City of Calgary Municipal building. Edmonton: The community of Blatchford, which is currently being developed on the grounds of Edmonton's former City Centre Airport, is launching a District Energy Sharing System (DESS) in phases. A geo-exchange field went online in 2019, and Blatchford's energy utility is in the planning and design phase for a sewage heat exchange system. Hamilton, ON has a district heating and cooling system in the downtown core, operated by HCE Energy Inc. Montreal has a district heating and cooling system in the downtown core. Toronto: Enwave provides district heating and cooling within the downtown core of Toronto, including deep lake cooling technology, which circulates cold water from Lake Ontario through heat exchangers to provide cooling for many buildings in the city. Creative Energy is constructing a combined-heat-and-power district energy system for the Mirvish Village development. Surrey: Surrey City Energy owned by the city, provides district heating to the city's City Centre district. Vancouver: Creative Energy's Beatty Street facility has operated since 1968 and provides a central heating plant for the city's downtown core of Vancouver. In addition to heating 180 buildings, the Central Heat Distribution network also drives a steam clock. Work is currently underway to move the facility from natural gas to electric equipment. A large scale district heating system known as the Neighbourhood Energy Utility in the South East False Creek area is in initial operations with natural gas boilers and serves the 2010 Olympic Village. The untreated sewage heat recovery system began operations in January 2010, supplying 70% of annual energy demands, with retrofit work underway to move the facility off its remaining natural gas use. Windsor, Ontario has a district heating and cooling system in the downtown core. Drake Landing Solar Community, AB, is small in size (52 homes) but notable for having the only central solar heating system in North America. London, Ontario and Charlottetown, PEI have district heating co-generation systems owned and operated by Veresen. Sudbury, Ontario has a district heating cogeneration system in its downtown core, as well as a standalone cogeneration plant for the Sudbury Regional Hospital. In addition, Naneff Gardens, a new residential subdivision off Donnelly Drive in the city's Garson neighbourhood, features a geothermal district heating system using technology developed by a local company, Renewable Resource Recovery Corporation. Ottawa, contains a significant district heating and cooling system serving the large number of federal government buildings in