A new study of more than 5,000 California home sales showed homes with solar panels sold for, "an eye-popping $39,500 to ...

If you rewind the clock fifteen or twenty years, residential solar energy was a tough sell. The systems were incredibly expensive, wildly inefficient, and—let’s be brutally honest—they were usually an ...

Two years ago, California slashed one of the best incentives for people to install new rooftop solar systems. Now regulators might cut the benefit retroactively, too. Before they do, they should ask ...

Free energy never gets old.