Anthropic has struck a $3.4 billion deal for 1.7 gigawatts of heavy-duty gas-fired generators from San Antonio-based OnePWR Solutions, deepening its effort to control electricity infrastructure for its data centers. The transaction, reported by the Financial Times, also includes engineering and construction capabilities needed to install the equipment and is the largest known single purchase of power-generation equipment by an AI laboratory. Anthropic had initially planned to become a OnePWR customer but instead took over generator orders that OnePWR had placed with Caterpillar about two years earlier; it did not acquire OnePWR or hire its employees. The move follows similar power investments by SpaceX's AI subsidiary xAI and Alphabet. Anthropic has disclosed nearly $900 billion in computing commitments through 2045 and is also a major SpaceX customer, with monthly payments for leased computing capacity expected to reach $3.1 billion by year-end. The company is preparing for a potential initial public offering as early as November, while Blackstone has warned that its infrastructure spending could result in a junk credit rating rather than the investment-grade rating previously expected.