Leeds, United Kingdom

The H21 Leeds Citygate Project is a proposal to convert the existing natural gas network in Leeds to 100% hydrogen.

A detailed technical and economic study has determined that the project is feasible.

The finalised conversion area comprises 264,000 meter points, representing approximately 660,000 people.

The strategy involves producing hydrogen using Steam Methane Reformers using natural gas; sequestration of carbon emissions under the North Sea; salt cavern hydrogen storage to meet inter-seasonal and intraday demands; a hydrogen transmission system to connect the SMRs and salt caverns to the distribution network; and appliance conversion for the domestic, commercial and industrial sectors.

The combination of SMRs and carbon capture and storage (CCS) would provide a 73%

reduction in carbon emissions.