The first phase of the Xai Memphis Elon Musk Superklaster has just reached full operational capacity when the substation on the spot goes on the Internet and connects to the main energy network. According to Greater Memphis ChamberThe site will receive 150 MW from Memphis Light, Gas and Water (MLGW) and Tennessee Valley Authority (TVA). In addition, the supercomputer XAI Colossus also offers another 150 MW Megapack battery, which will serve as backups, allowing it to remain powered in the event of a failure or during increased demand.
Musk first turned on his AI cluster in July last year, in which there was 100,000 GPU NVIDIA H100 on one fabric. The XAI supercomputer was founded at such an impressive speed, because it took only 19 days to act – something that, as he said, the general director of Nvidia, Jensen Huang, usually takes four years. However, this speed meant that she had to cut some corners, such as starting without obtaining energy from the grid, so the place was used by a lot of gas turbine generators for the needs of electricity. Preliminary reports say that 14 generators, displaying 2.5 MW per item, were parked in its rooms, but some residents recently complained that over 35 turbines were noticed nearby.
This development means that the first phase of website development can now act completely on TV power supply, which source about 60% of its ability from renewable sources, such as hydroelectric, bright, wind and nuclear. For this reason, XAI will now demobilize about half of the generators, which were temporarily used to power the colossus – the other half will have to remain to satisfy the electrical needs of the second phase of the Memphis native.
However, we do not expect that it will be a long time as the second substation, which will provide another 150 MW, will appear online this fall. This means that Colossus will have a total capacity of 300 MW – sufficient to supply 300,000 houses. This is a huge requirement for power and earlier there were some concerns about whether TVA has sufficient ability to accommodate it. The energy supplier has assured various interested parties that it could satisfy this demand without affecting the supply of everyone else.
Road to supply a million GPU
In July 2024, Colossus initially launched from 100,000 NVIDIA H100 units, and its number of GPU doubled to 200,000 in February 2025. Musk apparently wants to scale the superlaster Memphis to a million GPU, and he is already trying to raise funds to create his dream with reality. However, the fact that many GPU on the same side would mean that it will need a lot more electricity – hopefully TVA can provide this without affecting the quality of power supply of inhabitants living near the Memphis superklaster.
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