The New York Independent System Operator (NYISO) and Rochester Gas and Electric (RG&E) filed with the Federal Energy Regulatory Commission on March 6 an executed Amended and Restated Small Generator Interconnection Agreement for an uprated hydropower facility of RG&E.
The amended agreement supersedes an SGIA between the NYISO and RG&E that was filed and accepted in 2012. It covers the Brown’s Race (formerly known as RG&E Station 2) hydropower plant located at the base of the High Falls on the Genesee River in Rochester, New York. This facility has been operated by RG&E since at least 1960 at a capacity of 6.5 MW. The NYISO and RG&E filed the 2012 agreement in connection with modifications to the facility that increased its capacity to 8.5 MW. That 2012 agreement specified that the Point of Interconnection would be located at the 11.5 kV bus tap at breaker 65202 of the RG&E Station 6 Substation.
Subsequent to the execution of that agreement, RG&E proposed a two-phase set of additional modifications to the facility, which are covered by this new SGIA: to relocate the Point of Interconnection for the facility; and to expand the facility from 8.5 MW to 14.8 MW. The uprate involves installation of a Unit 2 to be operating in 2019.
The facility initially consisted of one Allis-Chalmers synchronous hydroelectric turbine-generator (Unit 1) with an original nameplate rating of 6.5 MW. In 2011, RG&E modified Unit 1 to uprate it as a Weir American Hydro-Monarch synchronous hydroelectric turbine-generator with a combined (turbine limited) nameplate of 8.5 MW.
The next changes are in two phases:
- In Phase 1, RG&E is relocating the Point of Interconnection to the RG&E 11.5 kV electric system at the 4X bus tie at Station 137, between the 4XA and 4XB reactors.
- In Phase 2, RG&E is adding one Andritz Hydro synchronous hydroelectric turbine-generator (Unit 2), with a nameplate capacity of 6.3 MW.