Energy storage

Analyst brief

Seven of 213 energy-storage companies carry records, totaling 16 incidents with fire as the dominant type (8 of 16), followed by recall (4) and single entries for malfunction-related counts, fatality, and regulatory action. Severity is weighted toward level 3 (9 of 16) with one level-5 event. The concentration of fire incidents across grid-scale and battery manufacturers (LG Energy Solution, Fluence, Tesla Energy, Eos Energy, Samsung SDI, EnerSys) is consistent with the known thermal-runaway failure mode of large-format battery systems, and the pattern recurs across multiple independent operators rather than a single company.

Company risk ranking

Index 0-100: each documented incident is weighted by severity and by how well-sourced it is, discounted as it ages (half its weight every 3 years), then summed per company and scaled on a log curve so the highest-risk company worldwide is 100. Rank in industry: position among companies in the same industry that have at least one documented incident. Band groups the index: Critical (75+), High (45-74), Elevated (15-44), Low (under 15 with at least one incident); None documented means no public incident was found, which is not proof of safety.