Jemma Green was born in Perth. After a finance degree she began her career in banking at J.P. Morgan in London. She later returned to Western Australia for a PhD in sustainable energy.
While writing on the economics of self-generated solar power, she saw that rooftop solar was not reaching people in apartments. In 2015 she met utilities veteran David Martin at an industry gathering, and the two conceived a blockchain ledger for trading power between neighbours.
Power Ledger was founded in Perth in 2016, with John Bulich as a third co-founder. In 2017 its token pre-sale raised about A$17 million and sold out within 72 hours. The full public sale raised about A$34 million.
In 2018 Power Ledger won Richard Branson's Extreme Tech Challenge and Green was named EY Australian Fintech Entrepreneur of the Year. The same year Origin Energy ran a trial of peer to peer energy trading on the platform.