Michigan approves 1.3 GW BESS portfolio, including contested Oracle data center assets

Approved DTE Electric storage facilities include one asset backed by a 20-year tolling agreement, two self-build contracts and three batteries to serve an Oracle-owned data center. The energy regulator has denied a petition from the state’s attorney general to revisit BESS approvals.

April 1, 2026 Blathnaid O'Dea

Image: Pixabay

From ESS News

The Michigan Public Services Commission (MPSC) has approved six energy storage projects with 1.3 GW cumulative power output.

Three of the projects approved by Michigan’s energy and utility regulator will provide combined power output of 1 GW, fulfilling developer DTE Electric Co’s energy storage obligations to the state. The remaining 332 MW of approved BESS is spread across three projects which will support a 1.3 GW data center being developed by Green Chile Ventures – a subsidiary of software and technology company Oracle.

Regulator approval for the Oracle data center BESS assets has been contested in Michigan, with the state’s attorney general and a number of campaign groups seeking a review of DTE Electric Co’s data center contracts. The motion from the state’s top lawyer was denied by MPSC, who said the attorney general and other petitioners “lacked standing” to petition for a rehearing. Attorney general Dana Nessel said the MPSC was performing a “grave disservice” to the state of Michigan.

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