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Intermittent energy source

A surge in wind turbines like these have helped Germany generate more than 25% of its electricity from renewable sources. Since Germany's electricity system is interconnected with most of the rest of western Europe, the overall percentage of this kind of

When the grid says ‘no’ to wind and solar power, this company’s technology helps it say ‘yes’ again

Environment

Too much renewable power? A German engineer comes up with a way to store excess renewable energy, take pressure off the grid and ease the way for the adoption of more wind and solar power in a country that’s already way ahead of most of the rest of us.

Solar power production has grown more than 25 times over the last decade in Germany, spurred largely by big incentives for small producers to get into the market. But sunshine and wind power are intermittent, so engineers and others are looking for ways t

How do you catch the sun to make electricity at night? This German inventor has an answer.

Environment
Wind turbine and solar panels

Someday, you may store your solar or wind power in a ‘rhubarb battery’ from Harvard

Environment
Wind turbine and solar panels

Someday, you may store your solar or wind power in a ‘rhubarb battery’ from Harvard

Environment

Energy challenges for post-nuclear Germany

Environment

Greening the grid

Environment

Getting solar and wind energy to where it’s needed could spark a power struggle over power lines.

The World

Hydro-power for Afghanistan

Environment

Anchor Lisa Mullins speaks with The World’s Laura Lynch about a U.S. project in southern Afghanistan that aims to deliver electric power to a million and a half people in the region.