Sheffield centre and retail parks, Ecclesall Road, London Road, Hillsborough, Firth Park and the Crystal Peaks shopping centre. In a 2010 survey of forecast expenditure at retail centres in the United Kingdom, Meadowhall was ranked 12th and Sheffield City Centre 19th. Sheffield has a District Energy system that 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 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,
Colonnades Leisure Park (Valley Park has IKEA and Purley Way Retail Park has Sainsbury's), although it centres itself as more of an entertainment complex than shopping area. The retail park is the southern most on the A23 Purley Way road and is close to Purley town centre. The site of Croydon Airport is opposite the site of the retail Park. Most of the outlets in the park are entertainment oriented, such as City Limits an indoor entertainment centre with a restaurant, sports bar, arcade and bowling facilities. Other tenants include Gipsy Moth family pub and restaurant, Pizza Hut, McDonald's, Premier Inn, a Kidspace