GM Jumps Into Grid Batteries With US-Made Sodium-Ion Cells
GM entered grid-scale storage with Denver startup Peak Energy on US-made sodium-ion batteries — no active cooling, domestic materials — for data centers and the grid.
TL;DR — General Motors entered grid-scale energy storage, partnering with Denver startup Peak Energy on US-made sodium-ion batteries — a chemistry that needs no active cooling and uses domestically sourceable materials — targeting data centers and the grid.
The AI data-center boom needs batteries, and an unexpected player wants in. On June 9, 2026, GM entered grid-scale storage with sodium-ion cells.
The move
At its "Empower" event, General Motors entered grid-scale energy storage, partnering with Denver startup Peak Energy (backed by GM Ventures) on US-made sodium-ion cells. The chemistry offers roughly 20-year usable life, operates at 55°C with no active cooling, and uses domestically sourceable materials. Peak has about 6.5 GWh booked (including up to 4.75 GWh to Jupiter Power by 2030) and a planned 4 GWh/year US plant; GM-co-developed cells are expected around 2028.
| Detail | |
|---|---|
| Chemistry | Sodium-ion (US-made) |
| Usable life | ~20 years |
| Cooling | None (operates at 55°C) |
| GM-developed cells | ~2028 |
What they said
"Sodium-ion-powered energy storage systems have the potential to operate without active cooling and with much less system complexity." — Kurt Kelty, VP of Battery & Sustainability, General Motors
Why it matters
- A new market for GM. A US automaker pivots into stationary grid and data-center storage.
- Chemistry divergence. Sodium-ion sidesteps lithium’s supply and cooling demands.
- Made in America. Domestic materials and plants fit reshoring and grid-resilience goals.
FAQ
What is GM doing in energy storage?
GM entered grid-scale storage on June 9, 2026, partnering with Denver startup Peak Energy on US-made sodium-ion batteries aimed at data centers and the grid. The cells offer roughly 20-year life and operate at 55°C without active cooling.
Why sodium-ion instead of lithium?
Sodium-ion uses domestically sourceable materials, needs no active cooling, and reduces system complexity — useful for stationary storage. It contrasts with lithium-based systems like Tesla’s Megapack and with CATL’s sodium-ion focus on EVs.
Sources
Image: “GM Renaissance Center, Detroit” by Bohao Zhao, CC BY 3.0, via Wikimedia Commons.
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