Most homes already have a smart meter that digitally communicates with the electric grid. If you're looking to get rooftop solar panels, a smart meter is an essential piece of equipment. Here's why.

Every solar panel company makes bold claims about its panel efficiency, maximum wattage availability, temperature coefficient and other specs in optimal conditions. Anyone who does product testing ...

One of the factors driving solar system sales is reduced prices for photovoltaic (PV) arrays. In 2016, prices for PV arrays dropped below $1/W for the first time. Another factor is improved inverter ...