A man with a forklift has allegedly gone on a rampage on Thevenard Island off Western Australia's north coast, damaging vehicles and the island's solar power infrastructure.

Karratha Police said the 34-year-old had an altercation with a co-worker around 3:00am on Saturday.

He then jumped into the forklift, which he used to flip a tourist bus and a utility.

The man also allegedly used the forklift to seriously damage the solar panel installation, causing a power outage across the whole island.

The estimated cost of the damage is believed to be more than $150,000.

The man has been charged with criminal damage and will face Karratha Magistrates Court later this month.