The electricity is back on in the parts of Grundy County that lost power this morning. Utility crews don’t have a specific number on how many customers lost electricity, but the outage left the towns of Grundy Center, Holland and Reinbeck in the dark for about 90 minutes.

A large rural area of the county was also affected. Officials with Grundy County Rural Electric Cooperative say a mechanical failure at a substation near Wellsburg caused the outage around 6 A.M. today.