London Street Generating Station is a three-unit hydroelectric station located on the Otonabee River in the city of Peterborough. The facility was constructed circa 1884 and was acquired by the City of Peterborough in the 1970's with ownership transferred to Peterborough Utilities Inc. in 2001. The facility has an installed capacity of 4.1 MW at a head of 8.5 metres.

Located upstream of Little Lake and downstream of OPG’s Auburn Generating Station, the facility utilizes an automated sluice gate to maintain water levels and flows through the Otonabee River. The facility is also continuously monitored and controlled by operators at the Peterborough Water Treatment Plant.

The London Street station spans approximately 125 meters across the Otonabee River, with the powerhouse located on the south shoreline. The components of the water-retaining dam structure include the north abutment, the spillway structure with 11 stop log sluices, one log chute with stop logs, and one gated sluice. The forebay extends approximately 35 meters upstream of the powerhouse and is approximately 32 meters in width. Flow is conveyed to each turbine through a concrete flume upstream of the powerhouse, and has no penstocks. The tail race channel extends approximately 400 meters downstream of the powerhouse where it rejoins the main channel of the Otonabee River.

London Street is connected to Hydro One’s 230kV Otonabee TS via Peterborough Distribution Inc.’s 44kV M26 feeder.

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