PJM Interconnection has posted an August 2014 System Impact Study performed on behalf of interconnecting transmission owner West Penn Power in response to a request by Tenaska Inc. for the interconnection of the Rhodes Lane 500 kV Project.
The project will be a 1,065-MW combined cycle natural gas facility featuring two combustion turbines of 387 MW (gross) apiece and one steam turbine generator of 369 MW (gross) in size. For purposes of this report, the facility has been designated as the “Rhodes Lane Y2-080 Project” to reflect its proximity to West Penn Power’s Rhodes Lane 500-kV Substation and the queue number assigned by PJM.
The primary point of interconnection for the project will be accomplished by building a new 500-kV terminal at the Rhodes Lane Substation by adding a fourth breaker and providing a 500-kV meter package. Tenaska will be responsible for acquiring all easements, properties and permits that may be required to construct both the new 500-kV line and the associated attachment facilities, the study noted.
“The Queue Project #Y2-080 was studied as a 1065.0 MW (Capacity 1065.0 MW) injection into the T-174 500 kV substation (tap of the Yukon-Browns Run 500 kV line) in the AP area,” the study noted. “Project #Y2-080 was evaluated for compliance with reliability criteria for summer peak conditions in 2016.”
A map in the study shows the project site is just south of Yukon in Westmoreland County, which is southeast of and near Pittsburgh. The PJM website shows this project entered the queue in October 2012 and that it has a current commercial operation target of the second quarter of 2017.
Notable is that PJM filed with the Federal Energy Regulatory Commission on July 24 an executed interconnection service agreement (ISA) for a 930-MW, gas-fired power project of Tenaska Pennsylvania Partners LLC that is due on-line in 2018 and has a different queue number, T174. The ISA is among PJM, Tenaska Pennsylvania and interconnecting transmission owner West Penn Power.
“The Tenaska Pennsylvania ISA facilitates the interconnection to the PJM transmission system of a 930 MW generating facility located in Smithton, Pennsylvania,” said the filing. “The Tenaska Pennsylvania ISA indicates that Tenaska Pennsylvania shall have Capacity Interconnection Rights in the amount of 900 MW.”
This ISA covers the planned Smithton Generating Station in Westmoreland County. It will be a 2×1 combined cycle facility. Under the ISA, on or before June 1, 2018, Tenaska Pennsylvania must demonstrate commercial operation of all generating units.