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PAGE 12THE CANADIAN STATESMAN, AUGUST 27, 2003 www.durhamregion.com THANK YOU! THANK YOU TO ALL ELECTRICITY CUSTOMERS IN ONTARIO FOR DOING YOUR PART TO MANAGE YOUR ELECTRICITY USE. YOU HAVE HELPED THE PROVINCE TO GET THROUGH THIS EMERGENCY SITUATION. WE ALSO WANT TO ACKNOWLEDGE THE HARD WORK AND DEDICATION OF THOUSANDS OF ONTARIO POWER GENERATION (OPG) EMPLOYEES ACROSS THE PROVINCE WHO HAVE WORKED TIRELESSLY TO RECONNECT OUR GENERATING STATIONS TO THE GRID. THE SUCCESS OF THEIR WORK OVER THE PAST WEEK IS EVIDENT IN THE AMOUNT OF ELECTRICITY GENERATION THEY HAVE RESTORED. ON THURSDAY, AUGUST 14 AT 4:11 PM, the electricity grid across much of northeastern North America failed, leading to blackouts. After placing ORG's generating stations into safe states, our employees immediately began the restoration effort to reconnect the stations to the grid. BY MIDNIGHT ON AUGUST 14, about 35% of our generating capacity was connected to the grid. This generation was mostly hydroelectric a.nd one Darlington nuclear unit plus some fossil-fueled generation. BY FRIDAY, AUGUST 15, about 60% of our generation was connected, including a large part of our fossil generation. BY MONDAY, AUGUST 18, we had about 85% of our generation connected, including all of our hydroelectric, most of our fossil generation, and all four units at our Darlington nuclear station. BY SATURDAY, AUGUST 23, about 95% of our generation was connected, including two Pickering B units. 0% PER CENT OF OPG GENERATION CAPACITY RECONNECTED TO THE GRID-AUGUST 14 TO 23 100% 90% 80% 70% 60% 50% 40% 30% - 20% - 10% llllllllll ^ ^ f * / / ./ <=• I I Fossil I I Nuclear Hydroelectric RECONNECTING NUCLEAR REACTORS TO THE GRID Reconnecting nuclear reactors to the grid is not a race. The safe restart must always be the overriding consideration. OPG produces electricity at two nuclear stations - Darlington and Pickering B. By Monday, August 18, we had reconnected all four Darlington units to the grid, representing about two-thirds of our nuclear generating capacity. This compares favourably with neighbouring jurisdictions. The Pickering B units require more time than the Darlington units to be brought back on line. This is because of substantial design differences between the stations, and because of the impact of the August 14 event on the Pickering units. To date we have two Pickering B units back in service. We expect the other two to return over the next few days. putting our energy to good use www.opg.com ONTARIOPOwER GENERATION