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Arnprior Generating Station

Arnprior Generating Station

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Arnprior Generating Station

DRAINAGE BASIN: Ottawa River
RIVER: Madawaska
NEAREST POPULATION CENTRE: Ottawa (64 km east)
IN SERVICE DATE:
UNIT 1 – 1976
UNIT 2 - 1977
BUILT BY: Ontario Hydro
ASSET TRANSFERRED TO ONTARIO POWER GENERATION: April 1, 1999
NUMBER OF UNITS: 2
CAPACITY:  82 MW

Arnprior Generating Station (GS) is located at the end of the Madawaska River and can be seen from highway 417. Completed in 1976, this station is the youngest OPG-owned facility in Eastern Ontario and produces enough clean, renewable power for 82,000 homes.

Development on the Madawaska River for power production began in the 1940s with the purchase of Calabogie GS from the Calabogie Light and Power Company, and the construction of Barrett Chute GS, Stewartville GS and Mountain Chute GS followed soon after. The lakes that were either created or restored helped Arnprior and other Madawaska River communities expand into a residential and recreational hot spot.

The weir is an artificial waterfall.
The Arnprior weir is an artificial waterfall.

​When Arnprior GS was built, engineers had to address the change in water elevation. The solution was to construct a weir (an artificial waterfall), which helped to control water levels between the Madawaska and Ottawa rivers. The weir, much like the station, is a part of the town’s landscape. While a prominent feature, the weir can be dangerous and people should not attempt to get close. Warning signs, fencing and a large yellow safety boom are in place for the public’s protection. To learn about OPG’s water safety program, please visit stayclearstaysafe.ca.

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 the approved Madawaska River Water Management Plan. The amount of water available for generation depends on environmental needs, minimum and maximum water level requirements, and precipitation.
 
Arnprior 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.