Wind Power For Homes

Carol asks…

How would you go about estimating demand for wind power?

I need help with finding a few articles that are credit able on how to go about estimating demand for wind power. Anyone help please?
Or if anyone knows how to? that would be great too!!! Thank you!!!

Windmill Farms answers:

There is no specific demand for any particular type of power. Consumers don’t call up their power company and say they want only wind power delivered to their home. They don’t have that choice.

It’s all mixed together in the power grid, wind, solar, coal, nuclear, etc. A power company that needs more power will look at the various alternatives, and how much money they have, and the time basis of the needed power, ie, off peak, peak, baseload, etc. And decide to spend that money for one type of power generator or another. Of course they take into account the good publicity they get by building wind turbines… Plus the difficulty in getting regulatory approval, buying the land, plus the opposition they may get for various types of power, plus the payoff time, plus the cost of fuel, maintenance, etc. Plus any grants from the various governments involved.


Thomas asks…

I want to write a research paper on renewable energy pertaining to solar and wind?

Do you have any ideas on what I could use for a thesis? I want to write something about how if people used solar and wind power, how much of a positive impact it could have on the earth. Any ideas?

Windmill Farms answers:

Hey Jacob, good project. I’m pasting an answer from an earlier question along with some explanation and sources for you. Sorry it’s so wordy, but your question is pretty open ended.

If you invest properly in solar or wind power today and take advantage of any grants and tax incentives, even if your electric rates do not go up as they are forecast too, you will get your money back over time, well within the lifetime of the equipment, and sooner if there is a rate increase in the future. There are also enviromental benefits. At one time there was an argument that a solar panel will never produce as much power as was used to manufacture it. First of all, this is not correct. The, “Embodied Energy,” in a solar panel is earned back in 2 – 6 years, depending on the type panel, where the raw materials were shipped from, and how it was installed and used in the end. Most panels are warrantied to last at least 25 years, and most last much longer than that. But the argument is not important anyway. We have been living with electricity for over a century now, so it isn’t going away anytime soon. The question is, “What is the best way to produce it?” If you build a panel, and put it along side a similar sized natural gas fired turbine generator for example, which earns back its embodied energy sooner? The answer is the gas turbine never does, because once you build it, ship it and install it, you now have to feed it natural gas for the rest of its life, so it keeps on digging itself a deeper and deeper embodied energy hole that it can never crawl out of. At least the panel has a chance to get even environmentally. So manufacturing and using solar panels in the end releases less pollution into our environment. The results are basically the same for wind turbines too. There are other environmental benefits as well, most of these are pretty obvious.

There are also mechanical and political benefits. We all know after the oil embargo of 1973, and the gulf war what it means for our country to rely on foreign oil. Wouldn’t it be nice if we only shipped in 20% of our energy instead of 60% the next time something like that happens? Our home has been powered by the wind and sun for years now, but we still remain connected to the electric grid. Last year alone there were two power failures in our county that lasted about a half day each. In both cases, we were not aware of them because our solar array kept on feeding the house. It’s difficult to put a price tag on something like that. Did you know that there are over 100,000 homes and businesses in the United States alone that use some level of solar power to operate their electrical devices, that’s good news.

Beyond the mechanical, political and environmental benefits however, lies a less obvious benefit, the social benefit. Right now we pump oil out of the ground, and mine for coal. The process of getting those materials to market involves shipping, military escorts and other activities that use up a good portion of that energy as well as putting lives at risk. Jobs in solar power are higher tech than jobs in coal mining, oil drilling and shipping, and there are more of them. Using more solar and wind power would require us to put more people to work, and increase our education base because the work involved requires certain skills. I would personally like to take all those people out of the coal mines, send them to school and put them to work building solar panels and wind turbines. Nobody would have to die again in one of those dark holes in the ground trying to find food for our hungry power plants. They could work on a factory floor where they would not be exposed to coal dust, radon and other toxins and dangers. Most of our solar and wind resources are spread pretty evenly over the middle half of our globe, so everyone has access. This puts people in Bogota on a more equal footing with people in Boca Raton by giving them access to electricity, heat and clean water, and the education to use the resources that provide those things. Oil, coal and natural gas is generally piled up in a few places, such as Russia and the Middle East. This gives those countries and the richer governments that rule them more horse power in bargaining for the other resources of our planet. These are the things that wars are made of.

There are other reasons, but I think you get the picture. For us, renewable energy has become something of a hobby It will probably never save us any real money, utility power in most places is really very inexpensive, but it’s a little like growing your own tomatoes. It’s usually cheaper to buy them at the grocery, but lots of people go to the work and expense to maintain a garden instead. We just grow electrons in ours. If you really want to learn more about the subject, there are some great sources to look into, I will list some below. Here are a couple of quotes you might be interested in: “The path we take today could ease anothers journey tomorro

Lizzie asks…

How to get a city the funding that will pay for a renewable energy grant package?

I own a buisness that converts home and industries to solar/wind power and I’m working on converting over a city streetlights, red lights and ball park to solar power. Where can I find a funding source that will pay the grant fee for the city?

Windmill Farms answers:

The best way to do this is to hire a grant writer, getting a grant is often a difficult process.
It not only take a lot of research to find who is giving grants for certain projects, but competing with others for the grants.
My wife and I looked into doing it, but it was too overwhelming for us at our age.

However these are some of the links that we looked into.


George asks…

About how much would a windmill cost to furnish power for my home?

I mean with everything I would need, the battery to store it and whatever else I would need? If anyone has one I would like to know how it works for you. Did it meet your expectations? Any problems that you have with generating your own wind power?

Windmill Farms answers:

Are you out on a farm or on a lot of land?… They won’t allow one in town or suburbs….


price there was $40,000 with a rebate of $20,000 from the gov. In California…..

Lots of other links there… DIY ones, too..

Linda asks…

What are the concerns of wind power? (visual pollution, health effects, etc)?

A few other questions on wind power, as i’m very interested in this subject …….
- How expensive is wind power? (the construction, expensive to run)
- Is wind power used anywhere else in the worl apart from Australia?
- How sustainable are the reserves of energy?
10 points us for grabs!!

Windmill Farms answers:

Hopefully I can shed some light on your questions…
What are the concerns of wind power?
– The largest concern with large, commercial wind turbines is noise pollution and what damages can occur when a catastrophic failure happens. For instance, in the US, several towns have already passed laws ot prevent the large turbines form being built within a certain radius of the town.

How expensive is wind power? (the construction, expensive to run)
– Bigger isn’t always better. The huge mega-watt size turbines can cost millions to build and even more to install. In Europe, the newest focus is on smaller, residential turbines that are less visually obtrusive, quieter and cause less damage if they fail structurally. Each smaller unit can provide power to an individual home, which is the whole point anyway. The smaller units are much more cost effective at only a couple of thousand Euro.

Is wind power used anywhere else in the world apart from Australia?
– Yes. Wind power is being used in large and small scale throughout the world.

How sustainable are the reserves of energy?
– Sustainability issues with wind power are basically the same as any other mechanical means of power production. Moving parts have a service life. As long as the sun shines and the earth rotates on its axis, we will have winds. If you mean storing the electricity produced by a wind turbine, we are limited by current battery technology.

Hopefully I have answered your questions.

Powered by Yahoo! Answers

Is Wind Power Green

Carol asks…

Explaining green chemistry?

I have to do a presentation to a group of half non-science students about green chemistry. I’m having trouble finding information that I can understand enough to simplify (I’m not that good at chemistry) and yet that’s informative. I just need to stand up and explain what green chemistry is and give a couple of examples for four minutes. I was thinking of using two real world examples and one or two examples from the lab. Does that sound alright?
Thank you :)
It’s sustainable chemistry. Hence the ‘green‘.

Windmill Farms answers:

Wow. Green Chemistry. That has to be plants, right?

Wind powered.

Donna asks…

Are we kidding ourselves about wind power?

Are you sitting around thinking wind power is part of our future? Maybe it’s time to think again. GE, Siemens, Vestas et. al. have raped European taxpayers and are doing the same in the United States. You just don’t hear about it.

“The voices of Kamaoa cry out their warning as a new batch of colonists, having looted the taxpayers of Spain, Portugal, and Greece, seeks to expand upon their multi-billion-dollar foothold half a world away on the shores of the distant Potomac River. European wind developers are fleeing the EU’s expiring wind subsidies, shuttering factories, laying off workers, and leaving billions of Euros of sovereign debt and a continent-wide financial crisis in their wake. But their game is not over. Already they are tapping a new vein of lucre from the taxpayers and ratepayers of the United States.”

From “Wind Energy’s Ghosts”:

Are wind farms financially sustainable on their own?

Should wind be permitted on the grid in places where winds are not strong or sustainable enough to support it? Can wind support the voltage level required for the grid to be stable? What happens when wind speeds are low, causing farms to act like capacitors and exposing the transmission system to failures? Is it even a viable base load source – and what quick response generators must be used when the wind dies down?

Before you get upset about this being some sort of ideological rant, please note that I have invested my own time, energy and some money into wind power, and attended Windpower 2009 in Chicago last year.

Windmill Farms answers:

As much as we are kidding ourselves about solar power in the north. Such as the $700,000 total green house they built in the Detroit area but couldn’t open because the solar panels didn’t get enough sun. Well gee….it’s not like Michigan weather has changed much …so you wonder why someone didn’t think that one through a bit more.

Maria asks…

Green power Questions!?

What isgreen power“?
Do you believe that we need to find alternate, environmentally friendly energy sources?
How many possible “green power” options did you find in your research?
What were the options you found?
Are any of these options being used today?
Which, if any, do you feel are viable energy sources for the future? Why?

Which, if any, do you feel are not viable energy sources for the future? Why?

Windmill Farms answers:

There is only one type of truly green power, and that is what has been energizing life on earth for 3.5 billion years: solar power.

Plants, algae and certain bacteria absorb solar energy and, through photosynthesis, turn it into food for themselves and for all the creatures which eat them. As creatures die, some of their energy gets recycled into new life while the carbon in their bodies gets stored away deep in the earth to keep it from disturbing the chemical balance of the atmosphere and oceans which controls earth’s temperature.

The reason that we’re facing the crisis of global warming today is because we’ve dug up that “ancient sunlight” in the form of fossil fuels and burned it, thereby releasing all that stored carbon into the atmosphere and oceans, changing the chemical balance and raising the earth’s temperature. So using these fuels may have been a terrible mistake.

For this reason, and because of all the other pollution and environmental damage that’s been caused by the use of such fuels, we have to return to using what life on earth has always used for energy: the sun.

We can harvest solar energy through photovoltaic panels, or solar water heaters or just by facing our houses toward the sun. OR we can harvest solar energy with wind turbines (the sun’s heat makes winds blow) or with hydropower or tidal power (the sun makes water turn to rain and fall into rivers and flow downhill, and the moon’s gravity makes the tides rise and fall). We can also use the geothermal energy from deep in the earth, which was left over from when our solar system was formed.

These are forms of green energy, but even those have to be used carefully, responsibly and conservatively so we don’t continue to do more damage to the ecology around us.

Helen asks…

I want to get a wind turbine to help power my house?

I’m only 16 now, but I plan on my home being as green as I can make it when I am old enough to even have a home. I want to know how much it costs to actually get a wind turbine, or make one, etc. How exactly I would hook it up to my house, how tall it has to be, how much space it needs, all that kind of stuff. Any additional information would be greatly appreciated. Anything else I need to know about wind turbines would be great! Thanks!

Windmill Farms answers:

Hey Chris, good for you getting involved in this. About 12 years ago we looked into wind and solar power for our home. We used to have frequent power outages and just wanted a reliable backup source. Well today our home is completely powered by the wind and sun, we heat with wood, solar and propane, heat water with solar and propane and collect rainwater.

When it comes to wind or solar power you have 2 questions to answer. First, how much are you trying to produce. You said, “help power my house?” In this case, any size you are comfortable purchasing and installing will help. If you want to run everything most of the time like we do, then you have some more math to do. The second question is, “Do I want a stand alone system that can operate without grid power, or just produce some power to dump into the grid.” This is important. We had a stand alone system for years, meaning if we produced too much for our home and our batteries were full, then the rest was wasted. But it also means if the grid power goes down, we still have power. Grid tied systems need the grid to operate, they use it like a battery. They are less expensive and simpler to install, but cannot operate if the utility company has an outage, they simply shut down. There is a third type system just coming out, a hybrid. It has a battery bank, but ties to the grid at the same time. If the grid fails, it will power your home until the battery runs down. If you have wind or sun, this might be all week. These systems are the most expensive to purchase and operate, and more complicated than the other two, and are less efficient because they use some power keeping the batteries charged all the time.

For most people that want to get started, I recommend they build up a small system first and experiment with it. We did 11 years ago, it had one small panel, a 50 watt size, 4 golf cart batteries, and a 300 watt wind turbine from Southwest Windpower that was designed for a boat. Everything cost us $1,100 USD, and everything except the turbine is still operating today. We use the 12 volt power for kitchen lights, small electronics, like cell phone chargers and flashlights, and a radio and fan. There is a great magazine called Home Power that gets into doing all these things, and it doesn’t cost much to subscribe. They even ran 2 articles on our home, one on our small system, and another on our full sized one several years later. If you subscribe, you can use their online search to look for those articles, search for, “Small System First.” There are also some great websites, I will list some below.

As far as building your own wind turbine, it can certainly be done, but look for instructions first. And shy away from the vertical axis types, they look really cool and people say they are better because they can take wind from any direction. Wind only blows one way at a time, and the horizontal units have no problem with this because of thier tail. The real reason is because the vertical units are horribly inefficient. Generally they convert about 5 to 8 % of the incoming wind to electricity, horizontals run closer to 30%, this is why all the power companies are using the horizontal types. Check out Mick Sagrillos article about them in the AWEA website to learn more. Do some more reading, and if you can, get to one of the energy fairs listed in the back of Home Power, we did 12 years ago, and that is how we got here today. Good luck Chris, and take care, Rudydoo

Sharon asks…

Do the economics of wind power justify the visual and sound damage to the environment ?

Windmill Farms answers:

The Economics of Wind power are none existent, they don’t make much noise ( I worked next to one for a few months) however I take it as a personal insult they were constructed as it is near Top Withens (Wuthering Heights to everyone) they do have some minor affect on Birds (who can’t always see the blades)

But they are the most inefficient way fo generating Electricity apart from having Guinea pigs running around a wheel that has been devised.

They are the Green idiots way of propounding how Green they are while trying to destroy a better life for the poor of the World. Communists (the Greens) hate the idea that the poor will get out of their poverty, so this is an ideal way for them, to waste money instead of investing in Clean Safe Nuclear.

No one has died from Fukishima, even when hit by a Quake over 100 times more severe than it was designed for.

Powered by Yahoo! Answers

Uses Of Wind Energy

Maria asks…

how is wind used to produce energy?

Windmill Farms answers:

All those answers are correct, maybe I can add a little more details. Just like the early windmills that were built well over 100 years ago, the wind turbines of today use blades that capture the energy in the wind. The blades are very similar to the wings on a plane and operate on the same principles. The faster the wind speed, the faster the wind turbine rotor assembly will turn (up to safe limits of course). This turns the shaft of a generator – very much the same way as a generator in any other kind of power plant. This in turn creates the electricity which is then transmitted back through the electrical grid and ultimately to homes.

It’s great to see questions about wind energy. I started working with this form of renewable energy 3 years ago after some time engineering more traditional power plants. Wind is the way to go for many reasons, I just hope we get more support and acceptance for it.

Sandra asks…

do the costs of wind energy technology make it prohibitive for common use? why or why not?

Windmill Farms answers:

You don’t use the term “electricity”, but rather “energy”, so then, I assume that you are not restricting it to electric generation (for which it only works with government changing the economics). If you meant to imply electric power, then, it cannot because of its erratic production, the land it requires, the materials use (a wind farm uses many times as much wire as a conventional nuke, hydro or fossil fuel plant because it is spread over 100s if not 1000s of hectares – and this adds to the amount of ore that has to be mined, and processed, etc.). And then it runs less than 40% of the time, so someone else has to put in a fossil fuel facility that has to be running, at least on stand-by all the time in order to provide the constant power for the level, or there have to be a lot of batteries (that use a lot of resources and have relatively short lives) to store the electricity for when the wind is either calm or too high. Kind of sucky, since it is unreliable and complex!

OTOH, Wind power has been in common use for centuries. Holland, Denmark and Spain have used windmills for a long time to pump water. They have been in use in the plains and other areas of the US, Canada, and Australia for at least 150 years to bring water to the surface for livestock and other uses. They run enough and are cheap enough to do the work needed.

Betty asks…

How would a town be affected, if they only used renewable energy sources (Wind turbines/solar pannels ect)?

How would an ordinary town be affected if they only used renewable energy sources such as wind turbines, solar panel’s, and (assuming they lived near the sea) tidal power?
Please help :)
also, how would a place like Amala, in India be affected?

Windmill Farms answers:

The great thing about tidal power in this situation is that it is predictable, you know when the tide is going out or coming in and so you can plan to distribute the energy.

A problem arises with Solar and Wind because they are intermittent and unpredictable. You may be generating lots of power when there is low demand and so it would be wasted and you may be generating very little during high demand so things would not work.

What this town would need would be to use some kind of energy storage which could store up the excess solar and wind and use it to react to demand.

A great way to do this and a very efficient way is to use pumped water storage. In this scenario a high mountain lake or resevoir is needed. The solar and wind power are connected to electric pumps which pump water up the mountain into the resevoir, when energy is needed the water is controlled through a turbine as it falls back down the mountain generating power and supplying it to the town.

In this way the town could probably function quote normally, but a lot of investment and a lot of land would required to be dedicated to generating the energy. For this reason it would be best to design a new town from the ground up and incorporate energy efficiency first and foremost, with generation capability designed into the buildings themselves.

Such towns do exist and are the subject of trials.

Hope that helps,

Colin Robinson

Laura asks…

How do the consumers use the wind energy source?

pls tell me how… we need it…. badly…. tnx and a source pls….

Windmill Farms answers:

How you use wind energy depends on
how much you are willing to pay for it.
You can purchase systems that only produce
electrical power (usually 12-24 volts) at a low cost.
The cost for such a system is around $650-$3000.
They dump the power as DC into 1-2 12v batteries.
I am building one of these to do the following:
(1) power my 12 volt outside lights
(2) power my 12 volt waterfall in the summer
(3) power a 12 volt heater in the winter.

If you are willing to pay more and you want to
generate power that you can resell to the electric co,
you will need more expensive equipment that puts
the power generated back onto the power grid.
That can run $3000-$100,000 for equipment of this type.

Michael asks…

how is wind used to make electric energy??

people say wind turbine, but what is that? please explain in a way that is simple enough to put as a sentence. Also, other than a turbine, is their any other way it is used to make electric energy?

Windmill Farms answers:

Ok. A wind turbine is basically an electric fan, but in reverse.

Wind spinds the large propeller. The large propeller is connected to a generator (“turbine”) similar to that on a bicycle. As the generator rotates, it generates electricity.

Rotational generation is the optimal when it comes to wind, because other methods of utilizing wind to generate power isn’t practical. In theory, one could use for instance wind pressure and tugs to generate electricity (think big kites, and using the tugging on the string to make electricity), but it just isn’t practical. Same goes for sails hooked up to, say, piezoelectric elements, but rotational generation is just superior in efficiency, cost per kWh generated, and so on.

Powered by Yahoo! Answers

Wind Energy Stocks

Donald asks…

Wanting to invest in an energy stock/ETF?

Trying to diversify my portfolio more. I really like ETF’s and individual stocks, but not sure where to start. Any advice / recommendations?

I will give out a best answer! :)

Windmill Farms answers:

Well, energy stocks have gone up quite a bit these last few months. You might be jumping in at the top. I am a fan of CVX because of its dividend, but not at these current prices. Do you have any GE in your portfolio. It is much more modestly priced and is a sort of an energy stock–wind turbines. Sort of out of favor with investors currently. A couple of more good earnings quarters though and that will change. I am not much of a fan of ETFs myself. Seems like you get the chaff with the wheat.

Joseph asks…

Looking fo a good energy stocks to purchase. Do you know of any …?

Wind turbines, etc.

Windmill Farms answers:

I’ve been hearing Chesapeake Energy being recommended by several investing magazines and websites. All of them are independent and not allowed to recommend companies they are currently invested in. The rationale is that the new presidency will promote clean energy and offer incentives to clean energy producers who can potentially reduce American dependency on foreign oil

Betty asks…

whats the best way to buy stocks?

which stocks look the best right now?

Windmill Farms answers:

Invest in A-Power Energy Generation System (APWR) stock is a great place to invest because the stock it blow 200 day average so in the short term(1month-1year) it will increase really fast when it in the market earning short_term (1month-1year) you will earn 1-2 time the amount that you put in which in and of you put in a long-term you return it will be 15-20 time which it 5-10 years. The company is the biggest owner of wind turbine in china and the company is expending to other area such as U.S, Europe, and many more countries. The companies is expend their wind turbine to many different area the stock average return a year is about 20% but with right now the we are on the way to getting out of recession the average return is about 50%-120% a year.

Sandy asks…

Stock advice?

Hey, I’m an active trader/investor.

Only knowledgeable, active, and successful traders please

I want you guys to share the following info with me:

1- Name me some economic sectors that you think will have a huge growth in the next 2-10+ years. I am already into Solar energy, so discard that one. preferably sectors that already have companies moving from a completely R&D stage to positive and exponentially growing earnings.

2 -Name me your stock pics for those said sectors, and if possible, provide a brief justification as to why you’re choosing that company over some other one in the same sector. You may want to provide URL’s to articles supporting that bet (preferably, no commercial newsletter stuff, cause they are paid to publicize certain secutirites, regardless of any intrinsic value.

3 – It’s been pointed to me that I should pay close attention to where sovereign weath funds are placing bets, and just follow the money. Any sites/sources?

Cheers and best wishes

Windmill Farms answers:

Alternative energy is going to be huge in the coming years! There’s a lot of ways to play this, solar stocks are just one way. Right now I prefer to get a more diversified approach, so I own GEX which is an alt. Energy ETF with stocks from solar, wind, geothermal, energy efficiency, and other sectors.

FTEK, which works in the cleaning up coal plants business, I think will also be huge. That could be considered alt. Energy.

Water and water infrastructure I believe will also have a lot of growth. I own some VE, which is more conservative, and am also looking to get into LAYN soon. There are water ETFs out there too, I believe PHO is one.

David asks…

What are the best stock to invest in for 2011?

Its 2011 and i was wondering what are the best stocks to invest into. I was told to invest energy alternative ones and foreign ones but i do not know which ones because im new to this. Can anybody help me with this or give me tips so i can do good because i know its a high risk with stocks

Windmill Farms answers:

Here some good stocks IMO from the energy sector like you said you were intrested, particulary alternative energy, namigly wind.

Mas Tec, Inc. (MTZ)
Owens Corning (OC) – many people only consider this co. To be a home builder but they are very much involved in glass composites that make up the wind dial
Illinois Tool Works (ITW)
Eaton (ETN)

Powered by Yahoo! Answers

Renewable Energy Definition

Sandy asks…

how is hydropower converted to renewable energy?

need websites and information

Windmill Farms answers:

Hydropower is by by definition renewable – it rains, fills up the reservoir thus renewing the source. There is a form of hydropower where the generators are used as motors and the turbines as pumps so that excess power from sister units or other power plants – nuclear in particular – is used during off peak hours to lift water from the outflow pool up to a large reservoir so it can flow back down during peak hours. One of the larger operations is near Niagara Falls, which can’t be shut off, where water is pumped up at night for use during the day.


Ruth asks…

Renewable Energy Stocks!?

Where can I find a credible data on how the renewable/green stocks have been doing? Finding info is easy but a credible source is a different story. I welcome any suggestions.


Windmill Farms answers:

Do you have a list of any specific stocks that are “green” stocks? For some solar power stocks and discussion about these stocks check out:

I did a Yahoo search of “Investing in Green Companies” and got the following results:

(Do your own research. I hope you find something good)

The Motley Fool Goes Green
With recycling and going-green costs skyrocketing in the ’90s, most … Expecting a decent return on their environmentally friendly investing practices. ……/04/18/the-motley-fool-goes-green.aspx – 63k – Cached

Investing in Green Companies – Cabot Heritage Corporation
Your source for stock market advice, investment newsletters and a free wealth advisory e-letter. … Investing in Green Companies: Don’t Think Internet—Think Green … – 52k – Cached

Green Investing
Green Investing – Definition of Green Investing on Investopedia – Investment activities that focus on companies or projects that are committed to the  … – Cached

Top 7 Rules for Investing in Green Funds
Green investments are booming as oil prices increase and investors look ahead, but the market is young and volatile. Here are seven rules for investing in green funds.… – 83k – Cached

Investing in Solar Companies
Green Chip editor Nick Hodge discusses a downturn in solar stocks despite a slew of recent good announcements. Conclusion: It’s time to buy solar. – Cached

Paul asks…

what is the difference between non-conventional and renewable energy?are they same?

Windmill Farms answers:

By definition, Non-conventional energy is energy that is renewable and ecologically safe, such as solar, tidal, wind, biomass, hydrogen, fuel cell power, etc.
The energy sources are exposed to use from modern technological advancements; rather than the normal use of conventional fuels as energy sources like gas or oil.

Renwable energy comes from non-ending resources.
Which makes them the same.

But if you are talking about nonconventional oil, thats another story.
Non-conventional oil is oil produced or extracted using techniques other than the traditional oil well method.
This is not renwable energy resource.

Mandy asks…

What is a reneable energy,and what does it do?

Windmill Farms answers:

“Renewable energy (sources) or RES capture their energy from existing flows of energy, from on-going natural processes, such as sunshine, wind, flowing water, biological processes, and geothermal heat flows. The most common definition is that renewable energy is from an energy resource that is replaced rapidly by a natural process such as power generated from the sun or from the wind.

Most renewable forms of energy, other than geothermal and tidal power, ultimately come from the sun. Some forms are stored solar energy such as rainfall and wind power which are considered short-term solar-energy storage, whereas the energy in biomass is accumulated over a period of months, as in straw, or through many years as in wood. Capturing renewable energy by plants, animals and humans does not permanently deplete the resource. Fossil fuels, while theoretically renewable on a very long time-scale, are exploited at rates that may deplete these resources in the near future (see: Hubbert peak).

Renewable energy resources may be used directly, or used to create other more convenient forms of energy. Examples of direct use are solar ovens, geothermal heating, and water- and windmills. Examples of indirect use which require energy harvesting are electricity generation through wind turbines or photovoltaic cells (PV cells), or production of fuels such as ethanol from biomass (see alcohol as a fuel). A parameter sometimes used in renewable energy is the tonne of oil equivalent (toe). This is equal to 10,000 Mcal or 41,868 MJ of energy.[1]

In a sense, renewable energy may be categorised as free energy, although most renewable energy sources would not normally be called “free energy”. In engineering, free energy means an energy source available directly from the greater environment and which cannot be expected to be depletable by humans. Renewable energy development is concerned with the use of renewable energy sources by humans. For aspects of renewable energy use in modern societies see Renewable energy development. Modern interest in renewable energy development is linked to concerns about exhaustion of fossil fuels and environmental, social and political risks of extensive use of fossil fuels and nuclear energy. For a general discussion, see future energy development”

Mary asks…

is electricity a renewable resource?

if it comes from electrons which are unlimited right?

Windmill Farms answers:

No. Electricity is not renewable resource, you need energy to get those electrons excited to create electricity. By definition, electricity is the movement of electrons. You can say electrons are recyclable but not renewable.

Powered by Yahoo! Answers

Wind Power Facts

Jenny asks…

What is it like having wind turbines on your land?

I am writing a paper on Wind Energy with the landowner’s perspective at hand. I just want to know how painful, if at all, the process was, and if you regret it and why? I’ve been researching, but I think an interview with someone who knows first hand would be the best source for my information. Thanks in advance!

Windmill Farms answers:

Hey Miranda, we’ve had 3 different wind turbines on our property over the last 12 years or so. The first was one I built, it ran for 4 minutes then disintegrated. The second was a small unit made for a sailboat. We tested it for 2 years and learned a great deal. It broke down a lot, and when it ran in windy conditions, it made a ton of noise. Turns out there is an inverse relationship between rotor diameter and noise. The bigger they are, the slower they turn, the quieter they are. Our third is a heavy unit, 1kilowatt, on a metal tower I hired someone to install.

The overall experience was basically positive, but we had some setbacks. Getting permits took time, but it all went pretty smoothly when I look back at it. In a nutshell, I would say having a wind turbine is like having a garden, you really don’t notice it until you get hungry, then you’re really glad you bothered. What started us on this mission was our power used to go out a lot. So our small sailboat turbine was combined with one small solar panel and some batteries to make 12 volt electricity to run lights and electronics when the power was off. Later, we liked it so much, we built a larger system with a 1.4 kw solar array, 1kw turbine, and a large battery bank. Now we use the utility company for our backup. The last 5 years or so our electric bill has averaged around $6 per month, and the power has not been out at our house for even a minute in almost 10 years now. Hard to put a price on that.

If you’re really trying to do some research, you might try looking into the more expert websites instead of asking hacks like me online for info. I’d be happy to talk to you about it, but there are some great non profit groups doing work in this area, and even one really good magazine, Home Power Magazine. We started reading it 12 years ago, went to some energy fairs listed in the magazine, and here we are. The staff at Home Power liked our small system so much as a way for a homeowner to break into the field that they featured it in an article. If you subscribe, you can look up the article in their search engine by searching for, “Small System First.” Now our home is even visited by the local 5th graders each year as part of their science program, they get to see a real live working solar/wind powered home after finishing the school work on the subject. Here is an interesting fact, did you know there are over 100,000 homes and businesses in the US alone that use some level of solar or wind power right now? That’s good news. There are some great books on the subject as well, I will list below.

After looking into all these sources, you might find yourself getting hooked on home grown energy like us. One word of warning, utlility power is pretty cheap in most parts of the world today, so going down the home grown path of enlightenment will not save you any real money. It’s a lot like people who grow their own tomatoes, it’s cheaper to buy them at the store, still, they go to the trouble and expense of maintaining a garden. They have to know about soil ph, watering and bugs. People who grow their own electrons have a similar curse, they become experts on where each electron in their house grows, but it can be therapuetic for some people, like us.

So do some more research, check out some sources, call some people and ask lots of questions. You might also take a few minutes and read some of my other answers by clicking on my avatar and scrolling down, it might give you a better idea how we think here. Good luck Miranda, and take care, Rudydoo

Nancy asks…

Do we realize that when we gear up to build the next generation of power plants we will be short of skills?

We are about to embark on a long overdue program of building the next generation of nuclear and coal power plants as well as solar and wind power systems.

The problem this poses is the fact that we don’t have enough of the next generation of skilled people in the trades that will be called upon to build and maintain this next layer of our infrastructure.

Conpetency in these skilled crafts isn’t achieved overnight!

Windmill Farms answers:

Next generation of power plants refer to your Nuclear power plants and Windmill as specified in your question. Be assured that there will be no shortage of skills and manpower in these fields as there many training institutes under various governments to impart skills to all those who come into this purview. I am afraid whether we are focussing much on solar power generation where we are even now finding difficult in sourcing right skills for the right job in solar energy

George asks…

How do you feel about Nuclear power plants as a source of energy?

I have yet to make up my mind on Nuclear Energy, I would just like to see how you feel about it. I know some facts, but I would like to gain more knowlege. Also what are your ideas on Cold Fission?
Also if you could give you age that would be helpful, by all means you do not have to. -Thank you for your time.

Windmill Farms answers:

The greatest technological challenge of the 21st century is to meet energy demand in an environmentally sustainable way. Nuclear energy is a carbon free energy; however, current fission technology leaves a deadly legacy – radioactive waste that is toxic for tens of thousands of years. To put the energy demands of humans in perspective with nuclear energy, please see the lecture by Nate Lewis (California Institute of Technology). In 2006, humans are consuming energy at a rate of about 14TW (14 trillion watts). Using current technology, in order to generate 10TW of energy, we would have to build a new reactor every single day for the next 50 years. This would be a monumental effort in stupidity and futility. Furthermore, this would not meet growing energy demand, which is predicted to be ~28TW in the year 2050. The clearest alternatives are wind energy and solar energy. Practically, wind energy used globally can potentially provide ~2TW energy, meaning that solar energy is going to be our primary energy source. The energy that strikes the Earth in 1 hour as sunlight is enough to provide humanity’s energy needs for 1 year (~14TW). However, this energy is diffuse, and we still need to develop low cost, efficient methods to convert solar energy to fuels and electricity. Research is progressing rapidly in this topic. The world needs to committ massive resources to this right now.

The second part of your question relates to cold fusion. Interestingly, fusion is the source of sunlight, so using solar energy, is in a way, using fusion energy (we don’t have to worry about the problems of containment and generating fusion pressures and temperatures). There are a few research projects around the world that are working on finding useful methods for controlling fusion reactions for energy. Perhaps the most well known involves a giant room with thousands of high energy lasers that are focused at a pelletized source of fusionable material. In this scheme, the energy input from the lasers initiates fusion. This technology is promising, but is far from being economical. Research efforts should continue.

Daniel asks…

What are the environmental facts you have to look out in order to create a tower in Dubai?

I’d like you to tell me what kind of environmental difficulties you would have to face in order to create a big tower or a building. Environmental facts may include weather (lightning, snow etc) , natural disasters (earthquakes, flood etc), how the ground is( if the ground is hard enough to bare the weight of the building), I would really appreciate if you could tell me the underground situation.

Windmill Farms answers:

Ask the people who built Burj Dubai. As with any building, you would need seismic zone, wind loads, lightning strikes – isoceraunic level, soil analysis, material availability, solar heating and lighting levels,
availability of power and water and utilities, waste disposal and sewerage connections, road access, parking, machinery and labour availability, finance, and whateverr else goes into a hugely expensive enterprise. Oh, and you would need to have customers for the place.

Donna asks…

If you had to argue the benefits of wind energy, what would they be? What are the risks?

What would be some arguments for the benefits of wind energy, what would they be? What are the risks?

Windmill Farms answers:

The main is that they are renewable and therefore will never run out. There also clean and clan be placed offshore with less maintenance than other power plants e.g. Less to run than coal plants.

The negatives of it is that they ‘look ugly’ (which i think is the stupidest reason ever) and that their noisy. The main reason i’d say against them is the fact that the power supply is very irregular and hard to predict and therefore could not be used on its own and would need other plants as well.

Powered by Yahoo! Answers

Vertical Wind Power Generators

Sharon asks…

How to create a generator with copper and a magnet.?

I’m trying to create electricity to power a small computer fan by spinning a neodymium magnet surrounded by copper wire. My problem is the fan, like many things, has a positive and negative lead and so if I hook up the power from the copper coil to the positive lead the where would I attach the negative lead so that It completes the circuit?

Windmill Farms answers:

Your wire has two ends, and depending on the orientation of your magnet relative to the loop, the direction you wound the loop, and the direction you spin the magnet, one wire will be positive, and one will be negative. The magnet needs to be oriented and spun so that the loop passes through the poles of the magnet. If the magnet poles and coil are lined up so that the poles don’t move in relation to the loop, you won’t generate any current (for example, the coil is laid on the horizontal plane, the magnetic poles are aligned vertically, and you rotate the magnet so that the poles stay vertical).

Charles asks…

What kind of alternative energy solutions are feasible in Portland?

So, I’m a college student in Portland, Oregon, and an ameture hobbyist that enjoys tinkering with electronics. I was thinking about starting an initiative on my campus to build more eco-friendly energy sources, but the campus is convered with really tall trees and gets small amounts of sunlight (it is Portland, after all). I think those two things rule out a wind turbine system or a solar panel system. Does anyone know of any alternative energy solutions that intelligent and driven students could build in a place like that?
Honestly, I don’t really care about the carbon footprint or how all alternative energy is supposedly just a gimmick that makes people think that they are doing something good when they aren’t. I don’t know enough about global warming to even know if it is a process that humans have a significant control over. The more I read about it, the less I know. That being said, I just want to have some energy that doesn’t spew smoke and won’t be used up. I’m more concerned with aesthetics and renewability than really saving the environment.

Windmill Farms answers:

As a college student in Portland, you should already know about this.


Vertical wind generators require less wind to operate, and less area to install.


James asks…

How would you calculate horsepower for a windmill without a generator?

I need to find horsepower for mini windmills for a science fair project, and so i need a formula.

Windmill Farms answers:

Horsepower (hp) is the name of several non-metric units of power. In scientific discourse, the term “horsepower” is rarely used because of its various definitions and the existence of an SI unit for power, the watt (W). However, use of the term “horsepower” persists as a legacy in many languages and industries, particularly in the automotive industry because of their continued advertising of maximum power output of internal-combustion engines in “horsepower” units of measurement.

There are two important factors to consider when evaluating the measurement of “horsepower”:

The various definitions of the “horsepower” unit itself
The various standards used in measuring the value of “horsepower”
These factors can be combined in unexpected ways — the power output for an engine rated at “100 horsepower” might not be what a reader expects. For this reason, various groups have attempted to standardize not only the definition of “horsepower” but the measurement of “horsepower.” In the interim, more confusion may surface. In contrast, the watt, defined by the International System of Units (“SI”), is not encumbered by varying definitions.

That said, if your intent is to physically test a mechanical windmill device for its horsepower capacity, you are testing mechanical horsepower. Obviously the wind speed will affect your outcome, I’ll let you do what you want with that. If you can attach a known weight to the windmill so that it will lift the weight a measurable vertical distance, and you have a reasonably accurate stop-watch, you can calculate the horsepower output of your windmill. One horsepower is defined as power equivalent of lifting 550 pounds a vertical distance of one foot in one second. So if you tied one end of a rope to a 550 pound weight, suspended the rope over a pulley, and tied the other end to a horse, and the horse was able to lift that weight one foot in one second, he would be capable of generating one horsepower. Or if a 220 pound man can run up a 5 foot (vertical) staircase in two seconds he is generating one horsepower.
Here’s the formula:
W = weight(pounds), D = distance(feet), T = time(seconds)
Horsepower = WD/(550T)

Ruth asks…

what are some science experiments involving wind tunnels?

Windmill Farms answers:

Wind tunnels have been used in a wide variety of projects including fundamental aerodynamics, aerodynamics of racing cars and road vehicles, rotorcraft aerodynamics, aeroacoustics, aeronautics, wind engineering and industrial aerodynamics.

Field Testing a Portable Wind Tunnel for Fine Dust Emissions

Wind erosion has been studied using both stationary and portable field wind tunnels. A portable field wind tunnel was developed in Lubbock, Texas for measuring sediment transport from a variety of surfaces and locations. A portable wind tunnel provides a unique opportunity to study wind erosion in natural field conditions. As field
measurements of dust emissions can be very expensive as well as unpredictable, generating aerosols using a laboratory dust generator has become accepted as a method for simulating such conditions. This study compares dust emissions measured on an agricultural field using a portable field wind tunnel with dust emissions measured
using a dust generator.

The field wind tunnel vertical slot sampler captured large sediment in a trap at the base of the sampler and pulled finer suspended material up through a tube onto large glass fiber filters. The air in the tube was sampled by a GRIMM analyzer which gave real-time measurements of dust concentration. Data was averaged over field wind tunnel runs and test plots within a site. Dust concentrations from the initial wind as the field wind tunnel was brought to speed were treated separately from the dust measured from the dust produced after introduction of the abrasion material.


Wind Tunnel Aeroacoustic Tests of Six Airfoils for Use on Small Wind Turbines

Aeroacoustic tests of seven airfoils were performed in an open jet anechoic wind tunnel. Six of the airfoils are candidates for use on small wind turbines operating at low Reynolds number. One airfoil was tested for comparison to benchmark data. Tests were conducted with and without boundary layer tripping. In some cases a turbulence grid was placed upstream in the test section to investigate inflow turbulence noise. An array of 48 microphones was used to locate noise sources and separate airfoil noise from extraneous tunnel noise. Trailing edge noise was dominant for all airfoils in clean tunnel flow. With the boundary layer untripped, several airfoils exhibited pure tones that disappeared after proper tripping was applied. In the presence of inflow turbulence, leading edge noise was dominant for all airfoils.
There are six different sources that independently generate airfoil acoustic emissions: inflow turbulence, turbulent boundary layer trailing edge interaction, separating flow, laminar boundary layer vortex shedding, trailing edge bluntness (von Karman) vortex shedding and tip vortex formation. These sources are superimposed to form the total noise spectrum from a wind turbine blade. The spectra are often summed to calculate an overall sound power level. (etc.)

Carol asks…

How do you connect wind turbine driven asynchronous motors to the grid?

I am looking to connect generic asynchronous motors (from washing machines, vacuum pumps, etc.) to vertical axis wind turbines. I need to know how to wire it so that I can sync these squirrel-cage induction machines to the electric grid by allowing me to plug them into an ordinary electric outlet in my home, 20-50 AMP. Since the generator is an induction device, if the grid goes down, then the generator should stop generating, which is what I want. By syncing to the grid I can avoid the cost of an inverter and not require batteries. This would allow to reduce my energy costs, and my net meter would register those savings.

There are companies that plan to sell such a device, including the turbine, generator and interconnection device for $400:

I would rather use by own home-built vertical axis wind turbines and spare asynchronous motors as generators, so I need to know how to wire them and what, if any, interconnection device is needed.

I have asked the local electric company to provide me information about any required protective device that would be needed for this type of generator setup. I know (thanks to a previous response to a question here at Yahoo) that there is a possibility that if the grid is down and the turbine continues to rotate, an induction generator can sustain an open circuit voltage provided there is no load – this is an unlikely situation, but it is something that my electric grid supplier will tell me about.

I know that induction machines such as these must be connected to a grid that can supply reactive power in order for them to function as generators. Exactly how they are connected I do not know.

I need to know how to wire the wind turbine driven asynchronous motor to the grid so that reactive power is applied to it. And I need to know if I need a special controller that would allow that asynchronous motor to function as a generator such that I can just plug it into an ordinary electric outlet in my home.

Windmill Farms answers:

I can mention a few points at least – it may not be a full set of instructions partly because your spec. Leaves a few questions open.

1. 20 to 50 A is too much for a normal wall outlet especially if it is single phase.

2. Are your generators (motors) single or 3 phase. You will need a corresponding connection.

3. You need to get the electricity supplier’s approval before connecting at least anywhere I ever heard about.

4.You’ll need a switch (1 or 3 phase, as the case may be) for the current and voltage of the generator. Overcurrent protection should be there anyway??

5. Wire the motor up through the switch and plug it in. When you switch on the machine will start as a motor. Wind blowing on the turbine will speed it up and start generating (power flow outward). Note that the motor, when run as a generator, will run slightly above synchronous speed (positive slip). If the wind dies down you will revert to motor operation which will drive the turbine and you could end up paying a lot to generate wind. You may therefore need a reverse power flow detection to disconnect when there’s not enough wind.

6. Next you need to be careful the turbine can’t run away when it gets windy (with the generator off-line for whatever reason) and overspeed your machine (you’ll damage it)

7. I’ll edit here if I think of anything more.

Powered by Yahoo! Answers

Is Wind Power Green Pros And Cons

Robert asks…

How much money would it cost to put solar panels at my school versus the cost of wind power at my school?

You see, I have to do a report on how to make my school more eco-friendly. I decided that they waste the most electricity so I am now trying to decide, which idea (solar panels or wind power) will cost less and save more for my school. I also want to switch the paper towels into hand dryers to cut waste of paper. Back to the solar panel/windpower. I am looking for a few things:
1) which will cost less money?
2) which will be more effective?
3) which will be more green?
4) Is it pratical?
5) pros and cons of each one
Anyway I need this info fast! I will give the 10 points to the person who gives me the best info and the most info the fastest. Thank you!
also, how many of each would i need to cover the electricity of the whole school?

Windmill Farms answers:

YOu can’t give a full answer ot the question without a whole lot more facts. The location of the building will tell you how effective solar panels will be. If it is in the far north, it will not be effective at all because for half the year, the sun is insufficient to power them. Wind power works only where there is consistent wind to run the turbines by turning the fans.

Solar energy has become less expensive because it is now mass produced and is built to be installed in a single facility. Most wind power is gathered in large collectives and the power is distributed through the power company. They are monstrously expensive to build because many of them are in locations that are difficult to get to like out in the ocean or on top of mountains though there are locations on flat land as well in windy areas.

You have to be where the sun shines more than not and where the wind blows more than not or you have to supplement it with purchased power.

Steven asks…

I need topic ideas for a term paper about wind energy…any ideas?

I am a second year university student that has to write an 8-10 page paper about wind energy and whether or not it isgreen.” However, I am drawing a complete blank about topics I can address in the paper. Any legitimate ideas would be greatly appreciated.

Windmill Farms answers:


I’ve included some pros and cons for you:


Good Private Potential: People can generate their own electricity with wind power in much the same manner as people do with solar panels (photovoltaics). Some companies specialize in residential installations and there are also several DIY wind power kits on the market. It is possible to save money in the long run with residential wind turbines. Then there’s the feeling of contributing towards fighting global warming on a more personal level.

Residential wind turbines open up for the possibility for people to become completely energy self-sufficient (often in combination with other solar power and geothermal heating and cooling systems). This means that you are not reliant on electricity from the utility grid, which protects you from blackouts and fluctuating energy prices.

Abundant: Although some places are better suited than others, harnessing wind energy can be done almost everywhere. However, whether or not a resource is financially viable, comes down to the following question: “Can we generate cost-competitive electricity with current technology in this particular area?” Offshore wind turbines expand exploitable resources even further, but then potential environmental impact to the ocean habitats need to be explored.

Prices are Decreasing: While still extremely expensive to produce on a large scale, rices have decreased significantly (as much as 60% since the 1980’s according to some sources). Technological advancements and higher demand is expected to continue to push the prices down even further.

Green Energy: Wind energy is a green energy source. Harnessing wind energy does not pollute the environment as fossil fuels, coal and nuclear energy does. Other than construction and installation, generating electricity with wind energy does not involve any emissions of climate gases whatsoever.

Renewable: Wind energy is a renewable source of energy. Wind is naturally occurring and there is no way we can empty the resources (it naturally comes back).


Costs: The cost-competitiveness of wind power is highly debatable. In most cases, projects rely heavily on government incentives to give wind power a fair chance to compete against already well established the power sources such as fossil fuels and coal. Wind generated power ranks second highest only to solar generated power in terms of initial and maintenance costs. Without government subsidies, large scale wind generated energy would be cost-prohibitive.

Noise Pollution: The wind turbines create a lot of noise. This alone is the reason that wind farms are not built near residential areas. People who live nearby often complain of huge noise that comes from wind turbines.

Threat to Wildlife: Due to large scale construction of wind turbines on remote location, it could be a threat to wild life nearby. Few studies have been done by wind turbines to determine the effect of wind turbines on birds and animals and the evidence is clear that animals see wind turbines as a threat to their life. Also, wind turbines require them to be dug deep into the earth which could have negative effect on underground habitats.

Wind Can Never Be Predicted: The main disadvantage of wind energy aside from cost/kwh is that wind can never be predicted. In areas where large amount of wind is needed or winds strength is too low to support wind turbine, there solar or geothermal energy could prove to be great alternatives. That is one of the reasons that most of the companies determine wind turbine layout, power curve, thrust curve, long term wind speed before deploying wind turbines.

Suited To Particular Regions: Wind turbine farms are suited to the coastal regions which receive wind throughout the year. So countries that do not have any coastal or hilly areas may not be able to take any advantage of wind power. The location of a wind power system is crucial, and one should determine the best possible location for wind turbine in order to capture as much wind as possible.

Visual Impact: Though many people believe that wind turbines actually look nice but majority of them disagree. People consider wind turbines to be undesirable to live next to. Petitions usually come before court before any proposed wind farm development.

Hope this helps!

Joseph asks…

The pro’s and con’s of running your vehicle on vegtable oil??

Do you think it is wrong to run on veg oil and not pay the duty?
Do the environmental benifits outweigh the crime?
Why doesnt the govenment promote green fuels?

Windmill Farms answers:

Since vegetable oil is not taxed as fuel it’s not wrong to use it. The politicians will be sure to tax it eventually and then it will be illegal to use it unless you pay taxes. Take advantage now.

There is no crime in using vegetable oil as fuel. It is environmentally neutral, as the CO2 from burning it is taken out of the air by the plants growing to produce more vegetable oil. There are some minor problems in using it in internal combustion engines [diesels], especially recently built ones.

Using waste cooking oil harms no ones food supply. Those who oppose using fuels made from crops, claiming to worry about competing with food crops are hypocrites. These people really want us to have no energy or to make it so expensive that our civilisation and population will shrink drastically. Their ideal is a totally vegetarian world, farmed by hand labour, using no animals. They propose using renewable and alternative energy sources which are insufficient at this time to replace fossil fuels and they campaign strenuously to end the use of fossils fuels and even fire. They propose extravagantly expensive solar power, but would oppose the huge collectors needed because some desert lizard might be disturbed. They push hydrogen power, which is impractical, but oppose the huge number of electric generating plants needed to make hydrogen. Electric power is made by burning fossil fuels, hydroelectric dams or nuclear plants, all of which they oppose. They oppose wind power because it is unsightly and kills birds. Tidal power plants would be unsightly and endanger some sea creatures.

They would have the great majority of the population die or never be born to protect the “Wilderness”. They call themselves “environmentalists”, but view themselves as the elite who will become the new population of the Earth.

The politicians think first of lining their pockets with money, they get money from Big Oil, Big Auto and Big Labour and green fuels would hurt all those groups. Government gets in the way with its regulations. Underground and earth-sheltered houses are deemed “basements” not eligible for loans although safer and very energy-efficient. Construction has to be “to code” and not better than code. Making your own ethanol for fuel is illegal. Many areas will not allow the digging needed for geothermal cooling and/or heating. Solar panels are not allowed on roofs because they don’t “fit in the appearance of the community”.

These people are also the ones who oppose the genetic engineering of plants, even if only used to make bio-fuels. They moan that growing any type of plant for fuel takes away from the food for the poor. These are the same poor that they want to abort their babies, the poor who are farming and herding and poaching the wilderness into extinction, the wilderness these people want to preserve untouched and unseen by Man. They are the ones who rail against foods tainted by anything, yet oppose irradiation that would eliminate all bacteria and germs from food . The same ones who demand perfect, unblemished produce, yet want to forbid insecticides and fertilisers. I can remember when white eggs got better prices than those “dirty” brown eggs, now those same people pay more for brown eggs thinking they are healthier and more natural. They are all just eggs!

The best alternative is to switch to a type of engine and power system that could use any liquid or gaseous fuel, would be less polluting than internal combustion engines and would be more efficient. They could be in production in 3 yrs and the autos would look no different than IC powered cars and would have as much interior space as any hybrid. E-mail and ask about steam-electric hybrids.

Betty asks…

Please Help with Green Research!!!!!!?

Ok so for Debate, I need to research this fake bill which states that all american homes need to be 50% energy self sufficient. To do this they need to build solar panels ect. What would be like 5 pros and 5 cons? Thanks so much for everyone who answers!!!!!!

Windmill Farms answers:

Not everyone is out of the woods.
There are many homes that are in the mountains and forest that receive little direct sunlight or sufficient wind to power much of anything.
If they all moved to parts of the country that get a lot of sun then they would also increase their energy use to cool their homes.

Paul asks…

Isn’t Nuclear energy a “Green Alternative” to petroleum? ?

Windmill Farms answers:

YES! Nuclear is the most “Green” energy choice for most locations. Here are some Pos and Cons:
!. Fission is the most energy for the least fuel with current technology.
2. Less fuel means less waste, and the waste is all accounted for, not released into the atmosphere to become someone else’s problem.
3. Uranium is readily available, very common in the earth’s crust (about the same as tin)
4. Economical – operating cost about the same as coal, fuel cost is a much smaller percentage of the total, therefore less susceptible to price fluctuations.
5. Reliable – Nuclear power plants have very high capacity factors.
6. No combustion, no Co, CO2 or SO2 released.
7. Creates jobs.
8. Reduce dependence on foreign oil/ fuel. Uranium available domestically and in oceans.
9. High temperature reactors could produce Hydrogen as well as electricity.
10. Fantastic safety record.

1. Irrational fear of all things nuclear.
2. High cost to build and license, large initial investment for long term pay back.
3. Publicly accepted high level storage facility not domestically available.
4. Reprocessing facility not domestically available.
4. High cost of personnel.
5. Security concerns,
Nuclear power, I believe is the best, safest, most reliable, current technology to provide energy. The plants operating now are safe and the new designs are even safer.
Building 100′s of new nuclear power plants would improve the economy, reduce or eliminate dependence on foreign oil, create jobs, reduce pollution, and provide for future technological advancement.
I have been working with nuclear power for about 30 years, I would be glad to have a Nuclear power plant or high level waste disposal facility in my backyard. My family and I live in a home within 10 miles of a nuclear power plant. (where I work) I have a great understanding of the risks involved and am completely comfortable with a plant “in my backyard”.
Using Chernobyl as a reason not to build is like saying because of the Hindenburg I will never fly in a commercial airliner.
Nuclear power has the smallest environmental impact of any current energy production method per unit of energy produced. One fuel pellet about the size of a pencil eraser produces the same energy as about 1 ton of coal, and if reprocessed 2/3 of what’s left can be reclaimed. Nuclear power is our best option for reliable, environmentally friendly, base-load electrical power.
Hydro: Only viable in specific locations, dams change the local environment significantly and are dangerous.
Wind: Only a specific range of wind speed is currently efficient for producing power, takes huge amounts of land space, unreliable for base load power – needs a backup anyway.
Solar: Only viable when the sun is out, toxic chemicals in photo-cells and batteries. Takes huge amount of space per Mw.

Powered by Yahoo! Answers

Uses Of Wind Energy In Points

Susan asks…

Help me….plz….Energy?

Topic: Sources of energy
I’ll have a presentation on this topic (in my English class_I’m Vietnamese and I’m not too good at english)
What should I do? What can I talk about?
My friends don’t seem to interested in this topic. So wat can I do to attract them?
Help me plz

Windmill Farms answers:

I hope this helps

There are many types of energy to use. One option, is to focus specifically on one type of energy, like solar power or wind power. Give all the facts about the energy you chose, the good and the bad. Or, you could compare and contrast the main types of energy. You could do solar, wind, water, geothermal, and gas (there are others, but I can’t remember them). You could do different car-fuels, or different ways to become more economical, a.k.a green.

To present them, I would use Microsoft PowerPoint (ask your friends for help with this, if you need to). A PowerPoint is only a guide: if gives you different slides, but you shouldn’t put exactly what you’re going to say. PowerPoint slides have a few bullets, which you put the main ideas on, and possibly a picture or two (again, your friends can help). The biggest mistake people make is that they read off of their PowerPoint; that’s not what its designed for. It’s really designed to just highlight on important information and the presenter (which is you) is supposed to elaborate, or give more information, on the topic.

As for making it interesting, take some of their hobbies. Does one of your friends like playing video games or computers? Show how the different types of energy can create electricity (but try to keep that short and use words and phrases people can understand. BIG POINT: if people can’t understand what you’re saying, your presentation is pointless; make sure you don’t bombard them with too much information. Speak as if your audience knows nothing of which you are talking about). Or use something that everyone uses everyday. If you want to get people interested so that they’ll listen, you have to say something funny or interesting; maybe even make it a little personal, like the hobbies.

I know this is a lot of information. I really hope this helps!

James asks…

What is the most accessible and use able alternative energy?

I need someone who acually knows what there talking aboout here so please cite your source and if your source is yourself please cite your credintials. What is an alternative fuel source that we acually can use thats not too expensive will acually work and is readily avilable?

Windmill Farms answers:

One of our research associate’s brother is an enviornmental consultant. We asked him to help answer your question:

First, he points out that the best alternative energy source is conservation: to use less energy.

Americans represent 4% of the world’s population but use 25% if the world’s energy. Each of us need to learn how to use it more efficiently. Using less energy has the added benefits of saving us money and reducing our dependence on foreign sources of oil and gas. Here are other options:

2 ) Wind Energy

Wind is currently the best alternative source of new energy. A number of utilities in the US have completed long term power supply forecasts and were surprised to find that a kilowatt hour or wind power will be cheaper than a new coal plant on a long term basis. This was because with wind, the fuel cost is zero and there will be no carbon cost in the future as there will be with coal. The new windmills are running up to 50% capacity and are available over 95% of the time.

Power cost in the US with the current fleet of plants in the US is as follows: coal is the cheapest, then nuclear, wind, hydro electric, bio fuels, natural gas, oil and solar is the most expensive.

3) Solar

Solar currently is the most expensive power on a bulk basis. Solar is cost effective in remote locations where the cost of running power lines is high. For example, solar battery street lights are cheaper in many locations due to the cost of running wires along the highway.

4) Bio fuels

There is a lot of development going on in bio fuels. These differ from fossil fuels in that the fuel is grown and harvested rather than taken from the ground (coal, oil natural gas). The current boom in Ethanol started as it was added to gasoline in order to reduce the air pollution from cars. Ethanol replaced a toxic additive MTBE which was previously used. MTBE is a carcinogen and leaks out of tanks into the ground water. Ethanol is far safer to use and has been a real benefit for the farmers in the US. There are problems with many bio fuels however. It takes about 5 gallons of water to make one gallon of Ethanol and a typical 100 million gallon per year ethanol plant will use 500 gallons per minute of water. In a year, the plant will use 500 million gallons of water – it would empty a lake one mile in diameter that is 25 feet deep.

Corn-based ethanol also takes a lot of fertilizer in the process. In the future, the new cellulose/ grass based ethanols will be far better for the environment. Because of the limitations, ethanol will only supply a portion (up to 20%) of the fuel supply for the US.

A number of large US utilities, have stated that they are not going to build any new coal plants and that they will get new energy supplies from wind, hydro and renewables.

Our resource is an electrical enginer and consultant in the energy industry who has been a plant manager at two large coal power plants and was director of environmental affairs for a large utility.

If you are interested in alternative powertrains, fuels, and articles, auto reviews, previews, photos, videos and quality ratings, please visit

Chris asks…

wind energy articles?

I have a report about wind energy importance.. and I need to find some sources for my report..
I’m not looking for science point view articles.. just it’s importance and it’s contribution to make the world more greener.. and some examples of country using this technology to generate energy..

if you have valuable articles please post a link.. thanks in advance

Windmill Farms answers:

For a balanced report, you should include the downside of wind energy development. A project planned for the little island of L?na‘i could consume – and irrevocably alter – up to 22,000 acres, or ¼ of the island. Each tower will be over 410 feet high – over 2 ½ times higher than the tallest tree on L?na‘i. They plan to lay an underwater cable to O’ahu through an important marine sanctuary. Please view the Friends of L?na‘i website

David asks…

How does wind energy work?

Can anyone please tell me how wind energy works as simple as possible. I need to do a power point presentation on wind energy so yeah… It would also be great if someone could tell me the advantages and disadvantages of wind energy (again, as simple as possible, please). Thanks soooooo much!

Windmill Farms answers:

Basically, it takes kinetic energy from the wind (that is the wind moving) and uses it to turn a fan.

The fan that is turning is connected to an electric generator, with the sind-driven fan supplying the energy. Thus, it creates electricity.

It is good because it doesn’t burn any fuels, and doesn’t harm the environment at all.

It is bad because it doesn’t produce a sufficient amount of energy to sustain…well hardly anything.

Sharon asks…

Wind power quesitons. [10 points~]?

Just answer whatever you know. Thanks in advance!

-What can this wind power be used for?

How is this type of energy easily renewed?

What is the cost of using wind power?

What are the positive and negative aspects of using wind power?

What is the science behind wind power?

How is wind power gathered?

How is wind power stored for later use?

Wat are waste by-products of wind power?

Currently, what is keeping wind power from widespread use?

When is wind power expected to be easily accessible to the public?

Windmill Farms answers:

It creates electricity, so whatever that is used for…

The wind blows, and you get more of it. Maintain the machinery, and you get more as long as the wind blows…so as long as there is weather, you can have wind power.

The land for the windmills, power lines, the costs of the towers and blades, and the turbines/magnets to convert the turning motion into electricity all have costs.

No greenhouse affects from generation of the power…the windmills are a bit unsightly, and take up room.

The science is electricity generation by spinning copper wire inside magnetic fields and generation of electrical current, then storing or transmitting it.


Batteries or by transmitting it to places using it.

Some land goes out of production for food; not much, but each mill needs a base, an access road for maintenance and the right of way for the power lines. There are probably other waste products of making the machinery and windmills…

The claim is that transmission lines are not in the right places or big enough to carry the power, but the fact is use is widespread with many wind farms in Texas and Iowa. Over 100 mills were recently built in Iowa generating over 1000 megawatts. Cheap coal is also a factor.

Powered by Yahoo! Answers

Wind Energy Pros And Cons

Mary asks…

Pumped Storage energy usage Pros and Cons?

Please in as much detail as possible, can anybody justify the usage of pumped storage energy to supply the nations electrical needs as opposed to wind power and coal power usage?

Windmill Farms answers:

It sounds like you’re asking about potential energy that would transfer to kinetic energy when needed. If so, as an example to amass the potential energy of water would require either installation of a barrier to a natural site (i.e., install a dam to form a reservoir) or in your case a mechanical pump to fill a water tower. When the dam is opened or the valves on the water tower are opened, the potential energy of the water becomes kinetic energy. If there were generators in the flow path of water released from the reservoir or the water tower, you could produce electricity.

Of the two examples above, the only real energy producer would be the reservoir as it is containing the energy of the water without external input of energy (i.e., a pump). The energy produced by the reservoir would be relatively ‘free’. With the water tower, the energy to pump the water up into the tower would nearly equal the energy released from the tower.

One solution could be to combine the two, such as: have a reservoir at a higher elevation than the water tower, fill the tower using the reservoir water. The water in the reservoir (higher potential energy) at the higher elevation would flow down to the lower point and the potential energy could be stored in the tower. With generators on both the water tower and the reservoir, energy could be produced without external energy input.

With that said, coal will probably still be less expensive in the long run. Reservoirs require massive amounts of permitting in addition to the cost of construction. You would need numerous water towers, etc. Additionally, the visual blight of water towers would nearly equal that of wind power generators (windmills).

Alternatively, for the U.S. There is already a compressed, clean fuel that can be used for electrical production, transportation, heating, cooking, etc… Natural Gas.

Mark asks…

What are the pros and cons of having new energy sources?

i am doing a research paper for english on if we should have new energy sources or not. and if so what new energy sources are there.
and i need both sides of my argument.
please put down your information and then leave a URL where i can read more or put it on my works cited page
thanks a bunch

Windmill Farms answers:

Solar Energy – Our sun is the greatest source of energy we know about it today, it comes to us freely and is efficient. It is very possible that solar power can replace traditional electricity sources in many places, especially where there is abundant sunshine. Unfortunately not all places are ideal for solar power. In the areas at high latitude there is not enough sunlight in a day to produce efficient energy, and the same for places where it rains a lot.

Wind Energy – Wind is very efficient at producing electricity. Obviously you need a lot of wind, like along coast lines and at high altitudes. Wind power could replace up to 20% of our total electric consumption in the foreseeable future. Wind is a clean source of energy with none of the harmful byproducts like carbon dioxide. However the huge blades of the windmills do pose a danger to birds and you need a lot of room to build a sufficient number of windmills.

Hydroelectric Energy – This type of power is mainly sourced from dams. The production of electricity from the water movement is clean and it does not produce waste material. However, the ideal type of places to build this is very limited and it is very expensive to build the dams.

Tidal Energy – Tidal energy work much in the same way as hydroelectric energy, but on a smaller scale, and it uses the natural tides of the ocean. There are several drawbacks though. Because of the sometimes violent and unpredictable nature of the ocean, they can not be constructed in many places. So far only about 9 places have been identified to build this kind of power plants. And these power plants can have a negative impact on migratory birds and also fisheries.

Sandy asks…

Wind Energy in Hawaii?

Residents of Hawaii, please specify any organizations that are for or against wind energy in Hawaii that you may support and if you are for or against wind turbines and why?

There are both pros and cons to wind energy, what is your take on it?

Windmill Farms answers:

I think Greenpeace and the Hookielau Division of the Sierra Club are against wind energy in Hawaii. The Imperial Japanese Navy ( IJN) was the navy of the Empire of Japan from 1869 until 1947, when it was dissolved following Japan’s constitutional renunciation of the use of force as a means of settling international and environmental disputes. Only the IJN was in favor of wind energy in Hawaii.

I think Hawaii would look silly with wind turbines all over the place.

Linda asks…

Free energy pro’s & con’s?

nikola tesla made it.for some reason we still dont have it im sure more people have been close or mabe they took the money.what happens when it finaly does happen & they dont take the money & it is avil. To eveyone would that be more bad than good?

Windmill Farms answers:

Most people lack a physics and electronics background to truly understand what Tesla was attempting, which ran afoul of his benefacotrs ideals-but at the same time Tesla was ignorant of the health impacts of the research he was doing.

The Tesla coils and Van de Graaf generators you have seen are small, the idea Tesla had was covering the globe with those coils in a very large form- the health issues have little to do with the electricity itself per se, but rather the health effects of RF energy, which is the root of his device’s principle. Most health effects were not recognized until after his death.

Even Tesla’s technologies required energy inputs of great quantity- so to say it was creating eenrgy from nothing is false.

This not to say there is not energy in the atmosphere. The earth is in many ways it’s own electrostatic generator sitting in vast gravitational pool of solar wind energies that are comprised predominantly of electrons.

You can generate potential energy with antennas if they are high enough and long enough. Snow, dust, and just the wind itself can generate significant electrical charges in antenna towers. This is also not counting the lost RF energies from a multitude of sources. Put a large diameter coil of wire on an oscilliscope with a signal diode and you can see visually a significant amount of wasted RF in urban settings.

Many a scam use Tesla’s name in vain. You can light up a flourescent tube with RF energy, go find a high tension AC power line, stand under it with your flourestent tube, and then rub the tube a little bit with a silk cloth to develop an initial charge. Often that trick is used to attract “investors” in a “new development…”

You are already using a number of Tesla’s inventions, so it is not a matter of anything being supressed. AC power distribution and flourescent lighting are Tesla’s doing. Edison was strictly incandescent and DC Power.

Don’t expect any new “Tesla” discoveries. If you study up on electronics and physics, so you can better understand the principles invovled, you can drop the rose colored glasses and apply yourself to maybe finding some truly new technologies. Or adapting things around you. Go take a look on Youtube, search for wind belt or wind ribbon- those did not exist even 5 years ago. You might not think much of them, but in a windy area in the third world, you have just lit up someone’s house with limitless hours of light.

Donna asks…

Renewable energies: what are the pros and cons?

Windmill Farms answers:

Pros: In theory, we don’t run out of the “fuel” or energy source, and they sound appealing and they are all the rage from a public image and political standpoint.

Cons are considerable, and often things that don’t get discussed. Many that have been used for centuries are no longer acceptable and so not publicized or considered truly “renewable”. An example: hydro power (hydro-electric, hydro-mechanical).

Others that have been demonstrated and even used for decades are politically unpopular, such as nuclear from “breeder reactors” or thorium 233, or fish and whale oil (lamps).

Some have been in use literally forever, and always will be, but their large-scale practicality or dependability is limited, so their near and medium term future is only a pipedream (wind, solar, tidal). Naturally occurring, crop-based oils (cotton-seed, olive, fish, etc.) are limited in the production capability, and increased scale reduces food availability. Ethanol (if from grains, only a small positive energy balance, if from sugar or similar, “jungle” and rainforest may be lost); etc.

Some may have great hope in the future, such as oils and fuels from genetically modified algaes or enzymes. But these are decades to even centuries out, and anything “genetically modified” has a bad name.

Often proponents don’t look at the big picture (such as the huge additional mass of copper or aluminum wire that is used to put in a “wind farm” over what it takes for a similar capacity coal boiler). Or the potential health hazards of manufacture of silicon wafers for solar electric panels.

But, much of what we are used to using is in limited supply. It is a shame to use natural gas for making electricity, when it is such a versatile and useful raw material for manufacturing chemicals and for portable and small scale direct energy. Petroleum is an enormously valuable raw material for making plastics and other chemicals we need and use everyday.

Coal, nuclear, and water availability is centuries long, and the 5-10% we can get from wind, solar, tidal and geothermal all need to be used as much as is practical and economical.

Powered by Yahoo! Answers