Equinor and Eni Next contributed to an $84m round for nuclear fusion technology startup Commonwealth Fusion Systems following a $115m series A last year.

US-based fusion energy technology developer Commonwealth Fusion Systems (CFS) secured $84m on Tuesday in a series A2 round featuring oil and gas suppliers Equinor and Eni.

The round was led by Temasek and included Devonshire Investors – part of investment and financial services group Fidelity – as well as Hostplus, Breakthrough Energy Ventures, Future Ventures, Khosla Ventures, Moore Strategic Ventures, Safar Partners, Schooner Capital, Starlight Ventures, The Engine and unnamed additional backers.

Eni took part through its Eni Next unit,…