AUSTIN, Texas — Tesla's energy business, long overshadowed by its cars, is quietly becoming one of the company's fastest-growing engines, with battery storage deployments pushing to record levels on the back of surging demand from utilities and data centers.
The company's storage arm has been setting quarterly records throughout 2026, building on a 2025 in which Powerwall and Megapack deployments topped 46.7 gigawatt-hours — a 48 percent jump over the prior year. Analysts tracking the rollout see the pace accelerating, fueled by utility-scale orders and a deepening product lineup.
Megapack, Megablock, and a Bigger Grid
At the center of the boom is the Megapack, Tesla's utility-scale battery, now joined by the Megablock — a pre-integrated, factory-assembled system designed to slash on-site installation time for large projects. The next-generation Megapack 3 is also in the pipeline, promising higher density and lower cost per kilowatt-hour.
The strategy is paying off in marquee deals. Tesla's recently announced $5 billion agreement with NatPower for 25 GWh of Megapacks across Europe ranks among the largest storage contracts ever signed, locking in years of factory output and signaling how central grid-scale batteries have become to the continent's energy plans.
Powering the AI Era
Demand is being supercharged by an unexpected driver: artificial intelligence. The explosion of power-hungry data centers has utilities scrambling for capacity that can be deployed in months rather than years, and batteries fit that need better than almost anything else.
Tesla is positioning itself squarely in that gap. Its 16-gigawatt virtual power plant partnership with Sunrun aggregates home batteries and smart devices into a distributed resource aimed directly at data-center load — turning thousands of Powerwalls into a single, dispatchable plant. Together, the utility-scale and distributed strategies give Tesla a foothold at both ends of the grid.
A Margin Story, Too
Beyond the headline gigawatt-hours, energy storage has become a high-margin contributor to Tesla's bottom line, helping smooth the cyclicality of the auto business. Industry trackers like Energy-Storage.news have noted that record deployments are arriving alongside record profitability for the segment.
With US battery production ramping, a broader product menu, and a global pipeline of utility deals, Tesla Energy looks set to keep breaking its own records. What began as a side project is fast becoming a pillar of the company — and a key part of the case that Tesla is as much an energy company as a carmaker.
