Name Location Capacity Type Operational Notes Qazvin hydrogen power plant Qazvin Province 200 KW Photoelectrochemical cell / fuel cell 2009 The plant is based on the idea of hydrogen economy, using photoelectrochemical cells to produce hydrogen for electricity generation in fuel cells. Shahid Esmaili power plant Tehran Province 7 MW Combined heat & power (CHP) system[1] N/A CHP is a system that involves the recovery of waste heat from power generation to form useful energy for other purposes such as heating. The system increases the efficiency of the power plant to more than 1.5 times that of traditional power plants.