River Aire east of Castleford; Ferrybridge C, Eggborough and Drax. Drax takes its cooling water from the Ouse, but both Ferrybridge and Eggborough draw their water from the Aire. Both of these plants stopped generating in 2016, with Eggborough being a stand-by for capacity problems until March 2017. A hydroelectric power station was installed on the Brotherton Weir at Knottingley in November 2017. The £7.5 million project is expected to deliver 500 kilowatts per year and be operational for 100 years. Due to the Aire flowing through the former industrial landscape of West Yorkshire, it had a reputation as being heavily polluted.
Yorkshire and the Humber stations along the Aire Valley, with Drax being the second largest in Europe with 3,945 MW of capacity, and Eggborough which is owned by the Czech Republic's Energetický a průmyslový holding (EPH) since 2014 and was owned by British Energy until 2010; Ferrybridge C closed on 23 March 2016. The distribution area once looked after by the regional electricity company Yorkshire Electricity is now looked after by Northern Powergrid (former YEDL), owned by Berkshire Hathaway (since 2001) of Omaha, Nebraska. The supply side of the region is now owned by npower (former National Power, now owned by RWE of Essen,