SELCO Substation Transformer Replacement

At a glance

• What: Replacement of a failed substation transformer with a spare unit bought from National Grid.
• Where it stands: Temporary engineering done and the spare was being delivered; swap expected to take about two weeks. A permanent replacement has a lead time of at least three years, and SELCO received a $1.5 million insurance payment.

Sources

• Video: https://youtube.com/watch?v=HbkEm5RRR6Y

Log

• 2026-09-22 - SELCO Commission - Update on the purchase, testing and move of the spare transformer; rewinding the failed unit was being explored but not thought viable.
• 2026-10-27 - 2026-10-27 - SELCO Commission Meeting: new transformer expected online mid-November.