New products from SolarCity and now SunPower (SPWR +0.00%) could bring a renaissance in commercial solar. And that could lead to a big increase in profits for investors. Commercial solar's big problem ...

SunPower Solar Partnership San Francisco - reflects real-time market developments shaping trading activity and financial ...

SunPower has introduced its Helix commercial rooftop PV kits onto the market. The U.S. company says that the system can deliver 72% more energy, over 25 years, when compared to a conventional array ...

Residential solar has been the hottest (although not the biggest) sub-market in the solar industry for at least five years now. Companies like SolarCity have made residential solar a possibility for ...