Has there been a time when Decatur lost power and the battery took over?

There have been several times since 2018 that the battery has enabled Decatur Island to keep power up and running. If the outage is on the Decatur grid, then this disconnects your service from the battery and/or BPA/OPALCO substation, so the battery is unable to provide backup power for those kinds of outages. When the outage is between the mainland and Decatur then the battery can provide backup that will extend the power supply to Decatur meters. In January 2021 and December 2022 during outages, the battery extended the power supply for Decatur Island.