Northwest Iowa Power Cooperative (NIPCO) experienced a transmission‑level outage at 16:45 on May 4 after the NIPCO Control Center was immediately alerted to the event by NIPCO’s internal protection system of any outage on the L3 to Sioux City transmission line. This line includes several electric transmission substations that serve members of North West REC. In response, NIPCO’s electric system operated as designed, automatically opening the line.

Winter Storm Nyla affected many structures in the NIPCO service territory. Learn more about how NIPCO and mutual aid assistance from fellow transmission cooperatives restored power and communications efforts during the almost 84-hour outage.