Geothermal energy is used for electrical power production in 21 countries, and supplies significant amounts of electricity to countries such as the Philippines, where 27 percent of electricity derives from geothermal sources.

Geothermal energy is a mainstay of the Icelandic economy, and is also heavily exploited in the United States, with 43 geothermal plants. Geothermal energy is used for electric power generation and direct utilization in the United States.

Even so, this worldwide use represents only a fraction of the potential power that could be generated from geothermal resources. Geothermal energy is generally a highly localized resource, and the processes used to extract energy move at a much higher rate than the processes that restore energy into the geothermal environment.

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I just heard (for the first time) of algae oil, having power producing capabilities. I was watching the news Sunday morning, and saw a story about a guy named Glenn Kurtz in El Paso Tx.

He says that he can produce 100,000 gallons of fuel per acre per year. Compare that to corn at only 20 to 30 gallons of fuel per acre per year!

Moving our country towards corn for fuel is just plain stupid, and most rational people already know that corn is not the answer, but this sounds like it has real potential.

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Renewable energy is the term used to describe energy that comes from sources whose supplies are regenerative and virtually inexhaustible. They are either continuously resupplied by the sun or tap inexhaustible resources. Renewable energy is defined as an energy source that is naturally replaced by an on-going process at a rate greater than the rate of usage.

Renewable energy is naturally intermittent. Renewable energy is any sustainable energy source that comes from the natural environment. The most common forms of renewable energy are solar, wind, water or hydro, biomass and geothermal energy. Renewables have proved they can meet the energy needs of industrial and developing countries alike, and are offering real solutions to a world facing accelerating global energy demand and rising concerns about energy supplies and environmental impacts.

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Renewable energy is, by definition, energy generated from sources that cannot be depleted. Two well-known examples are wind and solar energy. Renewable energy is considered a very important part of the solution. Its share (including large hydro and biomass) in global primary energy is projected to be between 8% and 17% possibly increasing to above 61% in 2100.

Renewable energy is helping us bring about a new energy future, one that is cleaner, more sustainable, more affordable, more secure and less reliant on carbon-based fossil fuels. While there is no “silver bullet” that will solve the world’s energy problems, it is clear that renewable energy and efficiency technologies are an indispensable component of the solution.

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Alternative energy sources are usually substitutes for fossil resources such as oil, coal and gas. There are a variety of options, including solar, wind, geothermal, biofuels, hydrogen, and more .

Alternative energy sources are increasingly recognized as the only way to create sustainable energy to meet the world’s future needs. Investors have been some of the first people to recognize this and many big ones, including Bill Gates and Richard Branson are now backing alternative energy companies.

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