Test your knowledge on solar energy and see if you have what it takes!
"Photovoltaic" has two parts: photo, derived from the Greek word for light, and volt, from electricity pioneer Alessandro Volta. And that's exactly what photovoltaic systems do -- turn light into electricity!
Heating or cooling your house represents nearly half of all energy consumed at home. Ensuring you have adequate insulation and fixing leaks help you save big on your energy bills and shrink your carbon footprint.