A power plant, powerhouse, or generating plant is an industrial facility that produces electrical power. The key source for producing the electricity is a generator, a rotating machine that uses mechanical power to create electrical power. The source of energy for turning the generator varies widely.
With new Environmental Protection Agency (EPA) regulations, power plants are required to cut down on the emissions related to fossil fuels (coal).
The process commonly used is called selective catalytic reduction (SCR). A post-combustion NOX reduction technology in which ammonia (NH3) is added to the fuel gas passing through layers of a catalyst. The ammonia and NOX react on the surface of the catalyst and form harmless nitrogen (N2) and water vapor.