Policy design for green hydrogen

Much uncertainty surrounds the cost-effective deployment of green hydrogen technologies. Policy must navigate this uncertainty when deciding on policies of support. However, evidence to guide this process is scattered across multiple disciplines. This paper collates findings from fields of economics, engineering, political economy and behavioural science. We propose a method of progressive elimination to navigate the disparate strands of literature and associated uncertainties. We demonstrate a method to identify likely timescales of cost-effective deployment and associated policy interventions, for electricity, space heat, transport and industrial applica-tions, conditional on assumed cost trajectories. The procedure proposed in this paper may be applied to many contexts and will be of increasing importance as decarbonisation constraints continue to bind.