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IESO Ends Power Warning

June 29, 2005

Toronto, June 29, 2005 - With lower demand for electricity expected tomorrow, the Independent Electricity System Operator (IESO) has determined, at this time, that there is no need for a Power Warning for Thursday June 30, 2005.

Ontario's electricity demand on Wednesday afternoon was under 25,000 megawatts (MW), lower than the levels set over the previous two days. While the forecast for tomorrow, the last day before the long weekend, is for continued warm weather and higher than normal demand levels, at the present time supply is expected to be sufficient to meet the demand for electricity.

"I would like to thank those Ontarians who were able to conserve electricity over the past few days - their efforts have made a difference," said Paul Murphy, Chief Operating Officer for the IESO. "As the system operator we continue to urge the responsible use of electricity, however at this time, we are no longer requesting extraordinary efforts to cut back on consumption."

Power Warnings are issued by the IESO during periods of high demand for electricity, when supplies of reserve power are low. Any further reduction in transmission or generation availability or any increase in demand could create shortfalls of electricity and require actions such as emergency purchases from other jurisdictions or voltage reduction on the Ontario system.

The IESO is responsible for managing Ontario's bulk electricity system and operating the wholesale electricity market. For more information, visit www.ieso.ca.