Keadby Gas Power Station was commissioned on 22 January 1996, and was opened by Scottish Hydro Electric and NORWEB when the site was in South Humberside. Scottish Hydro bought the 50% share of Keadby Generation Ltd, then owned by United Utilities, in March 1997 for £253 million. It is now owned by Scottish and Southern Energy.

In March 2013 the power station was 'deep mothballed' in response to adverse market conditions; it reopened in December 2015 after winning a stand-by contract to provide 734 MWe of capacity.

It is a CCGT type power station running on natural gas. There are two General Electric Frame 9FA gas turbines each rated at 250 MWe. The total thermal input is 1329 MW. Each gas turbine is connected to a heat recovery steam generator which connect to one steam turbine which has an output of 260 MWe. Steam is condensed using water from the River Trent. There is a 25 MWe 11 kV gas turbine available for black starts when there is no power to start producing electricity. The station connects to the National Grid at 400 kV, being used for baseload.