SpaceX purchases $329M in Tesla Megapacks for battery storage in 2026

SpaceX has ramped up its purchases of Tesla Megapacks, spending $295 million in the second quarter of 2026 and $329 million so far this year. The purchases highlight the deep integration of Elon Musk's companies, following SpaceX's acquisition of xAI earlier in 2026. The industrial-scale batteries are deployed at xAI data centers to provide backup power and smooth out energy demand peaks from GPUs, supplementing on-site natural gas turbines.

SpaceX Megapack purchases

• ▪SpaceX spent $295 million on Tesla Megapack battery storage devices in the second quarter of 2026 and $329 million in total so far in 2026.
• ▪SpaceX reported that as of December 2025, SpaceX had acquired $131 million worth of Tesla Cybertrucks at the manufacturer's suggested retail price.

Musk company interconnections

• ▪Elon Musk's artificial intelligence business xAI acquired his social media platform X in 2025, and SpaceX subsequently acquired xAI in early 2026.
• ▪Elon Musk serves as the CEO and largest shareholder of SpaceX while also running Tesla.

Data center battery applications

• ▪Industrial-scale batteries like the Tesla Megapack provide backup power to data centers that can be tapped in a second or less.
• ▪Batteries smooth out power demand peaks in AI data centers, which helps lower utility charges and ensures consistent operations when GPU demand fluctuates.

xAI data center power infrastructure

• ▪xAI has utilized nearly 50 unpermitted natural gas turbines to power a data center site in Mississippi near the Colossus data center project.
• ▪Before merging with SpaceX, xAI purchased $430 million worth of Tesla Megapacks for its data centers, followed by a $34 million purchase in the first quarter of 2026.

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