Electricity Generation - Electric power transmission, Static electricity, Faraday's law of induction, Electrochemistry, Photoelectric effect, Thermoelectric effect, Piezoelectricity, Electrostatic generator, Van de Graaff generator, MHD generator, Turbine, Reciprocating engine, Photovoltaics, Energy harvesting, World energy resources and consumption, Global warming, Electricity retailing, Environmental concerns with electricity generation