Free tools can help you estimate how much energy you'll get from a plug-in solar panel - and how long it'll take to earn your money back. But can you trust them?

How many years does it take for solar power to pay for itself?Last time, I replaced the equipment costs with market-level ...

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 ...

More and more US homeowners are turning to rooftop solar, as energy bills and power outages are on the rise. Whether your goals are cost savings, more independence from the centralized energy grid, ...

Solar homes generate most of their energy from a combination of solar technologies (e.g., solar panels, solar tubes and solar windows). Most solar homes rely primarily on photovoltaic (PV) solar ...