Tesla’s Energy business closed out 2025 with yet another milestone, as the company deployed a record 14.2 GWh of energy storage in Q4 2025. The result, a 29% increase year-over-year, caps off Tesla’s strongest year ever for stationary storage and reinforces the company’s accelerating momentum in grid-scale batteries.
The Q4 performance stands out not only as a quarterly record, but also as a key contributor to Tesla’s broader energy growth trajectory. Tesla’s storage business has moved from incremental gains earlier in the decade to a steep, sustained growth curve beginning in 2023 and accelerating sharply through 2024 and 2025.
That momentum was already evident last year, when Tesla deployed 31.4 GWh of energy storage in 2024, shattering its previous annual record. For comparison, Tesla deployed less than half of that figure in 2023, 14.7 GWh, but that itself had more than doubled the company’s 2022 total. Even more striking, Tesla’s entire 2020 energy storage output totaled roughly 3.0 GWh, highlighting how dramatically the business has scaled in just five years.
Annual data highlights just how rapidly deployments have increased. During 2024, Tesla posted multiple quarters that exceeded the company’s full-year energy storage totals from just a few years earlier. Now a single quarter alone surpasses the entirety of Tesla used to deploy in previous years, with the company having deployed over 100 GWh in total energy storage deployments.
The driving force behind this expansion continues to be Megapack, Tesla’s utility-scale battery system designed for grid stabilization, renewable energy integration, and peak-load management. Megapack deployments have surged globally, with major projects coming online across North America, Europe, and Australia.
Last year Tesla unveiled their next-generation utility-scale storage solution called Megablock, which promises 23% faster installs and 40% lower costs.
Tesla’s ability to meet this ever-increasing demand is closely tied to its rapidly expanding manufacturing footprint. The company’s Lathrop Megafactory in California has been steadily ramping production, while Tesla’s Shanghai Megafactory, completed in late 2024, adds significant additional capacity. The company will also soon be opening its third Megafactory in Texas.
At full output, each facility is designed to support up to 40 GWh of annual Megapack production, giving Tesla a clear path to continued growth in 2025 and beyond.
