Energy Vault has entered into an agreement with Michigan energy provider Consumers Energy to provide two battery energy storage systems (BESS) totaling 75 MW/300 MWh in Iosco and Bay Counties.
The 45 MW/180 MWh Weadock BESS will be located at the site of the retired John C. Weadock Power Plant in Hampton Township; the 30 MW/120 MWh Iosco County BESS will be in Oscada Township. Permitting efforts are currently underway along with township officials supporting the project’s development.
Each BESS will be charged and discharged daily, designed to dispatch stored energy to help meet Michigan’s energy demand during peak consumption hours.
The battery systems will be developed under Energy Vault’s B-VAULT™ suite of fully integrated battery energy storage solutions, leveraging the company’s proprietary X-Vault integration platform and Vault-OS Energy Management System.
“As the energy transition accelerates, utilities like Consumers Energy are stepping up to ensure grid reliability while integrating more renewable energy. We are proud to partner with Michigan’s largest energy provider on these critical projects, which will not only help meet peak demand with energy but also exemplify how advanced storage technologies can support grid resilience at scale,” said Marco Terruzzin Chief Revenue Officer, Energy Vault, in a statement.
Both battery deliveries are expected to take place in Q4 2025, while construction is scheduled to begin in Q1 2026. Commercial operations are expected by Q4 2026.
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