This new edition offers a comprehensive treatment of all phases of Photovoltaic System design, installation, commissioning, inspection, and operation, including why and how the basic system components work on an engineering level. The book also explains the basic physical principles upon which the technology is based and a consideration of the environmental and economic impact of the technology. Content has been completely revised and updated and now includes 10-30 homework problems per chapter. Additionally, there is a solutions manual available for adopting professors.