Negative
Setback or risk materialised
Medium Impact
Significant progress or notable issue
Following the 1 September 2025 outage of Estlink 1, Fingrid identified the malfunction at a reactor in the Espoo substation and indicated that repairs would be required, estimating a repair period of around three weeks during which Estlink 1 would remain out of use. The work focuses on fixing the substation equipment rather than the cable itself, which Fingrid confirmed had not failed.