Wedoany.com Report-Dec.27, The Massachusetts Department of Energy Resources (DOER) has announced the winners of its first energy storage procurement under Section 83E. The state selected four large-scale battery storage projects with a combined capacity of 1,268 megawatts (MW). This selection supports the legislative goal of achieving 5,000 MW of operational energy storage capacity by July 2030.

The procurement process, which began in July 2025, aimed to secure up to 1,500 MW of mid-duration storage through competitive bidding. A total of 13 proposals were submitted, and the chosen projects will now proceed to formal contract negotiations with the state's electric distribution companies, including Eversource, National Grid, and Unitil. These long-term agreements are expected to provide financial certainty and facilitate project development, with commercial operations targeted for as early as 2030.

Among the selected projects is Jupiter Power’s Trimount ESS. This facility will be located at a former 100-year-old Exxon oil terminal site in Everett, Massachusetts. The redevelopment transforms legacy fossil fuel infrastructure into a hub for clean energy solutions. By utilizing existing grid connections near the Mystic substation, the project helps integrate renewable resources effectively.

The Trimount ESS is anticipated to defer approximately $2.2 billion in regional transmission upgrades that would otherwise be needed to support growing energy demands in the area. This cost-saving benefit arises from the storage system's ability to manage peak loads, provide grid stability, and reduce the need for extensive new transmission lines in Greater Boston and surrounding regions.

The initiative contributes to broader objectives of enhancing grid reliability, supporting renewable energy integration, and promoting sustainable infrastructure use. Repurposing the contaminated industrial site also aligns with efforts to remediate historical environmental impacts while advancing modern energy systems.

This first round marks an important step in Massachusetts' strategy to expand energy storage capabilities. Future solicitations will continue to build toward the 2030 target, addressing increasing needs for flexible, dispatchable resources in the regional electricity market.

Overall, the announcement reflects steady progress in developing large-scale storage projects that strengthen energy infrastructure and deliver economic and operational advantages.