Why is CATL betting up to 3 GWh on sodium-ion batteries for Europe's power grid?

CATL and Intilion plan up to 3 GWh of TENER Sodium storage across Germany, Austria and Switzerland. Sodium-ion trades energy density for cost, a 25-year design life and strong minus-20°C performance — exactly the trade grid storage wants. One caveat: it is a target, not installed capacity.

Lithium gets the headlines, but the grid may belong to salt. Short answer: CATL and German installer Intilion have agreed to roll out up to 3 gigawatt-hours of CATL's TENER Sodium battery systems across Germany, Austria and Switzerland over five years. Sodium-ion trades some energy density for big wins in cost, lifespan and cold weather — and for stationary storage, that trade is exactly right.Why it matters: Grid batteries sit in one place, so squeezing maximum energy into minimum weight — lithium's superpower — barely matters.

What matters is price per cycle and years of service. The TENER Sodium system is rated for more than 15,000 cycles and a 25-year design life, and it keeps delivering strong power at minus 20°C, where lithium packs struggle. Sodium is also abundant and cheap — it is the stuff in table salt — which hedges Europe against lithium price swings.1.

The honest caveat: 3 GWh is a target under a memorandum of understanding, announced in October — a plan to deploy, not capacity already installed. Judge it by what actually gets built in 2027.Pro tip: when any battery deal lands, separate "signed orders" from "targets." Both are news; only one is steel in the ground.