Deal with SolarCity is search giant's largest clean tech investment

Home improvement giant buys stake in rooftop solar start-up

Financing models make going solar affordable.

Rhode Island researchers look to harvest solar energy from asphalt.

African country reveals plans for world's biggest solar plant.

1366 Technologies raises $20 million to fund a cheaper path to solar power.

Mojave Desert facility will be California's first solar thermal project in two decades.

Japanese "solar sail" propelled by the sun.