Cogeneration

Cogeneration is the simultaneous production of two or more forms of useable energy from a single fuel source. By using the fuel "twice" this technology has greater efficiencies than using the fuel to solely generate electricity. Possible primary fuels include biomass materials (explained below), and fossil fuels like natural gas, coal or oil. Most systems are designed to produce electricity (which is used in-house or sold to an electric utility) as well as thermal energy for industrial processes (such as steam). Cogeneration is especially useful for Thermally Enhanced Oil Recovery (TEOR) projects which extract thick oil from older fields. Over 80% of the world's TEOR recover oil comes from California. Cogeneration systems can range in size to fit the users' needs. For example, cogeneration is used at hospitals, food processing facilities, universities, housing projects and shopping centers.

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