Minden Generating Station (4.0 MW) - Minden: Gull River

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.

The Minden Generating Station is a two-unit hydroelectric station located on the Gull River, located just north of the village of Minden and east of the intersection of HWY 35 and Horseshoe Lake Road #1, in Minden. Construction on the site began in 1934 and the plant began producing electricity on August 21, 1935. The station has an installed capacity of 3.6 MW.

The station consists of a powerhouse, a concrete gravity section, spillway, and intake block. Each intake contains trash racks near the entrance. Behind each intake are two steel headgates, which can be raised or lowered with a chain into the intakes to provide a water stop to the penstock entrance. The two penstocks are 2.44 metres in diameter and 45.72 metres in length on steel saddles are embedded in the top of concrete piers, in order to the anchor block at the east side of the power house.

Minden is connected to the Hydro One 44kV 87M3 feeder at Minden TS via Orillia Power Generation 3M3-D circuit.

This hydroelectric generating station generates approximately 21,750 MWh of renewable energy per year.

Location: Minden, ON
River System: Gull River
Nameplate Capacity: 3.6 MW
OPA Contracted Capacity: 4.0 MW
Operator: Orillia Power Generation Corporation
Technology: Hydroelectric
Turbines: Two vertical reaction type turbines
Originally Built: 1934
Coordinate: 44°56'28.90"N, 78°42'28.57"W

Project Contacts:

Ontario Power Authority
Media and Public Relations
T. 416-969-6307 or