According to the Energy storage in the UK report, there are currently 35 standalone grid-connected energy storage projects and 1,500 active residential energy storage systems – ranging from lithium-ion batteries to pumped-hydro schemes – across the UK, as of August 2016. This existing storage operating capacity of 3.23GW is broadly the equivalent to that of the Hinkley Point C nuclear project in Somerset, or to four new large gas power plants.