Carbon Power Plant, also known as Castle Gate Power Plant, was a relatively small, 190-MWe coal-fired power station in Utah, US, operated by PacifiCorp. Utah Power & Light constructed its Carbon Steam Generating Plant at Castle Gate in the mid 1950s. Its units 1 and 2, rated at 75 and 113.6 MWe, were placed in service in 1954 and 1957. The plant was located at 39°43′38″N 110°51′51″W, about 3 km (2 mi) north of Helper, Utah, on the east bank of Price River.