What is the current status of this project I asked myself?

Background
The City of Toronto invested in the Enwave Energy Corporation, who take naturally cold water (4 degrees C) from deep down in Lake Ontario and use it to remove the heat from their circulated chilled water supply system.

The city’s Metro Hall started using this system in June 2006 and saved enough energy to power 174 houses annually.

Current Details
46 buildings have signed up for this system, and 27 buildings had been connected by this past July.

Future
Hopefully the benefits of such a system continue to prove to exceed any downsides. And perhaps more cities could tap into this or Deep Ocean water cooling as well. It’s an interesting, easy seeming fix to wasted energy.