Salt End Power Station was commissioned in 2000 by Entergy an American power generator. It was later sold to Calpine Corporation, also an American power generator, in August 2001 for £562 million. In July 2005, Salt End was sold to International Power and Mitsui (70:30 share) for £500 million. The site was built by Mitsubishi (MHI) and Raytheon.

The station is run on gas using single shaft 3 × Mitsubishi 701F gas Turbines machines with Alstom 400 MWe generators. The station has a total output of 1,200 MW; of that 100 MW is allocated to supply BP Chemicals. Each gas turbine has a Babcock Borsig Power (BBP) heat recovery steam generator, which all lead to one steam turbine per unit (single shaft machine means Gas turbine and Steam Turbine are on the same shaft). The waste product of electricity generation is steam at the rate of about 120 tonnes/h which is sold to BP Chemicals to use in their process. This makes Salt End one of the most efficient power stations in the UK. The plant is scheduled to use hydrogen from steam reformed natural gas for 30% of its power.