A new 65 megawatt battery energy storage system named Mossy Branch Energy Facility in Talbot County is live. It features 6,700 batteries in 208 gray enclosures on 2.5 acres that store energy from the grid and provide energy when it''s needed during peak demand.
"On a cloudy day like today, our solar assets are not putting out 100% if you hear the beautiful hum behind us these batteries are being charged by the grid and when we need them they can be discharged back onto the grid," Kim Greene, CEO and president of Georgia Power, said to a group of local leaders at the Mossy Branch BESS facility opening. "It''s a wonderful asset."
Georgia Power executives, members of the Public Service Commission, and local leaders from Talbot and Muscogee counties were present for the battery plant''s ribbon-cutting. Credit: Mike Haskey / Ledger-Enquirer
Tim Echols, Public Service Commissioner, and Kim Greene, CEO/President of Georgia Power, shake hands at the opening of the Mossy Branch Energy Facility in Talbot County. Credit: Kala Hunter / Ledger-Enquirer
"This (Mossy Branch BESS facility) will help us enhance reliability and resilience from years to come," said Rick Anderson, senior vice president of Georgia Power''s east production group. "This will help through peak power demands or unforeseen disruptions — this where we''re standing — this is where it''s at."
"Coal assets take 10 to 15 megawatts per minute to ramp up, combustion turbine 40 to 60 megawatts per minute, this site takes 0.175 seconds to ramp up," he said. "It''s instantaneous."
Rick Anderson is a senior vice president of the East Production Group at Georgia Power who managed the Mossy Branch Energy Facility BESS project. Credit: Kala Hunter / Ledger-Enquirer
"We shouldn''t think of this as just a backup spot, right?" he asked. "We should think of this as an integrated function of a grid, it''s just as involved as a hydro dam or coal plant?"
Inside the enclosures are rows of black rectangular boxes and orange cords. They thread together to store and convert DC and AC currents to transformers and substations. The design, engineering and procurement was done by Wärtsilä, a Finnish company.
Inside the enclosure it is completely temperature controlled so it can stay cool on very hot Georgia days or warm on the colder days. There were no safety incidents during the years-long construction, according to Fitzgerald.
Sybelle Fitzgerlad, left, is Georgia Power Mossy Branch Energy Facility project manager, and Raheem Mahamdeh is the commissioning lead engineer for Wärtsilä. Credit: Kala Hunter / Ledger-Enquirer
Lots of geotechnical analysis, 100-year flood analysis, soil analysis, and drilling into the ground was done to ensure these are safe from extreme weather, she said.
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