Five Mile Station is one of O’Connell’s largest design build substation construction projects to date. Owned by National Grid, the new station was built to support the 115 kV system in the Southwest region of NY State by supplying power to the Gardenville-Homer Hill Line and the Arcade-Homer Hill Line. The station occupies nineteen acres of land and will consist of a new 345kV/115kV transmission station, two new 250 feet long 345kV transmission loops and four new 650-foot-long 115 kV loop connections.
The project included installation of a 4-breaker 345kV ring bus that feeds three bays of 115kV breaker and a half through a 400MVA power transformer. Also, a 4000-square-foot control building to house approximately 60 relay and control panels was constructed. The project required installation of over 300 drilled pier foundations ranging in size from 30 inches to 9-feet in diameter. The Technical Services Division was responsible for testing and commissioning the station.
