Mississippi Board Upholds SpaceXAI’s Permit for 41 Southaven Gas Turbines

Mississippi regulators have upheld the air permit for SpaceXAI’s 41-turbine power plant in Southaven, giving the company a win in an administrative challenge over the energy supply for its growing AI operations. The decision keeps an earlier approval in place while a separate federal lawsuit over turbines already operating at the site continues.

The Mississippi Environmental Quality Permit Board made its decision on Tuesday, November 10, after two days of testimony in Jackson. The hearing reviewed whether the board should reconsider the permit issued in March to MZX Tech LLC, a SpaceXAI subsidiary.

The board’s original approval covered 41 Southaven gas turbines. The plant at 2875 Stanton Road is intended to supply the company’s data-center operations on both sides of the Mississippi-Tennessee border, including Colossus 2.

The Southern Environmental Law Center challenged the permit on behalf of the NAACP, Safe and Sound Coalition, and Young Gifted & Green. The groups argue that the pollution modeling understated nearby sources and that the permit should require emissions reductions elsewhere to offset the plant’s impact.

Those claims remain disputed. At the March meeting, MDEQ staff said the project could comply with state and federal requirements under the proposed permit. Staff also said emissions-offset rules did not apply because the area was classified as meeting the relevant air-quality standards. The agency’s signed meeting minutes record that position.

SELC confirmed the appeal outcome in a November 11 statement. The Daily Memphian also reported that the board stood by its earlier decision.

The construction-permit appeal is separate from the NAACP’s Clean Air Act case in the U.S. District Court for the Northern District of Mississippi. That lawsuit concerns allegedly unpermitted turbines already running at the site, and Tuesday’s board decision does not resolve it.

How should regulators balance the power needs of expanding AI data centers with concerns from nearby residents?