Elon Musk quietly acquired APR Energy, a company specializing in mobile gas and diesel turbines, earlier this year. The $1 billion purchase, first reported by Electrek, adds a fossil fuel business to Musk's diverse portfolio.

APR Energy's technology, which involves mounting turbines on trailers, is expected to be utilized as a direct power source for xAI's data centers, particularly those involved in AI development and content production. This move draws parallels to xAI's previous use of mobile turbines at a data center in Southaven, Mississippi, which led to a lawsuit concerning Clean Air Act violations.

The Department of Justice is seeking to dismiss the lawsuit to allow the US military to continue using xAI's Grok. This acquisition and potential pipeline project in Texas represent a significant shift from Musk's past criticisms of fossil fuels.