The Petty Harbour Hydro Electric Generating Station is a hydroelectric generating station in Petty Harbour–Maddox Cove, Newfoundland and Labrador. It was constructed in 1898 and it was the first hydroelectric generating station in Newfoundland. It was built by the St. John's Street Railway Company, a company established by Robert Reid. Operation commenced on 19 April 1900.thumb|Original Turbine at Petty Harbour 1900
In 1920 Reid renamed the company the St. John's Light and Power Company. On 7 February 1921, an avalanche destroyed of the wooden penstock that carried water from the dam to the generating station, cutting off all electrical power to St. John's for almost five days.thumb|Front of generating station at Petty Harbour
Technical Information
Equipment
Source:
Turbines
Unit 2
Originally installed in 1900
Victor type (early Francis turbine): 1.4 MW, Manufactured by Stillwell, Bierce & Smith Vaille Co.
Replaced in 1908 with: Horizontal Francis, 1.57 MW, Manufactured by Voith
Unit 1
Originally installed in 1902
Inward-flow Girard type (impulse turbine):1.4 MW, Manufactured by Stillwell, Bierce & Smith Vaille Co.
Replaced in 1912 with:
Horizontal Francis: 1.57 MW, Manufactured by Voith
Unit 3
Installed 1926
Horizontal Francis: 2.05 MW, Manufactured by Armstrong Whitworth
Generators
Unit 2
Installed in 1900: 3-phase: 60 Hertz, 550 volts
Manufactured by Westinghouse
Replaced in 1926 with: 3-phase, 60 Hertz, 2,300 volts
Manufactured by General Electric
Unit 1
Installed in 1902: 3-phase, 60 Hertz, 550 volts
Manufactured by Westinghouse
Rewound in 1926 to 2,300 volts
Unit 3
Installed in 1926: 3-phase, 60 Hertz, 2,300 volts
Manufactured by General Electric
Construction
Powerhouse
48.8 metres long by 7.3 metres wide by 4.9 metres high Masonry construction