Power was cut to hundreds of homes and traffic lights were out on State Highway 1 between Porirua and Paremata after a small fire.
A Wellington Electricity spokesman said it was a broken jumper at the top of a pole near Aotea College about 8.20am.
About 880 people lost power. Service was restored by 9.10am. Repairs were continuing.
Fire Service central communications spokesman Chris Dalton said the fire triggered an alarm at the college. The fire was out by the time the fire service arrived.
Inspector Marty Parker said the power outage had knocked out the state highway one traffic lights near the Porirua police college.
- The Dominion Post
How many coffees do you have a day?Related story: Coffee as we know it at risk of dying