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

SpaceX ramps up its purchases of Tesla Megapacks, spending $295 million in the second quarter of 2026 and $329 million so far this year. The transactions highlight the deep integration across Elon Musk's companies, following SpaceX's acquisition of xAI. The industrial-scale batteries are deployed at xAI data centers to smooth out power spikes from GPUs and provide backup power, supplementing xAI's existing natural gas turbine infrastructure in Mississippi.

SpaceX Megapack purchases

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

Musk company interconnections

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

Data center battery applications

• ▪Batteries smooth out power demand peaks in AI data centers, which lowers utility charges and ensures consistent operations when training AI models.
• ▪Industrial-scale batteries like Tesla Megapacks provide backup power to data centers in a second or less and supply extra power to GPUs during peak demands.

xAI data center power infrastructure

• ▪xAI has utilized nearly 50 unpermitted natural gas turbines to power a data center site in Mississippi near its Colossus data center project.
• ▪Prior to 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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