TORONTO, July 22, 2013 /CNW/ - The Independent Electricity System
Operator (IESO) will conduct a routine voltage reduction test on
Tuesday July 23, 2013 as part of mandatory testing of its emergency
operating measures. This test will have minimal or no noticeable impact
on the public at large.
Voltage reductions lower demand quickly and minimize the likelihood of
service interruptions, helping the IESO maintain the reliability of
Ontario's power system during contingencies.
A three per cent reduction is expected to occur from 10-11am EDT. A five
per cent reduction is planned for 2-3pm EDT. The tests are normally
conducted every 18 months.
Voltage reduction tests have three key purposes:
To determine how much power can be reduced through the two levels of
To identify equipment problems so they can be addressed.
To help keep IESO and market participant staff familiar with procedures,
and identify any deficiencies in the procedures that may need
Consumers with questions about the test should contact their local
distribution company. A list of local distribution companies is
available at www.ieso.ca/findutility.
More information about voltage reductions is available on the IESO
website at www.ieso.ca/voltagereduction or by contacting IESO customer relations at 1-888-448-7777.
The IESO is responsible for managing Ontario's bulk electricity power
system and operating the wholesale market. For more information, please
SOURCE: Independent Electricity System Operator
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