The Lostock Sustainable Energy Plant (LSEP) is an Energy from Waste facility which is currently under construction at the Lostock Works site near Northwich in Cheshire, formerly the coal fired power station for Lostock Works. It will export 69.9MW of electricity to the grid using residual waste (the waste material remaining once materials that can be recycled have been removed) as a fuel. It was was due to open in 2025 but is running behind schedule.

LSEP Ltd is a joint venture between Copenhagen Infrastructure Partners (CIP) and FCC Environment.