Energy Vault, a leader in sustainable energy storage solutions worldwide, announced a contract with Consumers Energy, the biggest energy supplier in Michigan, for the provision of two 75 MW/300 MWh battery energy storage systems (BESS). The counties of Iosco and Bay will host the BESS deployments. It is anticipated that battery supplies will start in Q4 2025, construction will start in Q1 2026, and commercial operation will start in Q4 2026.
The 45 MW/180 MWh Weadock BESS in Hampton Township will be located close to the site of the now-defunct John C. Weadock Power Plant. In Oscoda Township, the Iosco County BESS will be situated at 30 MW/120 MWh. Vigorous local permitting activities, coordinated with township officials, are supporting the project development. Each day, both BESS deployments will be charged and discharged. They are intended to deliver stored renewable energy during periods of high consumption to assist in meeting Michigan’s energy needs.
“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 help meet peak demand with energy and exemplify how advanced storage technologies can support grid resilience at scale,” stated Marco Terruzzin, Chief Revenue Officer, Energy Vault. “This contract marks Energy Vault’s continued expansion across the US with a leading Midwest utility partner committed to delivering sustainable energy at scale—and it lays the foundation for a long-term strategic partnership focused on enabling a more resilient and sustainable energy future for Michigan and beyond.”
“Battery storage will continue to play a larger role as Consumers Energy meets Michigan’s growing energy needs. We’re excited to collaborate with Energy Vault to bring these two projects to life in the communities we serve,” stated Sri Maddipati, Consumers Energy’s president of electric supply.
Energy Vault’s B-VAULTTM suite of fully integrated battery storage solutions will be used to develop the BESS deployments. Energy Vault’s proprietary X-Vault integration platform and Vault-OS Energy Management System will be used to control, manage, and optimize the BESS operations, enabling superior energy management capabilities. Unique AC-coupled and DC-coupled configurations offer the drop-in flexibility required for any project, while Energy Vault’s cutting-edge system architecture gives customers options with regard to both battery and inverter vendors.
The news is a step forward for Energy Vault’s expanding commercial presence in the global battery storage market. To date, the company’s B-VAULT portfolio has more than 2 GWh of deployed or under-development projects.
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