# Trump’s DOJ intervenes to keep Musk’s xAI gas turbines polluting Memphis > Source: > Published: 2026-06-17 15:30:49+00:00 The US Department of Justice has asked a federal court to throw out a Clean Air Act lawsuit against Elon Musk’s xAI, arguing that the company’s unpermitted gas turbines near Memphis are a matter of “national, economic, and energy security.” The move puts the Trump administration in court alongside Musk to defend dozens of methane-burning turbines that have been running without air permits in one of the most polluted regions of the country. ## What the lawsuit is about The NAACP, represented by the Southern Environmental Law Center and Earthjustice, sued xAI in April under the federal Clean Air Act. The suit alleges the company is running dozens of gas turbines without the required permits or pollution controls to power its Colossus and Colossus 2 data centers, which train and run Grok, Musk’s AI chatbot, and also now sells compute to Anthropic and Google. The turbines sit in Southaven, Mississippi, just across the state line from the Colossus site in South Memphis, Tennessee. xAI claims the units are exempt from Mississippi air-permitting rules because they are mounted on trailers and classified as “temporary” mobile equipment. The SELC counters that federal law treats trailer-mounted turbines as stationary sources subject to regulation. Since xAI first brought generators to the area last summer, the count has more than doubled to 57. As we [reported in March](https://electrek.co/2026/03/03/elon-musk-xai-data-center-undoing-tesla-climate-gains/), the Memphis turbines emit an estimated 1,200 to 2,000 tons of nitrogen oxides per year, likely making xAI the single largest industrial source of smog-forming pollution across the 11-county Memphis metro. The region already has some of the highest asthma rates in the country. ## The national security argument In a motion filed June 15 by the DOJ’s Environment and Natural Resources Division, the department argued that a win for the NAACP would undermine “American national, economic, and energy security by seeking to shut off the power supply for artificial-intelligence innovation that supports the Department of War’s military operations.” Cameron Stanley, who leads AI for the Defense Department, submitted a declaration calling Grok’s continued availability “a matter of paramount national security.” The filing claims Grok is one of just four AI models cleared for “mission-critical operations,” and that during the recent Iran conflict the Grok Gov model “enabled U.S. forces to deploy over 2,000 munitions to 2,000 distinct targets within 96 hours.” That framing is notable given where Grok actually sits in the AI race. On the major 2026 benchmarks and chatbot leaderboards, Grok trails the leading models from OpenAI, Google, and Anthropic — competitive on a handful of coding tests but behind on reasoning and adoption. The idea that this specific model is so indispensable that a community can’t enforce the Clean Air Act against its power plant deserves scrutiny. The DOJ, xAI, and the state of Mississippi are now jointly asking the court to dismiss the case. A judge has not yet ruled. ## A “massive power grab” The plaintiffs are not backing down. Earthjustice [told CNBC](https://www.cnbc.com/2026/06/16/usdepartment-of-justice-calls-for-dismissal-of-naacp-xai-lawsuit-.html) the “DOJ wants to give itself veto power over citizen suits, a key legal tool used to protect communities from illegal pollution for over 50 years.” The SELC called the intervention a “massive power grab” by the Trump administration. “At a time when the ultra-rich seem to be protected and supported by some of our government entities, it is important that polluting industries don’t get to benefit at the expense of the health of Black communities,” said Abre’ Conner, the NAACP’s director of environmental and climate justice. The legal fight lands at a delicate moment for Musk. xAI is now a division of SpaceX, which merged with the AI company in February and just completed its Nasdaq debut, topping a $2.8 trillion valuation this week. According to SpaceX’s IPO filing, the company plans to buy another $2.8 billion in gas turbines over the next three years, at least $2 billion of it earmarked for “mobile” units — the exact category at the center of this lawsuit. ## Electrek’s Take This is the same playbook we’ve been documenting for over a year, now with the federal government’s thumb on the scale. Musk, who built his fortune on the promise of a “solar electric economy,” is [burning methane to run an AI chatbot](https://electrek.co/2026/05/25/musk-solar-hypocrisy-gas-ai-chatbot-space-solar-spacex-ipo/) and exploiting a “temporary” loophole to skip the air permits everyone else has to get. The EPA closed that loophole in January. The turbines kept running anyway. What’s new and genuinely alarming is the DOJ wrapping all of it in national security. The argument isn’t that the turbines are clean or permitted — it’s that Grok is too important to the military for a Black Mississippi community to be allowed to enforce the Clean Air Act against it. Strip away the framing and the government is asserting it can override citizen environmental suits whenever a billionaire’s project can be linked to a defense contract. That’s the precedent here, and it’s a dangerous one. It’s also worth asking how real the underlying premise is. Grok has fallen behind the leading models from OpenAI, Google, and Anthropic, and the notion that the Pentagon’s operations hinge on this one chatbot is, at minimum, convenient. Musk spent more than $250 million getting Trump elected — the largest political donation of the 2024 cycle — and the administration is now intervening in federal court to protect his data center from environmental enforcement. Whether or not the Defense Department genuinely depends on Grok, it’s fair to wonder whether this filing is less about military readiness and more about a return on that investment. The irony is that this was always a solvable problem. xAI could power Colossus with grid interconnection, batteries, and yes, the [Tesla Megapacks it keeps buying](https://electrek.co/2026/06/04/spacex-xai-269-million-tesla-megapack-purchase-s1-filing/). Instead, the cheapest, dirtiest option is being defended as a matter of “paramount national security.” If the court accepts that logic, what stops the next data center from doing the same? *With electricity rates climbing and AI data centers straining local grids, home solar is one of the smartest ways to insulate yourself from rising costs and dirtier power. With electricity rates climbing nearly 10% last year, home solar protects you against future rate increases. And with lease and PPA options, you can go solar with zero upfront cost and start saving immediately. If you want to find the best deal, check out EnergySage. It’s a free service with hundreds of pre-vetted installers competing for your business, so you save 20 to 30% compared to going it alone. No sales calls until you pick an installer. Get your free quotes here.* *FTC: We use income earning auto affiliate links.* [More.](https://electrek.co/about/#affiliate) [subscribing to Electrek on Google News](https://news.google.com/publications/CAAqBwgKMKqD-Qow6c_gAg?ceid=US:en&oc=3). You’re reading Electrek— experts who break news about [Tesla](https://electrek.co/guides/tesla/), [electric vehicles,](https://electrek.co/best-electric-vehicle-prices/)and [green energy](https://electrek.co/guides/egeb/), day after day. Be sure to check out our [homepage](https://electrek.co/)for all the latest news, and follow Electrek on [YouTube channel](https://youtube.com/c/electrekco)for the latest reviews.