Tesla’s Shanghai Megafactory has crossed another important milestone, producing more than 2,000 Megapack energy storage systems in 2025.
According to reports from Chinese media, Tesla produced more than 2,000 Megapack energy storage systems in 2025 at its Shanghai Megafactory. The majority of those units were built for export, with shipments headed primarily to Europe and Australia, two of Tesla Energy’s most important international markets for large-scale battery storage.
The Shanghai Megafactory is located in the Lin-gang Special Area of the China (Shanghai) Pilot Free Trade Zone and officially began production in February 2025. It is Tesla’s second major manufacturing site in the city, following the original Shanghai Gigafactory that opened in 2019, and notably the company’s first dedicated energy storage factory outside the United States.
As Drive Tesla previously reported, the facility reached its first major milestone in late July 2025, when the 1,000th Megapack rolled off the production line. At that point, it had taken just under six months to build the first 1,000 units, translating to an average production rate of roughly 185–190 Megapacks per month during the factory’s early ramp-up phase.
By the end of 2025, total production had surpassed 2,000 units, meaning the second 1,000 Megapacks were produced over the remaining five months of the year. That works out to an average of around 200 units per month, indicating a steady and controlled ramp in output as Tesla fine-tuned processes, staffing, and supply chains.
This measured ramp aligns with Tesla’s broader manufacturing playbook. New factories typically prioritize consistency and quality early on, gradually increasing throughput as operations stabilize. The Shanghai Megafactory appears to be following that familiar path, building a reliable production base before pushing closer to its long-term capacity.
Once fully ramped, the facility is expected to produce up to 10,000 Megapacks per year, representing approximately 40 GWh of energy storage capacity. Each Megapack can store about 3,900 kWh of electricity and is designed for utility-scale and large commercial applications, supporting grid stability and the integration of renewable energy sources.
Shanghai now complements Tesla’s Megafactory in Lathrop, California, which also has a 10,000-unit annual capacity. Tesla’s energy storage ambitions don’t stop there, with another Megafactory under development in Texas.
