Forbes contributors publish independent expert analyses and insights. Dianne Plummer is an Energy Consultant and Certified Energy Manager. Rooftop solar has become one of the fastest-growing clean ...

"I wish my electricity was that cheap." Arizona homeowner reveals how quickly his solar panel system paid for itself: 'To be honest I ... think it's kind of weird' first appeared on The Cool Down.

Compact solar panels designed to plug into a standard outlet from a balcony or apartment deck are closer than ever to ...

The workings of our solar system are roughly the same now as they have been for millions of years. Moons circle their planets, the planets circle the sun, the sun’s magnetic fields and sunspots wax ...

Microscopic crystals extracted from meteorites could help settle a debate about the birth of our patch of the Milky Way.