Urbanland
Summary
As North America’s fourth-most-populous and fastest-growing large city, Toronto is powering through with a robust yet low-carbon expansion of its energy capacity. Using its Deep Lake Water Cooling (DLWC) system, the city is able to displace 55 megawatts of energy per year from the grid—enough to power eight hospitals.
To achieve these results, DLWC harnesses cold water at the bottom of Lake Ontario to cool hospitals, data centers, educational campuses, and government, commercial, and residential buildings. DLWC uses less than one-tenth the energy required for conventional air conditioning.
DLWC, the world’s largest lake-powered cooling system, is operated by Toronto-based Enwave Energy Corporation, a fully integrated district energy company, and was launched in 2004 at a cost to the city of C$230 million (US$179 million). With Enwave’s other district energy systems in Toronto, DLWC serves as a prism through which to understand the background and status of district energy generally.
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