SpaceX Expands Use of Tesla Megapack Batteries, Spending Hundreds of Millions in 2026
SpaceX boosts Tesla Megapack purchases to support AI data-center power needs, spending $295M in Q2 and $329M year-to-date as it integrates xAI operations.
SpaceX confirmed a major uptick in purchases of Tesla Megapack battery systems, reporting $295 million in Megapack acquisitions during the second quarter and $329 million year-to-date. The company said the industrial-scale batteries are intended to support its growing data-center operations, including capacity tied to the xAI business. The disclosure underscores a widening operational overlap between SpaceX and other companies led by the same principal stakeholders.
SpaceX’s Megapack Purchases
SpaceX’s regulatory filing shows the recent Megapack outlays accelerated sharply in the spring quarter, signaling an immediate push to expand on-site battery storage. Those purchases follow earlier large orders placed by xAI before it was folded into SpaceX, and they mark one of the company’s largest single-line investments in stationary battery hardware. Company documents link the Megapack buys to data-center power management rather than vehicle charging or grid services.
Corporate Links Between SpaceX, Tesla and xAI
The Megapack transactions highlight how closely interwoven the energy and AI assets are among companies controlled by the same leadership. xAI, which completed an acquisition of a social platform in 2025 and later merged with SpaceX, had previously ordered substantial Megapacks for its compute facilities. That prior activity included a large pre-merger purchase of Megapacks, while during the first quarter xAI’s reported Megapack spend was comparatively modest.
Deployment at xAI Data Centers
Company disclosures and industry analysis indicate the newly acquired Megapacks are earmarked for data-center deployments that host large AI training and inference workloads. Batteries at those sites serve dual functions: acting as fast-response backup power and providing surge capacity when GPU clusters demand short bursts of electricity. For AI operations that experience sudden and unpredictable spikes in power use, battery storage reduces the reliance on immediate grid draws.
Why Megapacks Matter for AI Workloads
Megapack systems can deliver power within fractions of a second, making them well suited to protect compute clusters from outages and voltage disturbances. They also allow operators to shave peak demand charges by smoothing consumption profiles, which can materially lower utility bills at facilities running thousands of high-power processors. In practice, batteries let data-center operators bridge gaps between generator ramp-up times and abrupt GPU load increases.
Megapacks additionally complement on-site generation assets by absorbing excess generation and discharging during peak load periods, improving overall resiliency. For large-scale AI training runs that last days to weeks, the ability to maintain consistent power without incurring large grid penalties is a significant operational advantage.
Environmental and Regulatory Concerns at Data Sites
Despite the added battery capacity, reports indicate xAI’s data centers have continued to rely heavily on natural gas generation for primary power, including the use of multiple turbine units at a Mississippi site. That reliance has drawn scrutiny because some turbines reportedly lacked full permitting, raising questions about local regulatory compliance and environmental oversight. Analysts caution that batteries are not a replacement for primary generation and that integrating storage does not by itself remove emissions or regulatory obligations.
Local officials and environmental groups are likely to monitor how the company balances gas-fired generation with storage and whether investments in battery fleets eventually enable a cleaner grid mix at those facilities. The interaction between rapid-response storage and traditional generation will be a focal point for both operational planning and public accountability.
Financial Disclosures Beyond Batteries
SpaceX’s filings also disclosed other material equipment purchases tied to corporate operations, including a noted acquisition of electric trucks valued at more than $130 million at list price as of late 2025. Those vehicle purchases, coupled with the Megapack spending, paint a picture of rapid capital deployment across mobility and stationary energy assets. Investors and industry watchers are parsing these outlays for signs of how quickly SpaceX intends to scale its data and logistics infrastructure.
Consolidating xAI into SpaceX’s financials has made previously siloed capital commitments more visible, which in turn has prompted closer examination of how hardware procurement supports AI compute capacity. The pattern of large, concentrated purchases suggests an operational strategy aimed at aggregating compute and energy resources within a single corporate footprint.
The expansion of Megapack deployments at AI data centers will be watched closely by regulators, customers, and energy market participants, as the balance between backup resilience, cost management, and environmental impact continues to shape large-scale compute infrastructure decisions.
