Interconnect filed for huge RE Gaskell West solar/battery project in California

The commercial operation target date for the Gaskell West Project is June 11, 2018

Southern California Edison on April 19 filed with the Federal Energy Regulatory Commission a Large Generator Interconnection Agreement (LGIA) with RE Gaskell West LLC and interconnecting transmission operator the California Independent System Operator (CAISO).

RE Gaskell West wants to interconnect its proposed 131.2 MW (gross) solar photovoltaic facility and 125 MW (gross) battery energy storage facility to be located in Rosamond, California. The Gaskell West Project would interconect to the 220-kV bus at Southern California Edison’s Whirlwind 220-kV Substation and transmit energy to the CAISO-controlled grid. The proposed commercial operation date for the Gaskell West Project is June 11, 2018.

The LGIA describes the project as: "All equipment and facilities comprising the Interconnection Customer’s 131.2 MW (gross) solar photovoltaic and 125 MW (gross) battery energy storage Gaskell West generating facility in Rosamond, California, as disclosed by the Interconnection Customer in its Interconnection Request, as may have been amended during the Interconnection Study process. While the Generating Facility has the capability of producing 253.075 MW (gross) from both the solar photovoltaic and battery energy storage facilities the Interconnection Customer requested a maximum 128.075 MW from the combined solar photovoltaic and battery energy storage facilities as metered as the Point of Interconnection. The Interconnection Customer will need to install or demonstrate that a control system will be put in place which will manage the combined solar photovoltaic and battery energy storage output to not exceed 128.37 MW (net) as measured at the high side of the main transformer banks in order to ensure the project does not exceed the maximum requested 128.075 MW Point of Interconnection delivery amount, which takes into account the expected losses on the shared generation tie lines when only this project is dispatched.

"The Large Generating Facility is to be interconnected to the Participating [transmission owner's] Whirlwind Substation via a shared gen-tie with the TOT573 (Q746) Project and the TOT672 (Q971) Project, as shown in the diagram below. The Large Generating Facility consists of (i) one hundred and sixty-four (164) SMA 800 inverter units (with an individual output of 0.8 MW each) for a total gross output for the solar photovoltaic portion of the generating facility of 131.2 MW at the inverter terminal, and two-hundred and fifty (250) SMA 500 inverter units (with an individual output of 0.5 MW each) for a total gross output for the battery energy storage portion of the generating facility of 125 MW at the inverter terminal, (ii) distribution feeders used to collect the gross output from the individual inverters, (iii) an estimated auxiliary load for both the solar photovoltaic and battery energy storage portion of 3.125 MW at 34.5 kV, (iv) the associated infrastructure and step-up transformers, (v) meters and metering equipment, and (vi) appurtenant equipment."

A project contact is: RE Gaskell West LLC, Todd Johansen, Manager, West Region Development, 300 California St., 7th Floor, San Francisco, CA 94104, todd.johansen@recurrentenergy.com. That is contact information for power project developer Recurrent Energy.

Barry Cassell
About the Author

Barry Cassell

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 26 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.

Barry can be reached at barryc@pennwell.com.