Duke Energy Deploys 50-MW Battery at Allen Coal Plant, Plans 167-MW Expansion
ByAinvest
Wednesday, Jan 14, 2026 10:21 pm ET1min read
DUK--
Duke Energy has brought a 50-MW grid battery online at its retired Allen coal plant on Lake Wylie, marking a major step in repurposing legacy fossil fuel infrastructure for grid-scale storage. The project cost approximately $100 million and will be joined by a 167-MW battery installation. Both projects qualify for federal investment tax credits, which will directly reduce costs for customers. Utility-scale battery storage is becoming a critical reliability tool as electricity demand accelerates and renewable generation expands.
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