John Mills, P.E., LEED AP, Associate Principal, Goetting & Assocs., San Antonio

An enlightened look at photovoltaic cost

Given the double digit growth in the photovoltaic industry, PV conversion of sunlight is quickly making economic sense. There are two basic types of PV systems: grid-connected and remote-storage. Grid-connected systems are connected directly to the building power system to supplement the power delivered by the local utility.