SpaceX has significantly increased its acquisitions of Tesla Megapack, investing $295 million in the battery storage systems during the second quarter and $329 million year-to-date, as outlined in the earnings report published on Tuesday.

This acquisition underscores the deep interrelation of Elon Musk’s array of enterprises. Musk, who serves as CEO and the primary shareholder of SpaceX, also oversees Tesla. Musk’s artificial intelligence venture, xAI, bought his social media platform, X, in 2025. Earlier this year, SpaceX absorbed xAI.

These large-scale batteries are likely being utilized at the company’s xAI data centers. Prior to xAI’s merger with SpaceX, the AI firm procured $430 million in Megapacks for its data facilities. In the first quarter of this year, xAI had only acquired $34 million worth of these units. SpaceX also indicated that as of December 2025, it had procured $131 million worth of Tesla Cybertrucks at the manufacturer’s suggested retail price, according to its regulatory disclosures.

While xAI has predominantly relied on natural gas to fuel its data centers — including several unpermitted turbines at a location in Mississippi close to the Colossus data center initiative — large batteries like the Megapack remain an essential component of data centers.

In addition to delivering considerable backup power that can be accessed in a fraction of a second, batteries can supply additional power to GPUs during peak demand periods. AI data centers do not consume power uniformly; instead, their power needs fluctuate according to the requirements of training AI models and executing inference.

Such surges can lead to hefty fees from local utilities or strain on-site generators. Batteries assist in leveling out these surges, minimizing expenses while ensuring the data center’s steady operation.