Megapack
Overview
Utility-scale battery energy storage system. Current Megapack stores up to 3.9 MWh; next-gen Megapack 3 (volume production H2 2026) stores 5 MWh per unit. Deployed worldwide for grid storage, renewable energy integration, and peak demand management. Tesla deployed a record 46.7 GWh of energy storage in 2025 (up 49% YoY), generating $12.8B in energy revenue. Three Megafactories: Lathrop, CA (operational); Shanghai (operational since Feb 2025); Houston, TX (under construction, H2 2026, 50 GWh/year capacity).
In production at Lathrop Megafactory since 2022 (40 GWh/year). Shanghai Megafactory operational since February 2025 (10,000 units/year, 1,000th unit produced within 6 months, first exports to Australia). Houston Megafactory under construction for Megapack 3 and Megablock (50 GWh/year, H2 2026). Total planned capacity: ~133 GWh/year.