Sunray Energy to repower solar facility in California

Southern California Edison on Dec. 23 filed with the Federal Energy Regulatory Commission a Generator Interconnection Agreement with Sunray Energy LLC that covers the planned repowering of an existing solar facility.

Sunray Energy owns a 13.8 MW (net) solar thermal, parabolic trough facility named the SEGS I Project, located in Daggett, California. It is interconnected to SCE’s system at a tap on the Luz 33-kV distribution line out of the Gale 115/33 kV Substation.

Sunray Energy has been selling the capacity and energy produced by the project entirely to SCE under an amended power purchase agreement (PPA) subject to the jurisdiction of the California Public Utilities Commission (CPUC) dated June 14, 1985. The PPA includes an interconnection facilities agreement (IFA). The parties have agreed to terminate the IFA effective at midnight on Dec. 31, 2015, and to establish other interconnection arrangements.

Sunray Energy will replace the existing solar thermal technology and steam-turbine generator with inverter-based photovoltaic technology. SCE issued a repower study report on Feb. 12, 2015, as amended on May 28, 2015, that concluded that the capability and electrical characteristics of the facility will be substantially unchanged by the repower project.

The service greement sets forth SCE’s agreement to provide distribution service for 13.8 MW of power produced by the oroject to the California ISO grid at SCE’s 115 kV bus at the Cool Water Substation.

Said the agreement: “As part of the Repower of the existing Generating Facility, the Interconnection Customer shall decommission and disconnect the existing steam-turbine generator. The Interconnection Customer shall not operate the existing Generating Facility in parallel with any portion or component of the Repower of the Generating Facility. Upon Commercial Operation of the Repower of the Generating Facility, the existing steam-turbine generator shall not be eligible for interconnection under this GIA and the Interconnection Customer shall not operate such steam-turbine generator in parallel with the Repower of the Large Generating Facility.”

A project contact is: William Felts, Vice President, Sunray Energy LLC,, 9405 Arrowpoint Boulevard, Charlotte, NC, 28273.

About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.