Georgia Power commences construction of 200MW BESS

by Linda

The 200MW system aims to rapidly dispatch stored energy over a four-hour period, enhancing the reliability and resilience of the electric grid. Credit: harhar38/Shutterstock.com.

Georgia Power has initiated the construction of a 200MW (megawatt) battery energy storage system (BESS) in Twiggs County, southeast of Macon in the US state.

The project, approved by the Georgia Public Service Commission (PSC) for construction on 4 September 2025, emerged from competitive processes linked to the 2023 Integrated Resource Plan (IRP) Update.

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The new BESS is located adjacent to the existing Twiggs County solar facility.

The 200MW system aims to rapidly dispatch stored energy over a four-hour period, enhancing the reliability and resilience of the electric grid.

BESS projects improve the efficiency of renewable energy by storing excess power during low-demand periods for use during high-demand times, such as cold winter mornings when solar energy is unavailable. These facilities address power needs identified in the 2023 IRP Update cost-effectively.

Georgia Power senior vice-president and senior production officer Rick Anderson stated: “At Georgia Power, our collaboration with the Georgia PSC and other stakeholders is key to making necessary investments for a reliable and resilient power grid. With the construction of the 200MW BESS in Twiggs County, we will be able to better serve our existing customers and support Georgia’s growth.

“As we expand our energy mix to include more renewable sources, these batteries will play an invaluable role in helping to ensure reliability and flexibility, particularly when renewable sources are not available.”

The Twiggs BESS, constructed by Crowder Industrial Construction, is expected to be completed in 2027.

Construction is ongoing for four further BESS facilities totalling 765MW across Bibb, Cherokee, Floyd and Lowndes counties, with completion anticipated in 2026. These projects were also approved in the 2023 IRP Update.

Georgia Power is seeking approval from the Georgia PSC for ten new BESS facilities with a combined capacity of 3,022.5MW and two new solar systems combined with BESS totalling 350MW.

Selection of location for these systems was based on deployment capabilities, including proximity to existing company plant sites and substations.

Additionally, Georgia Power is inviting bids for an extra 500MW of energy storage Systems (ESS) with a minimum two-hour discharge duration.

The request for proposal, managed by independent evaluator Ascend Analytics on behalf of Georgia Power, will solicit standalone ESS with grid charging capability and ESS coupled with renewable resources.

 The target capacity is 500MW, with a preference for projects to be online by 2031. Bids are due in early 2026.

In September 2025, Georgia Power received approval to proceed with five new utility-scale solar power purchase agreements, contributing a combined 1,068MW to the US state’s renewable energy capacity.

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