Olympic Park Energy Centre is one of the largest combined cooling, heating and power generating facilities built in the UK.  The facility has been built for sustainable energy generation during the 2012 Olympic and Paralympic Games. The project was developed by the Olympic Delivery Authority (ODA) and was opened in October 2010. A second energy centre has been built in the Stratford City. It will also serve the heating, cooling and electricity requirements of the Games venues and other facilities. The Energy Centre design is based on iconic or well-known industrial revolution buildings such as the Tate Modern and Battersea Power Station. The Energy Centre includes much of the old Edwardian building of King’s Yard. It took two years to remove 52 overhead electricity pylons from the Olympic site. 200km of electricity cables run beneath the ground through two 6km tunnels. Both the energy centres will serve the new metropolitan development in East London after the 2012 Games.