One of Australia’s richest people has used Twitter to label Scott Morrison’s “fair dinkum power” as “bulls---” and challenged the PM to come up with a proper energy policy.

Mike Cannon-Brookes, co-founder of tech darling Atlassian whose holding in the company is worth several billion dollars, took to social media this afternoon to directly criticise Mr Morrison’s energy policy.

Camera Icon Prime Minister Scott Morrison has started using the term “fair dinkum power” to describe dispatchable power. Credit: Ryan Pierse/Getty Images

The PM has started using the term “fair dinkum power” to describe dispatchable power. It has sparked accusations he is using the term as code for coal-fired power stations.

He has also released a short video explaining his actions to reduce power prices, a video that seemed to anger the Atlassian boss.

Mr Cannon-Brookes, who was appointed earlier this year to a Government-funded board to develop an Australian national brand, said the PM was not being upfront with voters.

“You've made me mad & inspired me. We need a movement. We need a brand for Australia’s energy future. We need a rallying cry for Australians who believe in solar, wind and wave powers,” he Tweeted.

“I’m not sure you know what fair dinkum means. It means fair to Aussies, to our wallets AND to the planet.”

Mr Cannon-Brookes said he had actually registered the @fairdinkumpower Twitter handle and then challenged the PM.

“Let me get back to you with some logo concepts. Give me an hour,” he said before adding the gameon hashtag.