Megapack
Grid-scale batteries
Tesla's utility-scale battery that arrives pre-assembled, sold to utilities, power producers and large businesses to store and dispatch energy.
Grid-scale batteriesSince 2019
How it started
Tesla's grid battery in a box.
2019the year it started
Tesla introduced Megapack in 2019 as a 3 MWh battery pre-assembled at the Gigafactory to cut installation time and cost.
How big it is
How big is Megapack?
46.7 GWhEnergy storage deployed (Megapack and Powerwall combined)2025
13.5 GWhEnergy storage deployed (Megapack and Powerwall combined)Q2 2026
40 GWhInstalled annual Megapack capacity, CaliforniaQ2 2026
Its place in Tesla
The big engine of Tesla Energy.
Megapack is the utility-scale product of Tesla's energy generation and storage segment and its main driver of storage deployments.
Who it competes with
FFluenceCCATL TENERBBYD MC CubeSSungrow PowerTitan
What Tesla does not disclose
- Megapack revenue on its own (reported inside Energy generation and storage)
- Megapack GWh deployed on its own (Tesla reports Megapack and Powerwall combined)
- Megapack share of Tesla revenue
- Megapack margin or order backlog
The group behind itTesla
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Sources
Every number on this page comes from Tesla's own reports.
- Tesla Q3 2019 Update: introduction of Megapack, a 3 MWh battery pre-assembled at the Gigafactory ↗
- Tesla Fourth Quarter 2025 Production, Deliveries & Deployments (2025 deliveries by Model 3/Y and Other Mode… ↗
- Tesla Second Quarter 2026 Production, Deliveries & Deployments ↗
- Tesla Q2 2026 Update: operational summary (Supercharger stations and connectors, storage deployed) and inst… ↗
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