The Institute of Engineering Technology (IET) has assessed the viability of repurposing the UK’s gas networks for hydrogen use, warning that risks and uncertainties remain. The review, which was commissioned by BEIS, was published on Friday 14 June. The IET warned that a transition programme to hydrogen would cost around £23bn and, only if central and local government policy is in harmony with Ofgem, would ensure that a “stable funding environment” be guaranteed. Additionally, the IET said the UK needed to increase the present annual production volume for hydrogen by 981%.