SpaceX spent $329 million on Tesla Megapack battery systems during the first half of 2026 as costs connected to its AI data center expansion rose sharply, according to a public quarterly filing with the Securities and Exchange Commission.

Purchases reached $295 million in the second quarter alone, up from $34 million in the first. The six-month total was already about 65% of the $506 million SpaceX recorded in Megapack purchases for all of 2025.

The increase adds another cost to the AI infrastructure equation. Beyond servers, networking, and cooling, large data centers need electrical systems that can respond quickly when thousands of chips…

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