Energy Resilience of Households in a Prepared Union – The Potential of a Sodium Battery-Based Solution

This study examines the potential of sodium ion battery technology to strengthen energy resilience in European households and businesses, particularly in meeting a 72 hour electricity self sufficiency objective under the EU’s preparedness strategy. It evaluates the current market and solutions provided by lithium ion batteries and compares it with sodium ion batteries, which utilise abundant, low cost, and widely available resources. Drawing on literature review, stakeholder consultation, and case studies, the report highlights sodium ion batteries as a complementary technology for stationary energy storage, offering advantages in cost stability, safety, and supply chain security.

The analysis finds that while sodium ion batteries are approaching cost competitiveness and demonstrate rapid technological progress, their large scale adoption in Europe faces significant challenges. To take the leadership in the development of this technology, the EU would need to put forward solutions for substantial investment, coordinated policy support, and industrial scaling.