Mississippi utility regulators have moved two Delta energy-storage proposals into formal review, holding separate hearings Sept. 23 on projects planned for Washington and Tallahatchie counties. The proceedings give the Public Service Commission a central role in deciding whether the Greer and Wildwood facilities may be constructed and operated, while environmental and federal interconnection records show both projects are also advancing through other regulatory channels.
The Greer notice scheduled a hearing in Jackson on docket 2025-UA-120. The commission’s docket record says Greer Energy Storage LLC filed its petition Dec. 19, 2025, seeking a certificate of public convenience and necessity for a storage facility in Washington County. The docket identifies the requested authority as permission to construct and operate; it does not, by itself, establish that final approval has been granted.
State environmental records place the Greer site on Treadway Road in Hollandale. The Mississippi Department of Environmental Quality’s facility page lists the project under the stormwater branch with an Aug. 7, 2026, start date, while the agency’s recently received notices list Greer for construction coverage. Those records address environmental permitting and site work, a separate process from the commission’s utility siting decision.
The Wildwood notice set a hearing the same day for docket 2025-UA-124. The commission record says Wildwood Energy Storage LLC filed Dec. 29, 2025, for permission to construct and operate a storage facility in Tallahatchie County. MDEQ’s permit list identifies it as the Wildwood battery energy storage system in Tutwiler and shows a construction-coverage notice.
A federal filing adds another layer to Greer’s timeline. In a Sept. 21 notice, the Federal Energy Regulatory Commission listed a Midcontinent Independent System Operator agreement connecting Entergy Mississippi and Greer Energy Storage. The filing requests an effective date of Sept. 11 and sets an Oct. 13 deadline for comments. An interconnection agreement governs how a project connects to the power system; it is not a substitute for the Mississippi certificate sought in the PSC docket.
The two cases are consequential for the Delta because utility-scale batteries can store electricity and return it to the grid when needed, but they also raise local questions about land use, construction impacts, emergency planning and the terms of grid connection. The hearings create a record on whether each applicant meets Mississippi’s public-convenience standard; environmental coverage and an interconnection filing answer different questions. For residents, the PSC dockets are the clearest place to watch for testimony, conditions and a final state decision. The public records available Friday establish that both proposals reached formal hearings and have active permitting footprints. They do not yet provide a posted final commission order. Until one appears in the dockets, the careful reading is that Greer and Wildwood remain proposed projects under review, not completed facilities.
