Musk’s xAI to build small solar farm adjacent to Colossus data center

Artificial intelligence startup xAI, founded by Elon Musk, told city and county planners in Memphis last week that it plans to build a solar farm next to its Colossus data center — one of the world’s largest facilities for training AI models. The project would occupy 88 acres to the west and to the south of the data center. A 136-acre vacant lot owned by the developer that also owns the Colossus property currently borders the site. Given the proposed size, the solar farm would likely produce around 30 megawatts of electricity, only about 10% of the data center’sestimated power use. Musk’s company has come under fire for operating over400 megawatts of natural gas turbineswithout permits, according to the Southern Environmental Law Center (SELC). The legal organization, which is working with the NAACP, says that xAI has operated at least 35 turbines capable of emitting more than 2,000 tons of NOXpollution — nitrogen oxide emissions that contribute to smog and respiratory problems — annually. The turbines have sparked fierce opposition from residents in nearby Boxtown, a predominantly Black community where researchers at the University of Tennessee, Knoxville, found that peak nitrogen dioxide concentration levelsincreased by 79%in areas immediately surrounding the data center after xAI began operations. Community activists have reported increased asthma attacks and respiratory issues since the facility opened. The AI company has said that it intends to use the turbines until it can secure additional power, but local officials gave xAI a permit tooperate 15turbines through January 2027. In September, xAI said it would build a100-megawatt solar farmnearby, which will be paired with 100 megawatts of grid-scale batteries to provide a 24/7 source of electricity. The company hasn’t disclosed the total cost of that project, but the solar farm’s developer, Seven States Power Corporation, was awarded $439 million from the U.S. Department of Agriculture. Of that, $414 million is an interest-free loan. The federal award is notable given that many clean energy grants and loans have been canceled by theEnvironmental Protection Agencyand theDepartment of Energyunder the Trump administration. Meanwhile, xAI has added gas turbines in Mississippi to power its Colossus 2 data center. So far,59 of them are on-site, and the company considers 18 of them temporary, meaning that regulators don’t track their pollution. Topics Senior Reporter, Climate Tim De Chant is a senior climate reporter at TechCrunch. He has written for a wide range of publications, including Wired magazine, the Chicago Tribune, Ars Technica, The Wire China, and NOVA Next, where he was founding editor. De Chant is also a lecturer in MIT’s Graduate Program in Science Writing, and he was awarded a Knight Science Journalism Fellowship at MIT in 2018, during which time he studied climate technologies and explored new business models for journalism. He received his PhD in environmental science, policy, and management from the University of California, Berkeley, and his BA degree in environmental studies, English, and biology from St. Olaf College. You can contact or verify outreach from Tim by [email protected]. StrictlyVC concludes its 2025 series with an exclusive event featuring insights from leading VCs and builders such as Pat Gelsinger, Mina Fahmi, and more. Plus, opportunities to forge meaningful connections. Anduril’s autonomous weapons stumble in tests and combat, WSJ reports This Thanksgiving’s real drama may be Michael Burry versus Nvidia The future will be explained to you in Palo Alto Why ‘hold forever’ investors are snapping up venture capital ‘zombies’ Altman describes OpenAI’s forthcoming AI device as more peaceful and calm than the iPhone OpenAI learned the hard way that Cameo trademarked the word ‘cameo’ US banks scramble to assess data theft after hackers breach financial tech firm