State Energy Conservation Office: Feasibility of Photovoltaic Systems [Pdf]

Summarizes how a photovoltaic or PV system works to convert solar energy into electricity. Explains how to estimate what size of PV system is needed and what the cost would be, and provides a worksheet with formulas for calculating these. The cost can then be compared to available alternatives and, if it is too high, it is recommended that one work on incorporating more energy efficient features into the home's design.