Elon Musk has quietly bought APR Energy, a Jacksonville-based company that operates a fleet of mobile gas and diesel turbines totaling more than 1 GW of generation capacity.

The self-styled champion of a “solar electric economy” now owns a fossil fuel power company — and he’s buying it to feed the electricity-hungry data centers running xAI’s Grok.

Elon Musk told Tesla staff to move to using Grok, the AI model from his own xAI (now folded into SpaceX), according to a memo sent to employees on Friday.

The push comes days after Tesla capped employee spending on third-party AI tools — and it lands even though Musk himself concedes Grok is not as good as its rivals.