Dirt can cut solar output, but cleaning only pays off when the numbers make sense.

"Otherwise you give PG&E essentially free energy all day long then buy it back at full retail markup once the sun goes down." ...

California is the latest state to pass a law making it easier to install balcony-friendly solar panels. Renewable energy experts think the new technology is about to take off.

Homeowners in the Golden State have been able to get some relief by installing solar panels to defray their electric bill, ...

Manufacturers say they are close to perfecting a new, more efficient solar panel that could help the United States reclaim ...

Installing solar can significantly reduce your electric bills for decades to come. Here's what to know about buying vs.

Solar panels have been a renewable energy option for homeowners for decades. But technology advancements have made the best solar panels a reliable and cost-saving asset to many homeowners. When it ...

Free tools can help you estimate how much energy you'll get from a plug-in solar panel - and how long it'll take to earn your money back. But can you trust them?

New Jersey is now the ninth state to legalize balcony solar, as dozens more consider bills.

There's no question that solar power's a net boon for the environment, but it's not popular with everyone, though a future project could change that.

Phoenix gets plenty of sunshine, and solar panels can help you put it to good use. Go green and cut down on your power bills with the best installation companies in this Arizona city. Phoenix gets ...