Think of solar greenhouse heaters as a way to supplement existing heating systems. They're out there, but some assembly may be required.

If you stop to think about it, it’s a marvel that we can harness energy from the sun. But we do, thanks to solar panels equipped with photovoltaic cells that convert sunlight to electricity. That’s no ...

If you've ever looked at your energy bills and thought, "Why am I paying all this money when there's literally free energy beaming down from the sky?", well, you've got a point. While solar panels ...

In a major leap for clean energy, scientists have figured out how to make solar panels that are lighter, more efficient, and — for the first time — durable enough for everyday use. A research team led ...

Scientists are learning how to turn the chill of outer space into a quiet source of electricity, using the night sky itself as a heat sink. By carefully managing how surfaces shed heat after dark, ...