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 ...

Faith Foushee is a CNET contributor and a former writer for SaveOnEnergy.com, covering energy-efficient products, renewables and other energy topics. She enjoys learning about new energy technology ...

Perhaps you’re dreaming of obtaining your home’s electricity without having to rely on that provided by your town or city. If so, you’re hoping to go “off the grid.” And if that’s your dream, you’ve ...