American Electric Power Service Corp., on behalf of its affiliate AEP Texas Central Co. (TCC), filed with the Federal Energy Regulatory Commission on March 4 a fully executed ERCOT Standard Generation Interconnection Agreement with South Texas Electric Cooperative for a 225-MW power project.
The agreement provides for the electrical interconnection of the cooperative’s planned 225-MW generation facility, which will be comprised of 12 natural gas reciprocating units of about 18.8 MW of nominal capacity each.
The cooperative’s Red Gate Substation will be located in Hidalgo County about 7.5 miles north of Edinburg, Texas. The Substation will interconnect at a temporary location on TCC’s Falfurrias to North Edinburg 138 kV transmission line. The interconnection will require the cooperative to build a quarter mile of 138 kV transmission line between the Substation and the temporary location. TCC will be required to hard-tap the cooperative’s 138 kV transmission line at the temporary location while TCC double circuits approximately 7.5 miles of 138 kV transmission line from the temporary location to the North Edinburg station.
The U.S. Environmental Protection Agency’s Region 6 office on Feb. 19 issued to South Texas Electric Cooperative a federal greenhouse gas (GHG) permit for this project. This will be a peaking facility. Its 12 new natural gas-fired engines will provide a fast ramp-up for electricity generation at a capacity of approximately 225 MW. The project will bring a $200 million investment and is anticipated to add approximately 250 temporary and 29 permanent jobs to the McAllen area.
The Red Gate project would consist of twelve Wartsila natural gas-fired engines (Model 18V50SG) and associated equipment including a firewater pump engine, circuit breakers and a diesel-fired emergency generator.