Kirkthorpe hydro is a hydroelectric generating plant located on the River Calder at Kirkthorpe Weir, 4 miles (6.4 km) east of the City of Wakefield in West Yorkshire, England. The plant was opened in 2017 and expects to be generating electricity for 100 years. Kirkthorpe Weir is the highest industrial weir in Yorkshire and has prevented fish passing upstream to spawn; the new hydro project has a fish pass built into it. At a nameplate capacity of 500 kWh, along with another plant at Brotherton on the River Aire, the plant is jointly the largest hydroelectric generator in Yorkshire.