Hydro Ottawa Participates in IESO Voltage Reduction Exercise

OTTAWA, July 22, 2013 /CNW/ - Hydro Ottawa, along with other local distribution companies throughout Ontario, is participating in a province-wide exercise to ensure emergency preparedness for our power system.

On July 23, the Independent Electricity System Operator (IESO) will conduct a voltage reduction test.

Voltage reduction is an emergency operating measure that the IESO can employ in order to protect the reliability of the power system or to avoid the need for rotating power outages when the demand for electricity in the province exceeds supply. The IESO performs this test every 18 months.

Brief voltage reductions of this scale are not noticeable to most customers except for the possibility of a slight dimming of the lights.

The test will consist of two exercises: a 3% voltage reduction between 9 a.m. to 10 a.m., followed by a 5% voltage reduction from 1 p.m. to 2 p.m. (EST). The exercise may be rescheduled to July 25 if system conditions are unfavourable.

To report any disruption in power during the exercise or at any other time, please call Hydro Ottawa's 24-hour Power Outage line at 613-738-0188.

About Hydro Ottawa
Hydro Ottawa Holding Inc. (Hydro Ottawa) owns and operates two subsidiary companies, Hydro Ottawa Limited and Energy Ottawa Inc.  Hydro Ottawa Limited is the third largest municipally owned electrical utility in Ontario serving more than 310,000 customers in the City of Ottawa and the Village of Casselman. Energy Ottawa Inc., Ottawa's largest producer of green power, generates renewable energy and provides commercial energy management services.

SOURCE: Hydro Ottawa Holding Inc.

For further information:

Rebecca Hickey
Supervisor, Media and Public Affairs
Hydro Ottawa
613-738-5499 ext. 145
rebeccahickey@hydroottawa.com


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