Renewable Energy Stocks

Mary asks…

renewable energy stocks that would be good investments?

list stock tickers

Windmill Farms answers:

Here is a directory listing to hopefully all renewable energy companies.

Http://www.renewableenergystocks.com/Companies/RenewableEnergy/Stock_List.asp

Which would be good investments? Probably none, because these institutions tend not to care about shareholder profits as much as suposedly saving the world. So these companies are willing to invest millions of dollars into supposedly more earth friendly sources of energy even if the cost of production is higher than other “evil” fossil fuel sources for the production of energy.

Although if traditional sources of energy become more costly to produce than the cost of alternative energy, they will have some market opprotunity. Hopefully they would use that opportunity to generate pofits for their shareholders.

Mark asks…

Most promising rising alternative/renewable energy stock?

I am looking to invest in renewable energy. Solar/wind/tide etc… i was wondering what some of the best options are out there that are going to be rising in the near future. Thanks!

Windmill Farms answers:

I know General Electric (GE) and Siemens (SI) are the biggest manufacturers of wind turbines in the United States.

Solar stocks didn’t perform well in 2008, but keep watching ASTI and TSL. Maybe you’ll be the first to buy them when they go up. TSL went up temporarily after inauguration day (1/30/2009).

Betty asks…

what are some good renewable energy stocks that have good dividends also they must be worth less than 35$?

also in your opinion any stocks that are under 35 dollars that you either want to buy have or are going to buy

Windmill Farms answers:

ESLR has a factory being built in Germany right now and has a lot of back orders, so they should do pretty good once the factory opens. For now they rely on there factory in Massachusetts.

I have done OK with FTEK.

XSNX is currently looking for a location in Oregon to build a factory for glass that collects energy from the sun. But I would be careful with them, I had this stock for about 2 years and it only went up a little and still no money comming in.

WWAT is the best renewable energy stock I have, started as a penny stock, now worth $1.30 as of this moment. Started off with a contract here and there but eventually got a lot of contracts in California and suddenly they were busy.

WWEI is a Canadian penny stock, it makes windfarms in China. This stock I would be careful with. It hasnt moved much but it does have SOME business. I’m not really that comfortable with it.

Lisa asks…

introduction of non conventional energy sources?

Windmill Farms answers:

Non conventional energy sources are renewable and have an unlimited stock.the increasing use of conventional sources is leading to its shortage so we should use non conventional sources such as solar energy, wind energy, tidal energy, nuclear energy, bio-gas, geothermal energy….so that conventional resources don’t get exhausted…

Hope i helped…

James asks…

What is Renewable and Non-Renewable energy?

What are some examples of each and any positives or negetives for both cases. Please and Thanks

Windmill Farms answers:

Renewable- something that can be replenished or doesn’t run out. Examples- solar and wind can’t run out. Biofuels from sugar cane or corn, we can plant more so they can be replenished. Possitives for wind and solar no emissions, no transportation costs, no country can control it, negatives- the are a new technology so they tend to be seen as expensive, many people don’t like the look of them, they can’t work everywhere and they aren’t constant. Solar only works during daylight and wind only when it’s blowing.

Non-renewable. These are things that are finite, and can’t be replenished. Coal, and oil are the 2 most common. Positives- we have an infastructure already in place. Negatives- pollution, damages the earth to aquire, the supply will run out, nations can control who gets the product, the price can be affected by the stock market, weather or political issues.

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Wind Energy Conversion System

Lisa asks…

What exactly is energy?

Windmill Farms answers:

Energy is the capacity of a system to do work. That system may be a jet, carrying hundreds of passengers across the ocean. A baby’s body, growing bone cells. A kite, rising on the wind. Or a wave of light crossing a space.

In moving or growing, each of these systems is doing work, and using energy. Every living organism does work, and needs energy from food or photosynthesis. Humans also create machines that do work for them, and that derive energy from fuels.

Some of the many forms that energy takes are:

* Mechanical energy, which includes

– Potential energy, stored in a system.

– Kinetic energy, from the movement of matter.

* Radiant or solar energy, which comes from the light and warmth of the sun.
* Thermal energy, associated with the heat of an object.
* Chemical energy, stored in the chemical bonds of molecules.
* Electrical energy, associated with the movement of electrons.
* Electromagnetic energy, associated with light waves (including radio waves, microwaves, x-rays, infrared waves).
* Mass (or nuclear) energy, found in the nuclear structure of atoms.

One form of energy can be converted to another form. This transfer is based on the law of conservation of energy—one of the laws of thermodynamics.

Humans converted energy from one form to another when they lit the first fire. By burning wood, they released the chemical energy stored in the bonds of the wood molecules, generating thermal energy, or heat. Other examples? A battery generates electrons from chemical reactions, which are used to make electrical energy. A toaster takes electrical energy and converts it to heat. Your leg converts the chemical energy stored in your muscles into kinetic energy when you pedal a bicycle.

Sound is a form of kinetic energy. Molecules of air are vibrated, causing them to move in wave patterns. When these waves hit the eardrum, they make it vibrate too. This vibration energy is turned into electrical energy impulses, which your brain interprets as sound.

Many times, multiple conversions are involved. Consider nuclear power generation. Atoms in the nuclear fuel are split, releasing their nuclear (mass) energy and creating thermal energy. This heat energy is, in turn, captured in the form of steam and used to drive a turbine generator, creating kinetic energy. And, finally, this kinetic energy spins a magnetic field around a conductor, causing a current to flow—creating electrical energy.

To measure energy, we use the “heating value” of the fuel, which indicates how much of a certain fuel is converted to how much heat. Common units of energy are the calorie and Btu.

- so basically there are different types of energy. :D hope I helped

Ken asks…

What is the difference between induction generator and DFIG?

What is the difference between induction generator and DFIG(Doubly Fed Induction Generator)

Windmill Farms answers:

Hey

Induction generators can be squirrel cage or wound rotor. In fact, a DFIG is actually a 3-phase wound rotor induction motor/generator. So why do we call it DFIG then? Its because of the difference in its use. When you use a WRIG with a 3-phase PWM back-to-back IGBT inverter in its rotor circuit, it becomes a DFIG. Theres a lot of details I can be providing here on DFIGs operation relating to Wind Energy Conversion Systems (WECS) but it would be better if you could do a simple google search and find those yourself. It would be more interesting! Try starting from this link:

http://classshares.student.usp.ac.fj/EN432/Research%20Papers/Muller%20doig%20wind%20syst.pdf

Its better than reading hardcore journals on DFIG. Start from here and keep reading.Hope this helps

Cheers

Maria asks…

Can we convert energy into matter?

Windmill Farms answers:

Yes, but it is complicated.

The conversion of sunlight into plants is not really conversion of energy into matter. It uses the sun’s energy to bring about chemical changes in the leaf of the plant. The actual energy of the light is not converted into mass – or at least only in the very loosest sense. Nor does a printer turn electricity into printed letters – it uses energy to do its printing.

If you wind up a ‘clockwork’ clock, the energy used to wind it and to make it go, appears as an increase of mass of the clock. However it does not contain any more atoms, or other particles. It is just that the energy itself has mass. In that sense it has been converted into ‘matter’. Of course the mass increase is so infinitesimally small (of the order of 0.000000000001 grams) that there is no possibility of ever detecting it.

So whenever you add energy to any system its mass increases, but in most cases by the tiniest and undetectable amount. One exception might be in nuclear/particle physics, where it is possible to see the production of ‘matter’, or particles which leave tracks in a bubble chamber, from the energy of a photon which does not leave a track. The source shows two such events.

John asks…

energy output is always more than energy input? True or False?

Windmill Farms answers:

Sadly false. The reason being is called the conversion factor, which is the loss, or inefficiency of the converter. For instance, if you ran a motor with an input of 1000 Watts, coupled it via a shaft to a generator, the output of that generator would be less than 1000 Watts because of mechanical losses of energy in revolving the shaft and losses by friction in the bearings. In a really good system it is unlikely that the output would be as much as 80% or in this case 800 Watts. Things are little different with electronic systems. For instance, a typical 12volt converter producing 240volts at its output will have losses in various components so yet again the output will be less wattage than input wattage. This loss will vary somewhat by careful choice of components and design. A bit long winded, but I hope it helps.

Laura asks…

How much time does it take to make wind energy?

Windmill Farms answers:

Thats a hard question, i dont think that there is a straight answer for that.

I’m pretty sure as long as you have a conversion system, you can use it right away. But the problem is harvesting enough wind and developing a conversion system that doesnt eat too much of the power to convert it.

The other problem is with animal rights groups protesting wind turbines because they are harmful for flying creatures. So they protest the turbines to save the flying animals instead of letting the technology go to save the human race (and our need for a little to no impact energy means).

Sorry, little rant, but still i’m pretty sure it is instantaneous as long as you have a conversion means.

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Wind Power Cost

Michael asks…

How much does wind power cost?

how much would it cost to set up a proper power unit?? i am trying to prove that wind power is bad (i dont actually believe that it is for my paper) but i need to prove that its costly. thankss

Windmill Farms answers:

Sug,
Playing the “devil’s advocate” on these types of issues can be difficult. But your questions is actually pretty straight-forward. If by “proper” you mean a huge commercial, mega-watt generating wind turbine power plant, then the costs for just the engineering and design phases are in the millions of dollars. Each individual unit has to be manufactured using heavy industry and the ancillary costs included in that. Parts have to be shipped to the location and assembled on site. The side costs here include, but aren’t limited to, purchase price of land, damage to private property from heavy equipment needed to set up the turbines, and the costs for the man power throughout the process, to include routine maintenance through the life of the turbine, then decommissioning costs after the turbine has reached its service life.
If you aren’t limited to striking against wind power all together, you may consider the positive position on smaller, residential-scaled wind turbine systems. Costs are lower all around, and there are even DIY kits available for those folks handy with a screwdriver and a wrench.

Hope this helps to answer your questions.

Donald asks…

How much does wind power and solar power cost?

In Australia how much would it cost to have a farm of wind power and solar power. If possible pls tell the cost of each thing individually. Also a sources where the information is found

Windmill Farms answers:

I know the cost of solar pannel .Each watt cost you only 4 U.S $. No maintenance cost.Life of Solar panel is more than 20 years.

Lisa asks…

what is the economic cost associated with Energy Resources: Wind power?

what is the economic cost associated with Energy Resources: Wind power?
what is the economic cost associated with Energy Resources: Wind power?
what is the economic cost associated with Energy Resources: Wind power?
what is the economic cost associated with Energy Resources: Wind power?

Windmill Farms answers:

The economic cost associated to green energy such as solar, wind, waves energy has great impact on individuals and nation .
Individual can reduce paying energy bills by using wind or soloar power for electricity or heatings and states can be not aliened to others usual energy ressources such as petrole or nuiclear, they are no more dependant for others countries and can also generate national energy without high cost and clean not altering environnement. You can by yourself build wind power network by yourself and reduce up to 65 % your energy bills; goto : http://www.windpowercost.org and get free courses there.

David asks…

how much does it cost to run a hydroelectric plant?

i need to write a report on power sources and i need to be able to write down how much Hydroelectric power and how much wind power cost to run?
answers as detailed as possible! <3

Windmill Farms answers:

You may need to research the regulatory filings with the Public Utilities Commission or equivalent and the US Federal 10k annual report or the annual report to shareholders for utilities that have significant power generation using the subject methods. There should be entries for cost of production by segment. These utilities need to be regulated generators rather than transmission and/or distributors. You may still be able to find this information in annual reports to shareholders for merchant type generators that sell the output on the open energy market. I would anticipate that the cost for hydro would be around 3 to 4 cents US per kilowatt hour, and for wind between 10 to 30 cents US per kilowatt hour depending on levels of government subsidies.

Robert asks…

How much does a coal power plant cost to build?

I need to compare each of the following prices of energy plants built, but most importantly need coal.
If you can put some input on these prices in the same energy units it would be helpful! Thanks!
- Nuclear
- Hydro
-Wind power
- solar power
- Geothermal

Windmill Farms answers:

It makes sense comparing not just the Capital Cost but the through life cost which includes :
- capital cost
- Fuel cost
- overhauling and maintenance cost
- decommissioning cost
all these actualized at the moment u make the comparison…
It makes sense to size the power plant not below 1000 Mw…
I guess a coal power plant has a through life cost worth 6 US $ per watt ; assuming that just as reference, the other can be expressed as percentage of it and this leads to :
- Hydro : 85% (but suitable places where locating them are very very few ; furthermore almost noone would happily live at the idea of having billion cubic feet of water over their head….)
- Nuclear : 160% with nowadays precautions
- Wind power : 250% (have u an idea about how many square kilometers are needed to install and run 200 wind turbines? Not to mention the power reduction when wind is not blowing as due)
- Solar power : 300% (have u an idea about how many square kilometers are needed to install and run 1000 Mw based on solar cells? Not to mention the power reduction when it is cloudy and the power lack at night)
- Geothermal : 80 % —-suitable location are exploited yet….unless u want pump down cold water on deep superhot rocks… But the risk of generating earthquakes is extremely high

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Does Wind Power Create Greenhouse Gases

Daniel asks…

What is cape wind?

It will help reduce global warming.

Windmill Farms answers:

Cape Wind is the name of a private development project proposed by Cape Wind Associates. The idea would be to build a wind farm, a vast array of giant wind turbines, that would cover some 24 square miles of the Horseshoe Shoal in Nantucket Sound, just off of Cape Cod.

If completed, the project would consist of 124 wind turbines each taller than the statue of liberty and might generate on average 170 megawatts of electrical energy with possible peak outputs as high as 420 megawatts; enough to provide 75% of the Cape Cod, Martha’s Vineyard, Nantucket area electrical consumption.

The problems surrounding this project, however, include the facts that the Nantucket sound is prized for its open and scenic view, is an important habitat for marine and coastal wildlife, and is near a local major shipping lane frequented by large oil tankers.

A great debate rages over the project with people concerned with reducing greenhouse gases and creating alternative, renewable energy sources on one hand, and, property owners, real estate developers, and wildlife conservationists on the other.

Current efforts to delay or stop the Cape Wind development include a defeated bill amendment proposed by Representative Don Young (R-AK), and proposed legislation by Senator Ted Stevens (R-AK) in conjunction with Senator Ted Kennedy (D-MA) that would give the govenor of Massachusetts the power to halt the project. It is of note that, although normally a promoter of alternative energy sources, Senator Kennedy’s family owns property on Nantucket Island that would be affected by the construction of the proposed wind farm.

At this time, under the 2005 Energy Bill, all off-shore energy projects, once the jurisdiction of the Army Corps of Engineers, have been transferred to the control of the Mineral Management Service causing a delay for Cape Wind’s start proposed to begin in 2007 with completion in 2009. Also, under the new legislation regulating the Coast Guard (see Section 419 of H.R. 889), the Coast Guard Commandant has final say over the location of off shore energy facilities such as Cape Wind, determining the safety of such locations in regards to the current shipping lanes.

Richard asks…

Help with solar power and wind power?

i need some information to go into a report about solar and wind energy and also links to some helpful diagrams and link.

Thanks alot!

Windmill Farms answers:

Solar energy—power from the sun—is free and inexhaustible. This vast, clean energy resource represents a viable alternative to the fossil fuels that currently pollute our air and water, threaten our public health, and contribute to global warming.

Solar Energy is a clean environmentally friendly source of power. Now is the time to take advantage of this abundant resource.
All the energy stored in Earth’s reserves of coal, oil, and natural gas is matched by the energy from just 20 days of sunshine.
In 40 minutes of daylight The SUN releases upon The Earth the amount of energy that is consumed by the entire population of the planet in ONE YEAR
Each day more solar energy falls to the Earth than the total amount of energy the planet’s 6 billion inhabitants would consume in 27 years.
Currently we harness about 1% of this energy

Wind energy is plentiful, renewable, widely distributed, clean, and reduces greenhouse gas emissions when it displaces fossil-fuel-derived electricity. The intermittency of wind seldom creates insurmountable problems when using wind power to supply a low proportion of total demand, but it presents extra costs when wind is to be used for a large fraction of demand.

Ruth asks…

Do people understand that alternative fuel sources aren’t so impractical?

To name a few:

Algae

Tidal/Wave

Wind

Solar

Geothermal

All these be more practical than Fossil Fuels and all could be adopted today if the Oil Companies would allow them.

Windmill Farms answers:

NO,
Dr. Isaac Berzin of MIT has thought of a way to use algae to clean power-plant exhaust. Rows of algae-filled tubes are bolted onto the exhaust stacks.

Wind is free and will not run out so the cost is in building the wind turbine.
Wind power generation does not create greenhouse gases.

Hulen, J. B., and Nielson, D. L., 1988, Hydrothemmal brecciation in the Jemez fault zone, Valles caldera, New Mexico

Status of the Los Alamos experiment to extract geothermal energy from hot dry rock
A. W. Laughlin1, R. A. Pettitt1, F. G. West1, A. C. Eddy1, J. P. Balagna1 and R. W. Charles1
1 University of California, Los Alamos Scientific Laboratory, Post Office Box 1663, Mail Stop 978, Los Alamos, New Mexico 87545

Jenny asks…

How does wind energy work? I know a little, but does anyone have a clearer idea?

I’ve tried some internet sites, but none of them have given me any real idea of how it works except “It turns the blades and generates electricity”

I am really interested in Wind energy, and how it works. Anyone have a somewhat clearer explanation for me? Thanks.

Windmill Farms answers:

Wind spins turbines which powers a generator. That’s the easy way to explain it. But if you want to know more in detail:

“Wind power is the conversion of wind energy into a useful form, such as electricity, using wind turbines. At the end of 2007, worldwide capacity of wind-powered generators was 94.1 gigawatts.[1] Although wind currently produces about 1% of world-wide electricity use,[2] it accounts for approximately 19% of electricity production in Denmark, 9% in Spain and Portugal, and 6% in Germany and the Republic of Ireland (2007 data). Globally, wind power generation increased more than fivefold between 2000 and 2007.[1]

Most wind power is generated in the form of electricity. Large scale wind farms are connected to electrical grids. Individual turbines can provide electricity to isolated locations. In windmills, wind energy is used directly as mechanical energy for pumping water or grinding grain.

Wind energy is plentiful, renewable, widely distributed, clean, and reduces greenhouse gas emissions when it displaces fossil-fuel-derived electricity. The intermittency of wind seldom creates problems when using wind power to supply a low proportion of total demand. Where wind is to be used for a moderate fraction of demand, additional costs for compensation of intermittency are considered to be modest.[3]”

http://en.wikipedia.org/wiki/Wind_power

Hope that helps you. :)

John asks…

how can we use hydrogen to power cars ?

Windmill Farms answers:

One current method, is called PEM, or proton exchange membrane fuel cells. How it works:

Hydrogen (H2) molecules are split by way of an anode, into protons and electrons. The membrane allows protons to pass through and blocks electrons. This creates an electric potential, as well as a direct current (DC) as collected electrons move around the membrane to the other side, to recombine with the H+ ions (protons) as well as O2 molecules, creating byproducts of water and heat. This DC could ideally power anything from a light bulb to propelling an automobile if the electricity were converted to mechanical energy (like in the electric motor portion of a hybrid automobile).

The difficulty comes in getting the hydrogen. While the byproduct of a hydrogen powered car is water and heat, which do not hurt the atmosphere, the creation of purified hydrogen, does require energy as well as gives off large amounts of CO2, a greenhouse gas. Some work is being done into looking into renewable energy sources to power the purification process (wind power, solar power, nuclear power, etc) as well as methods of “burying” the produced CO2 underground, so that it is not released into the atmosphere.

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Advantages Of Wind Power Articles

Carol asks…

Electric vehicles articles – help!?

I am writing here because I desperately need more material for my project – I am writing a thesis about Electrical Vehicles – shortly EV, and I am frustrated, because I don’t have enough of credible material. I am searching for articles or publications on internet for electrical vehicles ranging from amateur to professional reviews, if possible. I would like to find ones that are written by professionals and experts – how the EV are working, prospects for the EV now and in the future, evaluations of EV against the fuel vehicles and so on. I am on my wits’ end, because our local library has zero of the mentioned publications. So please, I would appreciate your help, as much as you can give it to me.

Thank you in advance, and I’m hoping to see many positive results there,

Dogsbody

Windmill Farms answers:

An electric vehicle (EV), also referred to as an electric drive vehicle, uses one or more electric motors or traction motors for propulsion. Three main types of electric vehicles exist, those that are directly powered from an external power station, those that are powered by stored electricity originally from an external power source, and those that are powered by an on-board electrical generator, such as an internal combustion engine (a hybrid electric vehicle) or a hydrogen fuel cell.[1] Electric vehicles include electric cars, electric trains, electric lorries, electric aeroplanes, electric boats, electric motorcycles and scooters and electric spacecraft.

Electric vehicles first came into existence in the mid-19th century, when electricity was among the preferred methods for motor vehicle propulsion, providing a level of comfort and ease of operation that could not be achieved by the gasoline cars of the time. The internal combustion engine (ICE) is the dominant propulsion method for motor vehicles but electric power has remained commonplace in other vehicle types, such as trains and smaller vehicles of all types.

During the last few decades, environmental impact of the petroleum-based transportation infrastructure, along with the peak oil, has led to renewed interest in an electric transportation infrastructure. Electric vehicles differ from fossil fuel-powered vehicles in that the electricity they consume can be generated from a wide range of sources, including fossil fuels, nuclear power, and renewable sources such as tidal power, solar power, and wind power or any combination of those. Currently, though, there are more than 400 coal power plants in the U.S. Alone.However it is generated, this energy is then transmitted to the vehicle through use of overhead lines, wireless energy transfer such as inductive charging, or a direct connection through an electrical cable. The electricity may then be stored on board the vehicle using a battery, flywheel, or super capacitors. Vehicles making use of engines working on the principle of combustion can usually only derive their energy from a single or a few sources, usually non-renewable fossil fuels. A key advantage of electric or hybrid electric vehicles is regenerative braking and suspension; their ability to recover energy normally lost during braking as electricity to be restored to the on-board battery.

Maria asks…

can this be sustainable wind power?

could this be used to generate electricity?

Just like the whirpool that forms behind a rock in a rushing river, wind flowing over a ridgeline tends to create a swirling eddy on the leeward side of the ridge. By whipping a glider through the eddy and then immediately looping back over the ridge, taking advantage of the shearing winds in the opposite direction, a sort of infinite loop of thrust can be tapped into.

http://www.popsci.com/military-aviation-amp-space/article/2009-06/worlds-fastest-rc-plane-hits-392mph-no-engine

Windmill Farms answers:

It’s been done and was featured in either Popular Science or Popular mechanics back in the 70′s. I’m not about to dig through years of back issues to find it. They’re called Tornado Vortex Tower for Omni Directional Winds. There are actually several kinds of confined and unconfined vortex concepts.

Thomas asks…

what are the real advantages of owning a mini computer?

who should buy a mini computer?

Windmill Farms answers:

The recent trend in mini computers is towards those powered by the Intel Atom processor. I will start by addressing those computers. There are other mini computers, powered by regular Intel and AMD processors, that are more fully featured and functioning than those powered by the Atom processor. I will address those later.
If you are referring to one of the new, small Atom powered netbook computers – like the ASUS Eee and MSI Wind – the advantages are portability and battery life. Netbook computers means no more lugging around full-size laptops, with their (comparatively) limited battery life. Instead, you can take one of these small, lite, energy-efficient netbooks. Checking email or the latest news in a coffee shop, and/or taking notes in a class or business meeting, is the milieu of the netbook.
If you are referring to one of the Atom powered mini desktop computers, the advantages are size and energy efficiency. You can fit them most places a regular computer is not practical. Having a mini computer in the kitchen makes more sense than a full size computer, or a laptop. Imagine accidentally dropping a glass of water in the kitchen. Would you rather it short of the keyboard of your mini-computer, or leak into your laptop and short the whole laptop out?
To address non-Atom powered mini computers, I will have to elaborate on energy efficiency. I’ve mentioned energy efficiency as being an advantage of both Atom powered mini computers I’ve discus so far. Using an Atom powered mini computer for the tasks I’ve specifically mentioned – checking email, surfing the web, taking notes – does make for a very energy efficient system. However, there are limitations and exclusions to the Atom’s energy efficiency claims.
I read an article (included below*) that compared a computer with an Intel Atom processor and one with a regular Intel Core 2 processor*. The article found that for most of the common benchmarks they tested (converting an audio CD to iTune’s AAC format, compressing a file with WinRAR, and other benchmarks) the Atom failed to completely live up to its claim of being energy efficient (please read the article for a more complete explanation).
Mini desktop computers powered by regular AMD and Intel processors have the same advantages of Atom powered processors, plus a few more. With the more powerful regular processors comes greater functionality. These computers can be used to edit video and images, do some lite gaming, and/or for use as a home theater personal computer (HTPC**).
Whew! Sorry about the ridiculously long answer for what seems like a simple question. I’m a fan of mini computers myself. I’ve pretty much stopped building full size computers altogether.
As to who should buy an Atom powered mini computer, I would say anyone who already has a regular laptop or PC. The Atom powered mini computer are excellent for their intended uses. At most other tasks, they are woefully inadequate. They would need a more powerful household laptop or PC as a companion for all the heavy lifting. Non-Atom powered mini-computer should be bought by anyone that has size, or limited space, as a major concern. HP’s Slimline models and Dell’s Studio Slim Desktop will serve most people well for almost all tasks they will need.
I hope this helps. If you need more information, please add more details to this question, or feel free to email me through my Yahoo! Answers profile.
Good luck.

David asks…

What is a power/energy auction?

The word came up here: http://www.renewableenergyworld.com/rea/news/article/2011/12/wind-makes-up-80-of-contracts-in-brazils-latest-power-auction

Windmill Farms answers:

Testing auction mechanisms experimentally in a controlled environment provides an inexpensive means for evaluating their relative merits. The first part of this paper focuses on the comparison three different auctions with regard to market efficiency and pricing, given scenarios with two, four, and six competitors. Though the uniform price last accepted offer auction was superior overall, the number of competitors proved to be a more significant factor in determining auction performance. Significant exploitation of market power was observed in the duopoly case. The second part of the paper focuses on a transmission network with six sellers in which network constraints give rise to market power opportunities. Experimental evidence based on tests with student and expert subjects show exploitation of this strategic advantage. Several other scenarios are described in which the transmission network creates market power.

Ken asks…

Wind turbines – what is practical and effective ?

Is it only small wind turbines that can practically be purchased in the UK and can be mounted on roofs? I would like to investigate the possibility of a very large company, with many buildings and very high energy bills, harnessing wind power. There is not enough land space for a free standing large turbine but plenty of roof space (I will also look into PV panels but would like to understand wind further first). It is quite an Urban are, but the company has one very tall building)
Thanks for any advice…..

Windmill Farms answers:

Here is an article that might answer your question from Ben Ford… He has been around for a while and is an experienced inventor and author on green energy .He showed me how cheap it is to build wind and solar… That will be me out there repairing my fence this summer and building solar and wind power!
Author Ben Ford
How would you react if your neighbor told you she was going to build wind turbines? Pretty impressed? The truth is that it is not difficult to build wind turbines and many homeowners are taking the challenge to build their own wind turbines as a cost-effective means to utilizing renewable energies. It isn’t exactly snap-your-fingers easy to build wind turbines either, but with the proper plans and a motivated builder you can be building wind turbines in no time.

It is definitely your best bet, before setting out to build wind turbines, to purchase an instruction manual or guide to follow. Remember that you get what you pay for when it comes to instructions. Make sure you find a manual that is easy to read with detailed instructions. There are also many online resources and forums to help guide you through your wind turbine building process.

To familiarize yourself with the basics, before you get started on your project to build wind turbines, there are four basic components to wind turbines. To build wind turbines you must be familiar with the towers, the batteries, the turbines and the tail and propeller assembly. The tools generally required to build wind turbines are simple as well, you will need wrenches, a saw and a drill. There may also be a need for additional tools depending on how of the wind turbine you will be building yourself.

One part that you will probably be ordering when you decide to build wind turbines is the motor. The motors on wind turbines do require regular maintenance and oiling for continued efficiency, but this is a small price to pay for the excellent energy these systems provide. In addition to the motor, you are definitely going to need a good-sized workspace. Depending on your target energy output, your propellers or blades could get up to 8 feet in diameter (4 ft blades).

It takes a little work to build wind turbines, but there is really nothing overly complicated about the process and generally the process can be fairly inexpensive once you are operational and your electric bills are dropping each month. Building wind turbines is also a fast growing occupation worldwide as technicians are tough to find. So learn how to build wind turbines for yourself and take advantage of the opportunities free electricity and know how can provide.

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