Ontario Power Generation

OPG News Release, May 26, 2006

May 26, 2006

ONTARIO POWER GENERATION'S PICKERING UNIT 1 OFF-LINE FOR MAINTENANCE AFTER 128 DAYS OF OPERATION

[Pickering]: Ontario Power Generation's Pickering Unit 1 was safely taken off-line on Thursday, May 25 as part of the station's planned maintenance program to help ensure its reliable operation during this summer's expected high power demands.

Pickering Unit 1 entered this short maintenance period after operating for 128 consecutive days. Inspections and maintenance on both conventional and nuclear systems will be undertaken during this outage.

Pickering Units 4, 5, 6 and 7 continue to operate at high power, delivering about 2,040 MW of electricity to the Ontario electricity grid. Unit 8 continues on its maintenance outage scheduled for completion later this spring.

Ontario Power Generation Inc. is an Ontario-based electricity generation company whose principal business is the generation and sale of electricity in Ontario. Our focus is on the efficient production and sale of electricity from our generation assets, while operating in a safe, open and environmentally responsible manner.

For more information contact:
Ontario Power Generation Media Relations
(416) 592-4008 or 1-877-592-4008