El Salvador's growing energy demands will be met, in part, with 10 new solar energy plants that the U.S. is helping to finance.
The United States is supporting India with its ambitious clean energy program, including this solar rooftop project in partnership with Indian Railways.
Shocked by the lack of reliable electricity in some rural health clinics, Laura Stachel and her husband designed a portable solar electric system.
A small Indiana town has always relied on the sun to grow crops but now will count on it to power schools.
The San Francisco Bay island of Alcatraz, formerly a high-security prison, is now a tourist destination with its own renewable-energy system.
The worldwide mix of fuels used to generate electricity is shifting, with a greater reliance on renewable energy sources and natural gas.
A company in Washington trains young men and women to install solar panels in low-income communities at no cost to residents.
A year has passed since nearly 200 countries came together to adopt the historic Paris agreement on climate. Check out what has happened since then.
New solar technology could help provide cheap power to many of the 600 million people in Africa who currently lack access to reliable electricity.