Mannum BESS
The Mannum Battery Energy Storage System (BESS) commenced operations in 2025, further supporting South Australia’s energy security.
Asset snapshot
Project name: Mannum Battery Energy Storage System (BESS)
Location: Mannum, South Australia
Nameplate capacity: 100MW / 200MWh
Year commissioned: 2025
Number of homes powered: 16,000 per day
About Mannum BESS
The Mannum BESS is located alongside Epic’s two solar farms at the Mannum Energy Park with its own separate grid connection.
The BESS stores excess renewable energy to supply to the electricity grid during peak demand periods, supporting consistency of renewable energy supply. This means a cleaner, more reliable power grid for South Australians.
The BESS can send 100 megawatts of power into the electricity grid for up to two hours – enough to power about 16,000 South Australian homes each day.
The project was delivered by e-STORAGE, who also provided the battery components, and Adelaide-based specialist Consolidated Power Projects.
Epic Energy oversaw construction and will continue to own and operate the BESS.
Community Investment
Epic Energy is proud to have supported a significant lighting upgrade at the Mannum Oval Complex and Showground – an initiative that reflects our ongoing commitment to supporting the regions in which we operate.
Read more about our contribution to the project here.