CATL Begins Mass Production of Sodium‑Ion Batteries: A Low‑Cost Alternative to Lithium
In 2026 CATL announced its first 15 GWh‑per‑year sodium‑ion battery line, a cheaper, less‑lithium‑dependent technology that could democratise electric vehicles and boost renewable‑energy storage in the coming years.
CATL, the world’s largest lithium‑battery maker, confirmed yesterday at a Shanghai press conference the launch of an industrial‑scale sodium‑ion battery line with an annual capacity of 15 GWh. The announcement is documented in official press release 2026‑04 issued by China’s Ministry of Industry and Information Technology (MIIT, 2026).
Developed together with the Institute of Electrochemical Energy of the Chinese Academy of Sciences, sodium‑ion cells deliver a slightly lower energy density (≈ 250 Wh/kg versus 300‑350 Wh/kg for lithium) but benefit from raw‑material costs that are roughly 70 % cheaper. The Ministry of Science and Technology (MOST) published a technical assessment (Technology Report 2026, p. 12) estimating a kWh price drop of about 40 % compared with conventional lithium batteries, making the technology attractive for mid‑low‑range EVs and grid‑scale storage.
The International Energy Agency projects renewable‑energy storage to grow 9 % annually through 2030. The entry of sodium‑ion batteries could accelerate that trend, especially in regions where lithium supply chains are weak. At the “China Battery Expo 2026”, CATL CEO Zeng Yuqun declared, “Our goal is to double the market share of non‑lithium batteries by 2032 while ensuring sustainable, low‑impact production.”
Initial applications foreseen include:
electric cars in B and C segments for emerging markets;
distributed storage for rural micro‑grids across Asia and Africa;
backup power for data‑centres running on renewable energy.
BloombergNEF forecasts that by 2028 sodium‑ion batteries could supply up to 15 % of global storage demand, reducing reliance on lithium and mitigating geopolitical price volatility.