Editing Enwave (section)

===Deep Lake Water Cooling System===
{{main|Deep Lake Water Cooling System}}
Enwave's Deep Lake Water Cooling (DLWC) is a system that harnesses the cold temperature at the bottom of Lake Ontario to cool hospitals, data centers, educational campuses, government buildings, commercial and residential buildings. Some customers include [[Toronto-Dominion Centre]], [[Royal Bank Plaza]], [[RBC Centre]], [[Metro Toronto Convention Centre]] and [[Scotiabank Arena]].

It utilizes three large pipes have been run {{convert|5|km|mi|abbr=off}} into Lake Ontario, to a depth of 83 metres. The water at that depth is a constant 4&nbsp;°C, its temperature protected by a layer of water above it, called a thermocline. The water is piped to a filtration plant and then to a heat-transfer station on the lakeside. Here the chill is “transferred” to another closed loop, consisting of smaller pipes that supply the towers of the city's financial district. Built at a cost of C$230m ($200m) over four years, the system is run by the Enwave Energy Corporation.<ref name=Economist07>{{Cite news |title=A cool concept |newspaper=The Economist |url=https://www.economist.com/technology-quarterly/2007/04/24/a-cool-concept |date=April 24, 2007}}</ref>

The cooling system is a clean, renewable, and reliable energy source. Compared to traditional air-conditioning, Deep Lake Water Cooling reduces electricity use by 75%, and will eliminate 40,000 tonnes of carbon dioxide, the equivalent of taking 8,000 cars off the streets.<ref name="theglobeandmail.com">{{Cite news|title='Energy of the future' flows into downtown Toronto|url=https://www.theglobeandmail.com/news/national/energy-of-the-future-flows-into-downtown-toronto/article20434567/|access-date=2020-07-24}}</ref>

Enwave draws cold water ({{convert|4|°C|°F|abbr=on|disp=x|/|}}) from a depth of {{convert|83|m|ft|abbr=off}} below the surface of [[Lake Ontario]].<ref>{{Cite news|title=An answer for the heat? Cool clear water|url=https://www.theglobeandmail.com/report-on-business/an-answer-for-the-heat-cool-clear-water/article18167644/|access-date=2020-07-24}}</ref> Cold lake water is pumped through the source side of [[heat exchangers]] situated at Toronto's John Street Pumping Station while a glycol and water mixture is circulated through the load circuit of the heat exchanger, allowing for a net energy transfer from the water/glycol mixture to the lake water. The chiller glycol mixture is then circulated using pumps throughout fan-coil units installed in high-rise properties throughout the region served by Enwave in Downtown Toronto where is absorbs energy and repeats the cycle to provide cooling and dehumidification. This system is advantageous since it reduces, or even completely eradicates chiller usage during summer months and shoulder seasons, reducing energy usage, as well as minimizing the number of evaporative [[cooling towers]] from operating, which are susceptible to becoming breeding grounds for [[Legionella pneumophila]].

This system was officially launched on August 17, 2004, at Steam Whistle Brewing, one of Enwave's customers. In support of Deep Lake Water Cooling (DLWC), the launch was attended by actor and renewable energy activist [[Alec Baldwin]], Ontario Minister of Energy [[Dwight Duncan]], Canadian Minister of Human Resources and Skills Development Joe Volpe, and Toronto Deputy Mayor Sandra Bussin, among other business leaders and government officials. The launch coincided with the anniversary of the [[Northeast Blackout of 2003|2003 blackout]].<ref name="theglobeandmail.com"/>