As the federal government grapples with talk of an energy crisis, two tech billionaires appear to be getting a ground-breaking deal done on Twitter.

The spur was Tesla's high-profile claim on Thursday that its batteries could solve South Australia's much-publicised energy problems in 100 days.

Atlassian co-founder Mike Cannon-Brookes took up the claim with gusto, linking to an Australian Financial Review (AFR) article on the subject and asking Tesla founder Elon Musk if he was serious.

"Holy s#%t", he tweeted, then appealed to Musk directly: "Lyndon & @elonmusk - how serious are you about this bet? If I can make the $ happen (& politics), can you guarantee the 100MW in 100 days?"