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OpenAI and SoftBank Invest $1 Billion in SB Energy for Gigawatt-Scale AI Data Centers

The partnership ties OpenAI’s compute expansion to SB Energy’s integrated power infrastructure under the Stargate program.

Overview

  • OpenAI and SoftBank each committed $500 million to SB Energy to accelerate data center and energy infrastructure buildout in the United States.
  • OpenAI selected SB Energy to build and operate a 1.2‑gigawatt data center in Milam County, Texas.
  • SB Energy said multiple multi‑gigawatt campuses are under construction with initial facilities expected to begin service starting in 2026.
  • As part of the partnership, SB Energy will become a customer of OpenAI by using its APIs and deploying ChatGPT for employees.
  • The move advances the Stargate initiative and follows Ares’ $800 million investment in 2025 as well as SB Energy’s acquisition of Studio 151 to strengthen in‑house execution.