Elon Musk’s xAI Buys Building for Third Supersized Data Center
The Takeaway
- xAI is planning a new supersized data center called “Macroharder”
- New site is near another xAI data center and gas power plant project
- Plan is part of a goal of running 1 million chips in Memphis area
Elon Musk’s xAI has bought a building for a third supersized data center it’s planning outside Memphis, Tennessee, in pursuit of the company’s goal of getting 1 million chips online to power its artificial intelligence models, according to property records and a person with direct knowledge of the project.
The expansion plan shows xAI is doubling down on its strategy of building, running and powering its own data centers, even as the company is still trying to figure out how to make money from its Grok AI models. Unlike rivals such as OpenAI and Anthropic that are more reliant on partnerships with outside developers and big cloud providers, xAI has mostly gone it alone.
While xAI’s approach is expensive and risky, the company has been able to get data centers online quickly as rivals have struggled to translate splashy announcements into finished projects. Hitting xAI’s publicly stated goal of getting 1 million chips in the Memphis area online would help it stay competitive. OpenAI CEO Sam Altman said in July that the ChatGPT creator “will cross well over 1 million GPUs online” by the end of 2025.
Property records show an xAI subsidiary purchased an 810,000 square-foot warehouse in Southaven, Mississippi, from an affiliate of BlackRock-owned private equity real estate firm ElmTree Funds earlier this month. The site is immediately adjacent to xAI’s 1 million-square-foot Colossus 2 data center, which is just across the state line in Memphis. (After the publication of this story, Musk acknowledged the new data center site in a post on X. Musk wrote: “xAI has bought a third building called MACROHARDRR. Will take @xAI training compute to almost 2GW.”)
xAI plans to start turning the newly purchased warehouse into a data center in 2026, the person with direct knowledge of the project said. Both the new data center and Colossus 2 are close to a natural gas power plant that xAI is building in the area, as well as other power sources.
Earlier this month, Musk seemed to tease the possibility of a new data center in response to a satellite image of the word Macrohard painted on the roof of Colossus 2. “MACROHARDER coming soon,” Musk wrote on X. The term “Macrohard” is a play on Microsoft’s name and a nod to Musk’s ambitions to have xAI build an “AI software company” that can compete with Microsoft.
Also in recent weeks, crews built a new road connecting Colossus 2 and the site of the third data center.
Asked for comment, xAI’s press email responded with an automated reply: “Legacy Media Lies.” ElmTree Funds didn’t respond to a request for comment.
Data center construction typically requires billions of dollars in cash. While xAI’s current finances couldn’t be learned, The Information reported last month that the company was planning to raise $15 billion at a $230 billion valuation.
Hedging Against Backlash
xAI’s decision to build its data centers in a metro area of more than 1 million people allows it to convert existing structures like warehouses and a former appliance factory into data centers. That has helped the company to bring facilities online faster than rivals can.
But the proximity to neighborhoods has also exposed xAI to political opposition, especially around its use of gas turbines to generate power for its data centers.
Its first data center, Colossus, which Musk said has 230,000 Nvidia GPUs, sparked significant complaints when it opened in 2024 because xAI used portable gas turbines at the site. While most local elected officials supported the xAI project when it was announced, a growing contingent of activists and local politicians says the turbines have worsened air pollution in Memphis.
Several local candidates critical of xAI are now running in elections in 2026, including to serve as mayor of the county that includes Memphis and for the congressional seat that represents most of the city. As opposition has grown in Memphis, xAI has moved more infrastructure across the border into Mississippi.
xAI removed some of the gas turbines from the first Colossus site earlier in 2025. Around the same time, it started running turbines and building a permanent turbine-powered plant in Mississippi through a joint venture with a Texas-based energy firm called Solaris Energy Infrastructure. That facility is providing power to Colossus 2, which Musk has said will eventually have 550,000 Nvidia GPUs, and would be close enough to the newest data center to support it as well. xAI has built new power lines connecting the sites in 2025.
Solaris has said in securities filings that it expects to provide more than 1 gigawatt of power to xAI by early 2027 through the joint venture. In addition to the power plant under construction, Colossus 2 and the newest data center are also located near a separate gas power plant run by the Tennessee Valley Authority, a natural gas pipeline, and connections to local utilities in Tennessee and Mississippi.
Officials in Mississippi have welcomed xAI so far, though some neighbors have complained about noise from the generators and construction at the power plant site. In recent months, xAI has erected a large wall to muffle the noise between the power plant site and nearby neighborhoods.