Toronto Hydro Corporation

Toronto Hydro Corporation
Toronto Hydro-Electric System Limited

Toronto Hydro-Electric System Limited

July 09, 2008 10:27 ET

52,000 Air Conditioner peaksaver® Controls Triggered in Response to Yesterday's Hot Temperatures

TORONTO, ONTARIO--(Marketwire - July 9, 2008) - At the request of the Ontario Power Authority, Toronto Hydro-Electric System Limited (Toronto Hydro) yesterday dispatched peaksaver®, a residential electricity load management tool that helps manage the amount of power used by central air conditioners in Toronto and across Ontario on hot days.

Toronto Hydro activated peaksaver® switches in the City and on behalf of Coalition of Large Distributor members PowerStream Inc., Horizon Utilities Corporation, Hydro Ottawa Limited and Veridian Connections Inc., all who offer this program to their customers.

For the first time this season, Toronto Hydro activated peaksaver® to lighten the city's air-conditioning load caused by yesterday's hot temperatures, which reached a high of 32 degrees Celsius in the afternoon, with high humidity. With 52,000 residential and small business customers installed to-date, Toronto Hydro was able to shed 33.8 megawatts across the participating CLD customer base - the equivalent of removing approximately 11,300 homes from the grid, and more than 32 tonnes of GHG (greenhouse gas emissions) from the avoided coal fired-power generation. Toronto Hydro activated the devices at 2 p.m., and released control at 6 p.m., at which time the air conditioners resumed normal cycling operation.

When activated, the device located at the home receives a remote signal to reduce the operation of the air conditioner. Homeowners typically do not notice any change in temperature inside the house, however, the electricity load reductions achieved during peak demand periods are significant.

Homeowners and small business locations with central air conditioners located in the PowerStream Inc., Horizon Utilities Corporation, Hydro Ottawa Limited, Toronto Hydro-Electric System and Veridian Corporation territories are encouraged to participate in peaksaver®, which is supported by the Ontario Power Authority.

About Toronto Hydro-Electric System

A wholly-owned subsidiary of Toronto Hydro Corporation, Toronto Hydro-Electric System Limited delivers electricity through a complex network of poles, wires and underground structures to 678,000 customers and distributes approximately 18 per cent of the electricity in the province of Ontario. Toronto Hydro Corporation is owned 100 per cent by the City of Toronto.

About The Coalition of Large Distributors

The Coalition of Large Distributors, which consists of Enersource Hydro Mississauga, Horizon Utilities, Hydro Ottawa, PowerStream, Toronto Hydro-Electric System Limited and Veridian Connections, provides electricity for 40 per cent of Ontario's electricity customers. Their goal is to continue to develop, incubate, pilot and fully implement conservation and demand management programs that support the Government of Ontario's plans to reduce peak electricity demand in the province of 6,300 MW by 2025.

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