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Alexander Generating Station

Alexander Generating Station

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A hydroelectric station on a river.

Alexander Generating Station

DRAINAGE BASIN: Lake Superior
RIVER: Nipigon
NEAREST POPULATION CENTRE: Nipigon (16.9 km south)
IN SERVICE DATE:
UNIT 1 - October 1930
UNIT 2 - December 1930
UNIT 3 - March 1931
UNIT 4 - 1945
UNIT 5 - April 1958
BUILT BY: Hydro-Electric Power Commission of Ontario
ASSET TRANSFERRED TO ONTARIO POWER GENERATION: April 1, 1999
NUMBER OF UNITS: 5
CAPACITY:  69 MW

Located on the Nipigon River, about 16 km northwest of the Township of Nipigon, Alexander Generating Station (GS) produces enough electricity each year to power about 60,000 homes. One of OPG’s oldest stations, it was built in the late 1920s to meet increasing demand for electricity in the cities of Fort William and Port Arthur (now known as Thunder Bay).

Controlled from our Northwest Operations Control Centre in Thunder Bay, and maintained by crews working out of our Cameron Falls Work Centre, Alexander GS has served Ontario safely and reliably for more than 85 years.

An amazing accomplishment for its day, the engineering and construction of the station employed unique techniques and methods, including creation of the largest earth dam of its time that changed the course of the Nipigon River.

More recently, Alexander GS received the 2015 Overall Best Performer award by Navigant Consulting. This international award recognizes hydro plants for excellence in operations and maintenance cost, plus availability and reliability, and is testament to the skills and experience of our employees.

Ongoing reinvestment in the modernization and refurbishment of the station ensures this treasured heritage asset will operate safely and reliably for many decades to come.

As with the operations at all of our generating stations, OPG is considerate of the environment and other users of the waterways. Our technicians manage water levels and flows according to approved water management plans. The amount of water available for generation depends on environmental needs, minimum and maximum water level requirements, and precipitation.

Alexander GS generates clean, renewable electricity 24 hours a day, 365 days a year, and is part of OPG’s clean energy portfolio which is more than 99 per cent free of greenhouse gas and smog emissions.