Offshore renewable energy resources and their potential in a green hydrogen supply chain through power-to-gas

Offshore renewable energy resources have great potential to contribute to the global energy supply chain; however the LCOE of offshore power is still higher as compared to conventional power generation. With a growing interest in offshore resources and considering the capacity of offshore renewable...

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Bibliographic Details
Published in:Sustainable energy & fuels 2019-05, Vol.3 (6), p.1468-1489
Main Author: Gondal, Irfan Ahmad
Format: Article
Language:English
Subjects:
Artificial islands
Electric cables
Electric power
Electric power generation
Electrical transmission
Electricity
Electricity distribution
Electricity pricing
Electrolysis
Energy resources
Gas pipelines
Green hydrogen
Infrastructure
Methanation
Natural gas
Offshore energy sources
Offshore operations
Offshore pipelines
Power-to-gas
Renewable energy
Renewable resources
Substations
Supply chains
Sustainable yield
Transportation
Wind
Wind power generation
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Summary:Offshore renewable energy resources have great potential to contribute to the global energy supply chain; however the LCOE of offshore power is still higher as compared to conventional power generation. With a growing interest in offshore resources and considering the capacity of offshore renewable resources, they are anticipated to contribute a larger share of electric power in the next decade. The existing dispatch of offshore wind electricity through offshore substation and sub-sea cables increases the cost of offshore electricity manifold. The offshore wind electricity can be dispatched by conversion into hydrogen and transportation through existing offshore gas pipeline infrastructure. The study presents a novel idea of performing the methanation process entirely offshore by utilizing CCS in conjunction with electrolysis. A proposal of an artificial island that hosts the complete offshore power-to-gas is also presented. It has been found that the proposed arrangement can handle the offshore generated energy seamlessly and transport it to onshore demand centers through traditional natural gas pipeline infrastructure. Offshore renewable energies are proposed to generate green hydrogen through PEM electrolysis. Power-to-gas process can be used to store hydrogen gas in synergy with existing oil/gas exploration companies. Offshore CCS is thereafter used to assist in the production of synthetic natural gas entirely offshore.
ISSN:2398-4902
2398-4902
DOI:10.1039/c8se00544c