Sheffield has a District Energy system which exploits the city's domestic waste, by Incinerating it and converting the energy from it to electricity. It also provides hot water, which is distributed through over 25 miles (40 km) of pipes under the city, via two networks. These networks supply heat and hot water for many buildings throughout the city. These include not only cinemas, hospitals, shops, and offices but also universities (Sheffield Hallam University and the University of Sheffield), residential properties. Energy generated in a waste plant produces 36 MW of thermal energy and up to 6.8 MW electrical energy from 115,000 tonnes of waste. It is claimed[39] that for every 100,000 MWh of energy supplied by district energy 31,000 tonnes of carbon dioxide is displaced and that for eve