For years, solar power at home was mostly limited to people who owned their rooftops and could afford the steep upfront costs. But now, a new generation of small, affordable systems — often called ...

Small, plug-in solar power systems have become popular in Germany and several other countries. So why haven’t they taken off in the United States? By Claire Brown Across Germany, more than a million ...

Concentrated solar power (CSP) systems employing solid particle receivers represent a promising advancement in renewable energy technology. By replacing conventional heat transfer fluids with solid ...

Solar energy is the least expensive source of electricity in history and has been for the last six years according to the International Energy Agency. New technologies like black silicon are pushing ...

Across cities and suburbs, a quiet energy revolution is unfolding. Instead of large rooftop arrays installed by contractors, a growing number of households are experimenting with small, plug-in solar ...