What is Green Hydrogen?
Green hydrogen is hydrogen produced using renewable energy sources like wind, solar or hydroelectric power, making it an environmentally friendly option as it generates no greenhouse gases or pollutants during production.
How is green hydrogen made?
Green hydrogen is produced through electrolysis, a process where electricity splits water into hydrogen and oxygen using renewable sources like wind, solar or hydroelectric power.
During electrolysis, water is passed through an electrolyser, which applies an electric current to separate the hydrogen and oxygen atoms. The result is pure hydrogen gas with no carbon emissions, making it a clean and sustainable energy carrier. Green hydrogen is therefore seen as a key component in reducing greenhouse gasses and transitioning to a low-carbon energy system.
What is green hydrogen used for?
Hydrogen has been integral to industry since the early 19th century, powering cars, airships and spaceships. As the world moves toward a decarbonised economy, the role of green hydrogen will only grow with time.
Transport
Green hydrogen is used as a clean fuel for the transport industry, powering fuel cell vehicles like cars, buses and trucks, as well as finding a use in aviation and maritime transport.
Energy Storage
Green hydrogen serves as a means of storing excess renewable energy. It can be produced when supply of renewable energy is exceeding demand, and later converted back into electricity or used directly when renewable sources are insufficient, helping to stabilise the energy supply.
Industrial Processes
Green hydrogen can replace conventional hydrogen produced from fossil fuels used in industrial applications, such as producing ammonia for fertilisers, refining metals and manufacturing chemicals.
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5 organisations you should know leading green hydrogen
HydGene Renewables specialise in on-demand renewable hydrogen production from bio-waste. Using advanced biocatalyst technology, they convert plant-based feedstocks into high-purity, carbon-neutral hydrogen. Their modular, scalable solutions eliminate storage and transport challenges, supporting the decarbonisation of industries like farming, chemical manufacturing and transportation without relying on solar or wind power.
Plug Power
Plug Power Inc., based in Latham, NY, develops hydrogen fuel cell systems for equipment and electric vehicles. They offer hydrogen generation, storage and supply services and are expanding green hydrogen projects in Europe and the US, including collaborations with Lidl and Amazon.
Fuel cell Energy Inc.
FuelCell Energy Inc., based in Danbury, Connecticut, designs and operates Direct Fuel Cell power plants as eco-friendly power generation alternatives. It operates the world’s largest fuel cell parks in South Korea and North America, focusing on low-carbon technology to produce hydrogen from natural gas or biogas.
Bloom Energy Corp
Bloom Energy Corp., based in San Jose, California, designs and markets solid oxide fuel cells for clean, on-site electricity generation. The company is a leading green hydrogen provider with over 900 megawatts of installed capacity, and their fuel cells generate emission-free energy from pure green hydrogen.
Linde plc
Linde plc, the world’s largest industrial gas company, produces and distributes green hydrogen from its headquarters in Dublin and the UK. Linde uses wind and solar power for large-scale hydrogen production in Europe and the US, aiming to enhance hydrogen vehicle competitiveness.