Elon Musk Is Building the World’s Largest Supercomputer in Memphis—And Some Locals Are Very Concerned

August 28, 2024
2 mins read
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If artificial intelligence is going to become the world’s new default tool for automation and information, the computers that run it are going to need power—and a lot of it. According to the International Energy Agency, “Search tools like Google could see a tenfold increase of their electricity demand” if they fully implement AI. Data already shows that a ChatGPT query uses nine times the energy of a typical browser search; if usage trends continue for cloud-based services, AI, and cryptocurrencies, 6% of the United States’s energy consumption will be caused by the data centers that power them.

At a 750,000-square-foot vacant manufacturing plant in southwest Memphis, Elon Musk’s xAI startup is currently building what could be the world’s largest supercomputer. Local utility company Memphis Light Gas and Water (MLGW) claims the project will create more than 300 “new, high-paying jobs” and result in approximately $500,000 of annual PILOT payments to the city. In the meantime, residents have raised concerns about the local environmental impacts of its energy requirements—up to 150 megawatts, or enough to power around 100,000 homes—in a county where climate vulnerability is extremely high.

Elon Musk at a conference in 2023.

Photo: Getty Images

“This is a transformative moment for Memphis,” said Ted Townsend, president and CEO of the nonprofit Greater Memphis Chamber, during a press conference announcing the project in June. “I’m excited for all Memphians to have this identity where we are leading the artificial intelligence space.” Although his office refused to comment for Architectural Digest’s story, Townsend has previously said that the xAI project would be the “largest multibillion-dollar investment in the city of Memphis’s history.” However, the details on its path to inauguration are murky. The deal was struck—and the facility is being constructed—on a respectively rapid timeline. When the project was publicly announced on June 5, it had already been inked with MLGW. Musk is aiming for full facility operation, including the construction of a new on-site electric substation to increase its current energy capacity from 50 to 150 megawatts, in 2025.

A former Electrolux facility in Memphis is where Musk plans to develop a new facility to house a giant supercomputer.

Photo: Bloomberg/Getty Images

To do so, it first needs approval from the federally owned utility company Tennessee Valley Authority. Current “discussions include taking advantage of TVA’s demand response programs, which support load reduction during peak demand periods,” says TVA spokesperson Melissa Greene. Local environmentalists aren’t convinced that would be enough to support the extra demand on the city’s grid, and fear MLGW’s claim to use gas-powered “peaker plants” would only accelerate the area’s devastating pollution rates. “We also have significant concerns that xAI’s demand for power will cause the Tennessee Valley Authority to operate its South Memphis gas plant at a higher capacity and lock in plans for an additional plant in the area, which would create even more air pollution problems for people living nearby,” says LaTricea D. Adams, founder, CEO, and president of nonprofit Young, Gifted & Green.

Water is another concern. The xAI supercomputer will require constant chilling, including through an evaporative cooling tower system that “consumes large quantities of water,” stated MLGW. Its facility would require an additional one million gallons per day.

The energy requirements for supercomputers—up to 150 megawatts, or enough to power around 100,000 homes—has raised concerns from local residents.

Photo: Getty Images/Andrey Semenov

When completed, the xAI supercomputer may surpass the size of its current leader, the Hewlett Packard Enterprise Frontier, nearly 400 miles away in Oak Ridge, Tennessee. There, climate vulnerability is in the 87th percentile, according to the US Climate Vulnerability Index. Memphis’s Shelby County is starting at a baseline 10% higher, the most vulnerable in Tennessee for risk of exposure to toxic chemicals and air pollutants.

“South Memphis, like many other communities of color, is on the front lines of climate change,” says Adams. “If TVA and Memphis leaders want to get serious about fighting the climate crisis, they must push for a firm commitment from xAI that its facility will stop running or relying on dirty, climate-warming gas plants and will instead invest in renewable energy and battery storage.”



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