xAI "MACROHARDRR" data center on Stateline Road in Southaven
Also called: MACROHARDRR, Macrohardrr, xAI Southaven data center, MZX Tech LLC
xAI, Elon Musk's AI company, is turning a huge old warehouse on Stateline Road in Southaven into a data center called MACROHARDRR. The state calls it a $20 billion+ investment, the biggest in Mississippi history. Neighbors have complained about noise from the company's nearby gas turbines.
Where things stand: xAI bought an old 810,000 sq ft warehouse in Dec 2025 and is turning it into a data center. The state said work would start in Feb 2026.
🕒 Latest update (Jan 8, 2026): Gov. Tate Reeves announced the $20 billion+ project, the largest in state history, with state and local tax breaks.
What we know
- 📍 Where2400 Stateline Road West, Southaven, just south of the Tennessee line, Southaven, DeSoto County
- 🏢 CompanyMZX Tech LLC (xAI)
- 🏛️ Owned byxAI (SpaceXAI)
- 👤 Built forxAI
- 🌳 Size105 acres
- 🔌 Where the power comes fromNear xAI's own gas turbine power plant on Stanton Road in Southaven
- 💵 Cost$20 billion
- 💸 Tax breaksState data center sales and use tax exemption on computer equipment and software, plus fee-in-lieu-of-taxes deals with the City of Southaven and DeSoto County.
❓ Still unanswered
Nobody has answered these in public yet. Can you help find out?
- Is the data center fully running yet, and how much power does it use? 🙋 I'll find out
- How much water does it use for cooling? 🙋 I'll find out
- How many permanent jobs are there? The state said 'hundreds'. 🙋 I'll find out
- What are the terms of the fee-in-lieu-of-taxes deals with Southaven and DeSoto County? 🙋 I'll find out
What happened so far
- Dec 23, 2025An xAI company, MZX Tech LLC, bought the 810,000 sq ft warehouse at 2400 Stateline Road and nearby land.
- Dec 30, 2025Elon Musk said the building, named MACROHARDRR, would raise xAI's computing power to almost 2 gigawatts.
- Jan 8, 2026Gov. Tate Reeves announced the $20 billion+ project, the largest in state history, with state and local tax breaks.
Local votes and rules
✅ Approved
Aldermen approved plans for a 660,000 sq ft SpaceXAI data center on the city's old 51-acre training site on Tulane Road. The company got the land in a land swap and paid $40 million toward a new city training center. One alderman voted no, asking the company to finish earlier promises first.
⚖️ Court case
The NAACP, with the Southern Environmental Law Center and Earthjustice, sued xAI and MZX Tech. They say the company ran dozens of gas turbines in Southaven without an air permit, breaking the Clean Air Act. They ask the court to stop the unpermitted turbines, require pollution controls and fine the company.
📌 Other
The Southern Environmental Law Center appealed the state air permit for xAI's Southaven gas turbines on behalf of the NAACP, Young Gifted & Green and the Safe and Sound Coalition. They say the permit should not have been granted because of the pollution.
🤝 Agreement with the company
DeSoto County and the City of Southaven made a deal with xAI's company MZX Tech LLC to pay a set fee instead of regular property taxes (fee in lieu). It went to the state development agency (MDA) for final approval on Dec. 30, 2025; a second one went on Feb. 24, 2026. The terms were not in the agenda.
An aerial photo of the area.
Where this comes from
- Tech leader xAI investing more than $20 billion in Southaven · Office of Governor Tate Reeves · Jan 8, 2026
- xAI buys building and additional land in Southaven for data center · DeSoto Times-Tribune · Dec 30, 2025
- Is Elon Musk's xAI adding another data center in DeSoto County? · Mississippi Today (via OurTupelo) · Dec 31, 2025
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