Solar water heating has a proven record of cutting energy costs. Here's what you need to know to help customers choose the right system.
Q. Solar modules that can be installed in place of roof shingles seem to make more sense than PV modules mounted on racks above the roof (see "Installing Solar Electric Power," 3/05). Besides being much less noticeable, it seems that using photovoltaic sh
A photovoltaic system should be properly sized, built to code, and installed so the roof doesn't leak.