Immingham Power Station
Immingham Combined Heat and Power Plant (also known as Conoco Philips Power Station) is a gas-fired CHP power station in North Lincolnshire, England. It is situated on the south bank of the Humber, north of the town of Immingham, from which it takes its name. Its generating capacity of 730 megawatts makes it Europe's largest CHP plant. The station has been operated by energy company ConocoPhillips since it opened in 2004.

History
Plans for the power station began in 1998, when ways to provide power for both refineries were investigated. Due to the low price of electricity when the designs for the station began in 2004, the plant would have not been economically viable unless tax-incentives were given by the UK government. These were in the form of exemption from the Climate Change Levy and greater offsets against tax for the plant's depreciation. It was opened on November 1 2004 by Margaret Beckett, and is owned by ConocoPhillips. The £350m plant is sited on the Humber Refinery. It is a CHP plant, providing electricity and heat for the refinery's processes. Excess steam goes to the neighbouring Lindsey Oil Refinery and excess electricity goes to the National Grid. It was designed by Foster Wheeler Energy and built by Kier. The power station trades as Immingham CHP LLP.

Specification
It is a CCGT type power station using natural gas. Two 260MW General Electric Frame 9 (9001FA) gas turbines generate electricity with the exhaust gas from each heating a Nooter Eriksen heat recovery steam generator. Nooter is based in Cardano al Campo in the Italian Varese province. The steam from each these HRSGs transfers to a steam turbine. The two 115MWe steam turbines are built by Franco Tosi Meccanica based in Legnano in the Italian province of Milan. There are also two auxiliary boilers. Each boiler can provide 50% of the steam needs (at 50 bar) for each refinery. It normally exports around a minimum of 150MW to the National Grid, but this can be increased depending on the needs of the Grid and the two refineries. The plant is about 70% thermally efficient. The refinery operations need around 25MW of electricity. Each steam turbine uses a maximum of 300 tonnes of steam per hour. Around 190 tonnes per hour of steam goes to the Humber Refinery, and around 160 tonnes per hour goes to the Lindsey Refinery.

Future of the plant
In October 2006, ConocoPhillips approved a £210m extension of the plant to produce 1,180MW. The new Phase II plant is expected to be opened in the summer of 2009, producing an extra 450MW. It will consist of one 285MWe gas turbine, one HRSG and a 200MWe steam turbine. Due to a strike in 2009, some construction workers have not been on site.