ElectraNet to carry out grid connection for Mannum Battery

Aerial photo of Mannum Solar Farm where Mannum Battery will be built (electranet)
Mannum Solar Farm site (Image: ElectraNet)

ElectraNet has agreed to connect Epic Energy’s upcoming 100MW/200MWh Mannum Battery Energy Storage System (BESS) to the South Australian grid.

ElectraNet business development manager Claire Pickering said, “Epic’s BESS will be located adjacent to our Mannum substation and their recently established solar farms.”

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“The connection will involve extending an existing 132kV busbar at Mannum substation to facilitate the cable connecting the BESS facility. We look forward to supporting Epic throughout construction of the project and the decades beyond as a valued connected customer of ElectraNet,” Pickering said.

Epic Energy has been involved in the development of the Mannum BESS via development partner Recurrent Energy over the past two years and will be investing approximately $130 million in the project.

Epic Energy general manager major projects delivery Tom Forde said, “Epic Energy was introduced to ElectraNet by development partner Recurrent Energy in mid-2023 for the purpose of negotiating the TCA. ElectraNet were responsive when negotiating this agreement, resulting in a seamless and on schedule process. They were also helpful when responding to queries along the way, which expedited the TCA.”

“Connecting BESS projects of this scale to the National Electricity Grid (NEM) is extremely complex, requiring a high degree of expertise, coordination, and collaboration between Electranet, Recurrent Energy and Epic Energy.

“ElectraNet continues to work alongside Epic Energy to navigate the technical challenges and connection process. We look forward to continuing this strong working relationship with ElectraNet during the future construction and operational phases of the project,” Forde said.

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The Mannum BESS is proposing to use Canadian Solar and e-Storage’s proprietary SolBank battery solution, which is based on lithium iron phosphate (LFP) battery cells, which offers a high level of safety due to its integration of a top-tier active balancing battery management system (BMS) with the product’s thermal management system.

Construction of the Mannum BESS is due to start this year, with expected completion and energisation in the second half of 2025.

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