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Recent cancellations of major green hydrogen projects, including bp's HyGreen Teesside and Air Products' Immingham plant, are prompting a reevaluation of hydrogen's role in the energy transition. Costs have increased and demand has decreased, limiting green hydrogen's application primarily to niche industrial uses rather than as a universal fuel.

The UK's Climate Change Committee has indicated that hydrogen has no role in building heating and only a limited function in surface transport. To achieve commercial viability, green hydrogen must be produced at competitive costs, currently estimated at £6.3/kg.

While some believe that hydrogen will follow the cost reduction trajectory of solar and wind energy, this comparison is flawed due to the significant electricity costs involved. Future progress in hydrogen adoption will depend on integration, policy stability, and strategic industrial partnerships.