Stewart Generating Station (0.2 MW) - Arnprior: Waba

On January 1, 2015, the Ontario Power Authority merged with the Independent Electricity System Operator to create a new organization that combines the OPA and IESO mandates.

Please note that the information on this page is not current and will not be updated. A new format for contract data will be published soon.


Stewart Generating Station is a single-unit hydroelectric station located on the Waba Creek in Arnprior, Ontario. The station was commissioned in 1990. The station has an installed capacity of 0.2 MW at a head of 14.53 metres.

The station is run-of-river without storage capability. The headwork consists of a concrete diversion gravity dam with four stoplog bays that leads to an earth canal and to the concrete intake. One steel penstock conveys water to the powerhouse.

The station is connected to Hydro One’s 12.48 kV circuit F1 at Pine Grove DS.

Location: Arnprior, Ontario
River System: Waba Creek
Nameplate Capacity: 0.2 MW
OPA Contracted Capacity: 0.2 MW
Operator: Misty Rapids Power
Technology: Hydroelectric
Turbines: One Kaplan turbine
Originally Built: 1990
Coordinate: 45° 21' 28.60" N, 76° 26' 57.33" W

Project Contacts:

Ontario Power Authority

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