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Authority overseeing new Calif. municipal utility executes agreement tied to microgrid

October 28, 2020

by Paul Ciampoli
APPA News Director
October 28, 2020

Concentric Power Inc. and Gonzales Electric Authority (GEA), which was established by the City of Gonzales, Calif., to oversee its new municipal electric utility, have executed an energy services agreement to deliver wholesale electric power via a community-scale microgrid.

The microgrid will initially have 35 megawatts of capacity to provide power to the Gonzales Agricultural Industrial Business Park, which houses processing facilities for fresh vegetable and wine producers. It will also meet the clean energy requirements of the city’s climate action plan.

Concentric Power said in an Oct. 7 news release that it designed the microgrid to integrate a mix of 14.5-MW-AC of solar energy, 10-MW/27.5 MWh of battery energy storage and 10-MW of flexible thermal generation, all of which will be managed by the company’s Advanced Microgrid Controller.

The system will allow the park to island from the wider energy grid, “ensuring that end users have reliable, high-quality power 24 hours a day, 365 days a year, even when facing planned or unplanned grid outages,” Concentric Power said.

The microgrid will also include a privately owned substation that will allow energy and capacity services to be sold into the California electricity grid.

The City of Gonzales, which is located California’s Salinas Valley, formed GEA to help attract and retain a strong agriculture and industrial base as well as to protect companies doing business there from unplanned power outages and poor power quality, Concentric Power noted.

The project will support continued economic development and job creation to further build the city’s tax base. With the Agricultural Industrial Park currently one-third occupied, the ESA allows for the power infrastructure to expand and meet growing demand.

The $70 million project will be funded primarily by Concentric Power, with supplemental funding from GEA and the Gonzales Municipal Electric Utility towards ownership of the distribution infrastructure.

Concentric Power will develop, design, build, operate and maintain the microgrid assets, including both generation and distribution. The distribution assets will be transferred to Gonzales Municipal Electric Utility.

The initial term of the energy services agreement is 30 years and the project is expected to break ground in mid-2021 and be ready for service in 2022.

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