Part of Dyersville was without power on Friday night.
Alliant Energy says over 500 customers lost power, including homes and businesses along Highway 136 from Country Junction to Dupaco.
The area lost power around 7 pm. Crews responded to the community, with power restored to nearly all customers by 10 pm.
An Alliant Energy spokesman says the outage was caused when a customer’s electrical equipment failed. No word on whether that customer was a business or a home.