What is the energy payback for photovoltaics? Producing electricity with solar photovoltaics (PV) emits no pollution, produces no greenhouse gases, and uses no finite fossil-fuel resources. The environmental benefits of PV are great. But just as we say that it takes money to make money, it also takes energy to save energy. The term “energy […]
Part 7 of A Guide to Making Energy-Smart Purchases. Most consumers are looking for the greatest return for the least investment. This does not necessarily mean, though, that you should buy the least expensive product or system on the market. In fact, spending a little more money initially for an energy-efficient product or system (as […]