Solar power has become cheaper than electricity from Nigeria's national grid for the first time, marking a turning point in ...

Rooftop solar is often marketed as a money-saving upgrade, but one homeowner says it's done the opposite. In a Reddit post in ...

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 ...