Power out, ute engulfed in flames after smashing into transformer on Auckland's North Shore

A crash has knocked out power and set a ute on fire in Auckland's North Shore on Saturday night.

Police said the accident happened after the vehicle collided with a power transformer at about 7:30pm on East Coast Road in Windsor Park, Mairangi Bay.

Witness photos and videos show the ute and the power transformer on fire, with massive flames leaping into the air.

"Looks like a ute has driven straight into a construction site and set off a massive blaze. Police and fire seen speeding to the scene," one told Newshub.

Police said it's unclear if the vehicle's driver was injured.

Power out, ute engulfed in flames after smashing into transformer on Auckland's North Shore
Photo credit: Supplied

Fire and Emergency told Newshub firefighters responded to a crash where a ute hit two power transformers.

"The cooling oil from the transformers caught fire and the burning oil flowed into a nearby house that was under construction and set it on fire," said Fire and Emergency Group Manager Shaun Thornton.

"The front and the interior of the front part of the house have been extensively damaged but firefighters were able to contain the fire and prevent it from spreading to adjoining properties."

Power out, ute engulfed in flames after smashing into transformer on Auckland's North Shore
Photo credit: Supplied

Thornton said it was "a very good save" by the crews. Firefighters are still dampening down the scene.