1948- alternative biography building-integratedphotovoltaicsystems carpenters congresses conversionphotovoltaïque costeffectiveness desertresourcesdevelopment designandconstruction dwellings electricproperties energyconservation energydevelopment energystorage engineering environmentalaspects environmentaldevelopment equipmentandsupplies fowler fowlersolarelectric general governmentpolicy liquidcrystals materials microirrigation pauljeffrey photovoltaicpowersystems powerresources powersupply renewable renewableenergysources science solarbatteries solarcells solarcollectorindustry solarcollectors solarconcentrators solarenergy solarenergyindustries solarenergypolicy solarheating solarhouses solidstatephysics sustainableengineering tec031000tec031010 technologicalinnovations technology thinfilmdevices thinfilms unitedstates