Tesla

Tesla's stationary storage line is a single product family, Megapack, sold as an AC block with integrated inverters and thermal system on a built-in foundation. Megapack 2 XL is the current volume product (2h: 1,927 kW / 3,854 kWh; 4h: 979 kW / 3,916 kWh per unit, 480 V AC, IP66, UL 1973 / 9540 / 9540A / 1741, IEC 62619, 20-year warranty), built in Lathrop and Shanghai (80 GWh/yr combined). Megapack 3 (about 5 MWh AC per unit, LFP cells sourced from the US, Southeast Asia and China, simplified thermal bay with 78% fewer connections) started rolling off the line at Megafactory Texas on 6 August 2026; Megablock integrates four Megapack 3 units with a transformer and switchgear into a pre-engineered medium-voltage block (20 MWh AC, 91% round-trip efficiency at MV incl. auxiliaries, -40 to 60 C, >10,000 cycles, 25-year life), with deliveries scheduled for H2 2026. Tesla is a system integrator for Megapack (cells purchased, chemistry LFP). Not disclosed publicly: cell supplier and cell Ah, cell configuration, per-unit power of Megapack 3, cycle-life test conditions, detailed datasheet PDFs (the public site only exposes a spec pop-up in the order configurator).

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FOR MEDIA USE ONLY. Download the latest product images provided by Tesla. Our media assets contains image downloads for use by news media in connection with a story or article about Tesla, Inc. or Tesla products and services. By downloading any content appearing in the media assets, you understand and hereby agree and represent that: (1) you are a member of the news media; (2) use of the content is in connection with a story or an article appearing in newspapers, periodicals, digital publications or television; (3) all images and rights thereto remain the property of Tesla, Inc.; and (4) use of the image is not for publication covers, advertising, promotion or otherwise for commercial purposes. Furthermore, use of any and all images and content appearing on this page must each include the notice "Courtesy of Tesla, Inc." Use of materials copied from this website is at your own risk. You must obtain prior written consent from Tesla, Inc. or its affiliate(s) for uses that exceed the above parameters. (tesla.com/tesla-gallery, redirect target of tesla.com/presskit; the Megapack asset zip on that page contains Megapack 2 XL photos only)

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