NRG Energy (NYSE: NRG) intends to return, likely this summer, the gas-fired Astoria GT 10 and GT 11 to active operation and remove them from NERC Inactive State-Mothballed status.
In January 2012, Astoria Gas Turbine Power LLC, a subsidiary of NRG Energy, told the New York Public Service Commission of its intent to cease operating Astoria GT 10 and Astoria GT 11 and to place these units into NERC Inactive State-Mothballed, effective May 1, 2012, and July 1, 2012, respectively. These units, which are located in Astoria, Queens, and are interconnected to the Consolidated Edison system in the New York Independent System Operator‘s (NYISO) Zone J, were indeed placed into mothball status on the provided dates, NRG said in a June 7 notice filed at the PSC.
“At the time the notice was filed, the Units had been experiencing increasing operational challenges and had reached a point where NRG determined that a major overhaul would be necessary to restore the Units’ performance to a level that would justify continued operations,” the company explained. “Once the Units were placed in Mothball status which facilitated the completion of a more extensive analysis of the Units’ conditions, NRG determined that the repairs needed were not as extensive as originally estimated. These less costly repairs, coupled with revised operating procedures that will be implemented to overcome some of the operating challenges can now justify returning the Units to an active operating state. NRG intends to return Astoria GT 11 to active operation and remove it from NERC Inactive State-Mothballed, not before June 17, 2013. NRG intends to return Astoria GT 10 to active operation and remove it from NERC Inactive State-Mothballed, not before July 09, 2013.”
NRG simultaneously provided a copy of this June 7 notice to the NYISO and Consolidated Edison.
The original January 2012 notice of the plan to mothball these units said they are Westinghouse gas turbines, each with a nameplate capacity of about 31.8 MW, that went into commercial operation in December 1970.