--- title: xAI is running 59 unpermitted gas turbines, twice what... description: Regulatory emails reveal xAI is operating 59 unpermitted gas turbines to power its Colossus 2 data center — roughly double the 27 the company publicly... canonical: https://daily.dev/posts/xai-is-running-59-unpermitted-gas-turbines-twice-what-it-has-admitted-o8vptwvtr twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: xAI is running 59 unpermitted gas turbines, twice what it has admitted | daily.dev og:description: Regulatory emails reveal xAI is operating 59 unpermitted gas turbines to power its Colossus 2 data center — roughly double the 27 the company publicly... og:url: https://daily.dev/posts/xai-is-running-59-unpermitted-gas-turbines-twice-what-it-has-admitted-o8vptwvtr og:image: https://api.daily.dev/og/posts/o8VpTwVTr.png og:image:alt: xAI is running 59 unpermitted gas turbines, twice what it has admitted og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # xAI is running 59 unpermitted gas turbines, twice what it has admitted **[The Next Web](https://daily.dev/sources/tnw)** · 4 min read · 0 upvotes · 0 comments ## Summary Regulatory emails reveal xAI is operating 59 unpermitted gas turbines to power its Colossus 2 data center — roughly double the 27 the company publicly acknowledged in January. At least 57 of the turbines are located in Southaven, Mississippi, just across the Tennessee state line, where neighboring residents have no standing in permitting proceedings. Emissions calculations from manufacturer profiles suggest the turbines could emit nearly 2,500 short tons of nitrogen oxides annually from just 30 units, far exceeding the Clean Air Act threshold of 100 tons that triggers federal permitting. The surrounding communities are disproportionately Black, with asthma and COPD rates above county averages in nearly all nearby census tracts. xAI and Mississippi regulators argue the turbines are exempt as mobile/temporary units. The NAACP and Southern Environmental Law Center have sued to halt operations, while the Justice Department intervened on xAI's side citing national security grounds related to Grok's support of US military operations. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How many unpermitted gas turbines is xAI running for its Colossus 2 data center? xAI is running 59 unpermitted gas turbines for Colossus 2, roughly double the 27 the company publicly acknowledged in January. At least 57 sit in Southaven, Mississippi, just over the state line from the Memphis, Tennessee data center, while two more were installed at an unidentified site. None holds a federal clean air permit. _Follow daily.dev for continuing coverage of how AI data center buildouts collide with environmental regulation._ ### What emissions threshold triggers federal Clean Air Act permitting for gas turbines? The Clean Air Act requires federal permitting once a facility's potential emissions reach 100 short tons per year of a regulated pollutant. Reuters calculated that just 30 of xAI's Southaven turbines could emit close to 2,500 short tons of nitrogen oxides annually, 4,000 tons of carbon monoxide, and 22 tons of formaldehyde at typical operating loads, far exceeding that threshold. _Engineers weighing data center power tradeoffs can track regulatory scrutiny like this on daily.dev._ ## Similar posts on daily.dev - [Musk’s xAI is running nearly 50 gas turbines unchecked at its Mississippi data center](https://daily.dev/posts/musk-s-xai-is-running-nearly-50-gas-turbines-unchecked-at-its-mississippi-data-center-w9c22fmtn) · TechCrunch · 0 upvotes · 0 comments - [illegal solutions, today](https://daily.dev/posts/illegal-solutions-today-njhod5nle) · Hacker News · 0 upvotes · 0 comments - [EPA rules that xAI’s natural gas generators were illegally used](https://daily.dev/posts/epa-rules-that-xai-s-natural-gas-generators-were-illegally-used-fovuc0lcd) · TechCrunch · 0 upvotes · 0 comments - [xAI's polluting turbines are 'vital' to war, DOJ argues](https://daily.dev/posts/xai-s-polluting-turbines-are-vital-to-war-doj-argues-nkwe52tvw) · The Next Web · 0 upvotes · 0 comments - [Musk’s xAI is being sued over its data center generators. Now, it’s buying $2.8B more.](https://daily.dev/posts/musk-s-xai-is-being-sued-over-its-data-center-generators-now-it-s-buying-2-8b-more--dxwxjlkcm) · TechCrunch · 0 upvotes · 0 comments --- Tags: [#sustainability](https://daily.dev/tags/sustainability), [#ai-infrastructure](https://daily.dev/tags/ai-infrastructure) [View this post on daily.dev](https://daily.dev/posts/xai-is-running-59-unpermitted-gas-turbines-twice-what-it-has-admitted-o8vptwvtr) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"xAI is running 59 unpermitted gas turbines, twice what it has admitted","url":"https://daily.dev/posts/xai-is-running-59-unpermitted-gas-turbines-twice-what-it-has-admitted-o8vptwvtr","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/xai-is-running-59-unpermitted-gas-turbines-twice-what-it-has-admitted-o8vptwvtr"},"datePublished":"2026-07-14T13:11:44.273Z","dateModified":"2026-09-14T08:52:27.370Z","description":"Regulatory emails reveal xAI is operating 59 unpermitted gas turbines to power its Colossus 2 data center — roughly double the 27 the company publicly...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/7c1335e835bad06900b9b4aae276f2d5?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/7c1335e835bad06900b9b4aae276f2d5?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"The Next Web","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"The Next Web","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/tnw","url":"https://daily.dev/sources/tnw"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/xai-is-running-59-unpermitted-gas-turbines-twice-what-it-has-admitted-o8vptwvtr","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"sustainability,ai-infrastructure","timeRequired":"PT4M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"The Next Web","item":"https://daily.dev/sources/tnw"},{"@type":"ListItem","position":3,"name":"xAI is running 59 unpermitted gas turbines, twice what it has admitted"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/xai-is-running-59-unpermitted-gas-turbines-twice-what-it-has-admitted-o8vptwvtr#faq","mainEntity":[{"@type":"Question","name":"How many unpermitted gas turbines is xAI running for its Colossus 2 data center?","acceptedAnswer":{"@type":"Answer","text":"xAI is running 59 unpermitted gas turbines for Colossus 2, roughly double the 27 the company publicly acknowledged in January. At least 57 sit in Southaven, Mississippi, just over the state line from the Memphis, Tennessee data center, while two more were installed at an unidentified site. None holds a federal clean air permit. Follow daily.dev for continuing coverage of how AI data center buildouts collide with environmental regulation."}},{"@type":"Question","name":"What emissions threshold triggers federal Clean Air Act permitting for gas turbines?","acceptedAnswer":{"@type":"Answer","text":"The Clean Air Act requires federal permitting once a facility's potential emissions reach 100 short tons per year of a regulated pollutant. Reuters calculated that just 30 of xAI's Southaven turbines could emit close to 2,500 short tons of nitrogen oxides annually, 4,000 tons of carbon monoxide, and 22 tons of formaldehyde at typical operating loads, far exceeding that threshold. Engineers weighing data center power tradeoffs can track regulatory scrutiny like this on daily.dev."}}]} ```