Grande Prairie Generation Inc. (GPG), a wholly-owned subsidiary of Exelon Corp. (NYSE: EXC), applied March 30 at the Alberta Utilities Commission to remove an operational constraint at its Northern Prairie Power Plant.
The plant operates a General Electric (GE) Model MS7001/EA (Frame 7EA) natural gas-fired turbine. The turbine-generator has a nominal output of 85 MW. It is capable of generating 105 MW of electricity under its current configuration; however, constraints on the electric system limit the generator output to 99 MW.
GPG has applied to the Alberta Electric System Operator (AESO) to remove the operating constraints. Authorization from AESO is expected in June 2015. Once the generating constraints issued by AESO are removed, GPG is seeking authorization to operate the turbine-generator at the maximum generating capacity of 105 MW. The requested change is purely administrative in nature as there will be no change to the design of the plant.
The plant has undergone combustion controls tuning and is now capable of achieving a maximum capability of 105 MW during periods when ambient temperatures are at or below -20 degrees Celsius.