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Hydrostor is amending its 200MW/1,600MWh power purchase agreement for the Willow Rock project with Central Coast Community Energy, requesting a price change and a 13-month delay. The project, which has faced design reevaluations, is now expected to be shovel-ready in 2026 following final permitting approval.

Meanwhile, Hawaiian Electric will begin construction of the 40MW/160MWh Waena Battery Energy Storage System (BESS) in January 2024, aimed at supporting renewable energy goals by 2045. The project, approved by the public utilities commission, will connect to the Waena Switchyard and aid in phasing out the Kahului Power Plant. In Texas, Peregrine Energy Solutions and Wärtsilä are progressing on the 250MW/500MWh Mallard Energy Storage project near Dallas, which will utilize Wärtsilä's Quantum2 technology and aims to enhance the Electric Reliability Council of Texas system.