Profile: California Center for Sustainable Energy provides programs, services and forums for renewable, sustainable & efficient energy technologies. We offer solar energy technologies that include photovoltaics and solar water heating & fuel cells, which are energy conversion devices that continuously transform the chemical energy of a fuel & an oxidant into electrical energy. We also deliver gas turbine engine technologies, which extract energy from hydrocarbon fuels through compression, combustion and hot gas expansion & technologies for cogeneration & internal combustion engines.