GREEN HYDROGEN IS DANISH HYDROGEN
GREEN HYDROGEN VALUE CHAIN The figure illustrates the green hydrogen value chain from a Danish perspective where the energy source is derived from renewable sources like wind and solar. Hydrogen functions as an energy carrier, crucial for balancing the energy system, and is transported through pipelines and stored in underground salt caverns. Additionally, hydrogen serves as a building block for hydrogen-based products, where hydrogen can be combined with either nitrogen for e-ammonia or carbon dioxide (CO₂) for e-methanol and e-kerosene. The Danish approach sees sectoral integration as key for the success of the full deployment of green hydrogen. This includes utilising excess heat from electrolysis in the district heating system and purifying wastewater for electrolysis.
ELECTRICITY PRODUCTION AND WATER SUPPLY
Electricity
Water
Purified water
Renewable energy
Water supply
Wastewater treatment
GREEN HYDROGEN PRODUCTION Electricity
Excess heat
Balancing the energy system
Electricity grid
District heating
Electrolysis
H2
GREEN DERIVATIVES PRODUCTION
CO2
Green hydrogen
N2
+
CO2 +
H2
N2
NH3
TRANSPORT AND STORAGE
NH3
H2 Further transformation
MeOH
e-ammonia
Nitrogen from atmosphere
e-methanol
MeOH
Trucks
Synthetic fuels and chemicals
MeOH
H2
H2
Pipeline
Sustainable carbondioxide
Storage
NH3
Shipping
CONSUMPTION AND USAGE NH3 Power-to-X
MeOH H2
Sector integration
*While direct electrification will be the dominant solution for zero-emission road transport in Denmark, Danish companies are today producing green hydrogen for use in e.g. taxis domestically. EU legislation means green hydrogen will be an important part of decarbonising all sectors of European transport.
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H2
MeOH
MeOH
Heavy road transport*
Aviation
NH3
Shipping
NH3
Fertiliser
Industries and chemicals
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