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.

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