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Europe’s future battery cell demand is projected to exceed 1 TWh yr−1 by 2030, outpacing domestic production despite strong expected growth. While 50–60% self-sufficiency appears likely, achieving the European 90% target remains uncertain.
Sodium-ion batteries are considered a promising substitute for Li-ion, but the timeline and conditions for achieving cost-competitiveness remain uncertain. This study evaluates their techno-economic potential, showing that while challenging, they could compete with low-cost Li-ion batteries by the 2030s under specific conditions.