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PUERTOLLANO, Spain — Two years ago, this gritty mining city hosted a brief 21st-century gold rush. Long famous for coal, Puertollano discovered another energy source it had overlooked: the relentless, scorching sun.

Google’s Bill Weihl expresses his opinion, “We see a chance to make a difference in the field of renewable energy and energy information that can help bring the world to a lower carbon and more efficient economy.”

A subsidiary of oil giant Chevron Corp. plans to build what New Mexico officials say will be the largest solar power plant in the nation that uses lenses to focus sunlight onto solar cells.

Solar Millennium, the project development unit of Solar Trust of America, will use advanced dry-cooling technology for its two proposed solar thermal power plants being developed by the company in the Amargosa Valley outside Las Vegas.

Massive renewable energy projects undertaken by the UAE and other Middle Eastern countries could turn them into solar energy exporters.

Reuters reported that SHOWA SHELL SEKIYU K.K. plans to build a solar panel plant which will produce solar cells made of copper and indium.

In response to Robert Thorson's Nov. 19 column on alternate energy sources [Opinion, «Geothermal Can Be Earth-Shaking News"]: As a regular person, not the media or a celebrity, I know that photovoltaics produce electricity, not heat…

Scientists predict China will become one of the first countries to begin production of gas hydrates, an enormous untapped energy source.

The U.S. Energy Department will award $300 million to a clean cities program to help communities buy alternative fuel vehicles, Vice President Joe Biden and Energy Secretary Steven Chu said on Wednesday.

Some members of the business community here have found it rewarding to sell used cooking oil, which can be converted to renewable energy.

The jatropha tree seeds contain oil that can be blended with conventional gasoline or diesel to make 'biodiesel'.

An ambitious German-led project to supply Europe with solar energy from the deserts of North Africa will start with a meeting on July 13.