Lake Ontario water cools
CBC News Online
Published August 18th, 2004
TORONTO - A new environmentally-friendly air conditioning
system that uses frigid water drawn from the depths of Lake
Ontario to cool downtown Toronto office buildings was officially
The system, in the making for seven years, was developed
by Enwave District Energy Limited, which is jointly owned
by the City of Toronto and the Ontario Municipal Employees
It draws water from 83 metres below the surface of Lake
Ontario through a pipeline jutting five kilometres out
from the city shoreline to a downtown pumping station.
The 4 C water chills the coolant which is used to air
condition 20 downtown buildings, including the Air Canada
Centre, the Metro Toronto Convention Centre, Royal Bank
Plaza and Steam Whistle Brewing.
When running at full capacity, the company says the system
will cool nearly 100 buildings or seven million square
metres of office space and reduce electricity use by 75
per cent, eliminating 40,000 tonnes of carbon dioxide
from the air.
Federal cabinet minister Joe Volpe attended the launch
to announce a $10 million investment in Enwave by the
Green Municipal Investment Fund, which is administered
by the Federation of Canadian Municipalities.
"The launch of Enwave's Deep Lake Cooling System
is a 'first' not only for Canada, but also for North America,"
the federation's second vice-president Gloria Kovach said.
Hollywood star and environmental activist Alec Baldwin
was also on hand to heap praise on Canada's "forward
thinking" approach to energy.
"This is an important signal you are sending not
only to your fellow countrymen but to the world,"
Baldwin said. "There's no project on a municipal
level this size that's been attempted or has been executed
before like this."
Enwave chief executive Dennis Fotinos said the company
plans to stretch the system eastward along the Toronto
waterfront and boost its capacity by an additional 30
The Ontario government is also discussing extension of
the system to the Ontario legislature and surrounding
Written by CBC News Online staff