How much can green hydrogen really contribute by 2030?
The short answer: a meaningful but still modest share. In 2020, clean hydrogen (green hydrogen made from renewables plus blue hydrogen from fossil fuels with carbon capture) accounted for less than 0.1% of global total final energy consumption [5]. To stay on a 1.5°C climate pathway, the International Renewable Energy Agency (IRENA) says that share must reach 3% by 2030 and 12% by 2050 [5]. That means producing 154 million tonnes of clean hydrogen and its derivatives in 2030, up from just 0.8 million tonnes in 2020—a nearly 200-fold increase [5]. Eleven countries, including Australia, the US, Germany, and Chile, are expected to be top producers, together making about 16 million tonnes of green hydrogen by 2030 [5]. So while the growth is dramatic, green hydrogen will still be a niche player in the overall energy system by 2030.
The European Union is betting heavily on green hydrogen as part of its response to the 2022 energy crisis. The REPowerEU plan, launched after Russia's invasion of Ukraine, explicitly aims to build a green hydrogen economy to help decarbonize industry and replace Russian fossil fuels [1]. The EU has also signed deals with countries like Azerbaijan, Morocco, and Namibia to import green hydrogen, and is building a pipeline (H2MED) to bring hydrogen from North Africa to Europe [1]. This shows that policy momentum is real, but the infrastructure is still being built.
What are the biggest obstacles to scaling up?
The main barriers are cost and infrastructure. A study on South Africa found that 80% of respondents identified the lack of hydrogen storage and transportation infrastructure as a major obstacle [2]. High production costs were also a key challenge [2]. This is echoed in a review of green hydrogen globally, which notes that while green hydrogen has a 66–95% potential to reduce global warming when integrated with other renewables, scalability is held back by the cost of electrolysis, storage limitations, and the need for better catalysts and materials [4]. The same review estimates that widespread adoption could cut anticipated climate mitigation costs by $10–15.7 trillion over the coming decades, but only if these technical and economic hurdles are overcome [4].
Another challenge is the material politics of building hydrogen hubs. A study of Australian industrial regions promoted as 'green hydrogen hubs' found that these projects face conflicts over land use, competing regional interests, and the physical limitations of hydrogen itself—it is difficult to store and transport, which forces companies to hedge their bets rather than commit fully [3]. So even where there is political will and investment, the transition is far from orderly.
Where does green hydrogen make the most sense?
Green hydrogen is not a one-size-fits-all solution. It is best suited for sectors that are hard to electrify directly, such as heavy industry (steel, chemicals), long-haul trucking, shipping, and aviation. A study on Portugal found that converting buses and trucks to hydrogen fuel is better for reducing CO2 emissions than using hydrogen for power generation, but that using hydrogen in thermoelectric plants offers better energy security [6]. The same study showed that an aggressive hydrogen scenario would cost at least 5% more than a moderate one, so the economic trade-offs are real [6].
In South Africa, strategic ports like Coega and Saldanha Bay are being positioned as hubs for green hydrogen production and export, leveraging the country's abundant solar and wind resources [2]. This reflects a broader trend: countries with strong renewable energy potential are looking to produce green hydrogen not just for domestic use but for export to energy-hungry regions like Europe [1][2]. So green hydrogen's role will be as a complement to renewables, not a replacement.
About These Sources
This answer is built on 6 peer-reviewed studies — published from 2023 to 2025, 3 from 2024 or later, 2 in Q1 journals, collectively cited 178 times — selected as the most relevant from 6 studies that passed quality screening, drawn from 53 papers retrieved from a database of over 500 million.
Sources used in this answer
The EU Energy Crisis and a New Geopolitics of Climate Transition
The EU's 2022 energy crisis, triggered by Russia's invasion of Ukraine, led to a securitization of the green transition, with massive subsidies and policy packages like REPowerEU that explicitly include building a green hydrogen economy. The EU also signed multiple international deals to import green hydrogen, reflecting a more realpolitik approach to external climate action.
South Africa clean energy transition: The future of green hydrogen energy technology
In a mixed-methods study in South Africa, 83.5% of participants recognized green hydrogen's importance for the country's energy future, but 80% cited lack of storage and transport infrastructure as a major obstacle. Strategic ports like Coega and Saldanha Bay are key for production and export.
Green hydrogen regions: emergent spatial imaginaries and material politics of energy transition
A study of Australian industrial regions promoted as 'green hydrogen hubs' found that such projects face conflicts over land use, competing regional interests, and the physical limitations of hydrogen (difficult to store and transport), leading to hedging tactics by established firms.
Green Hydrogen: Pathway to Net Zero Green House Gas Emission and Global Climate Change Mitigation
A review found that green hydrogen has a 66–95% potential to reduce global warming when integrated with other renewables, and could cut anticipated climate mitigation costs by $10–15.7 trillion over coming decades. Key barriers are electrolysis cost, storage, and scalability.
2030 Ambitions for Hydrogen, Clean Hydrogen, and Green Hydrogen
Clean hydrogen (green plus blue) made up less than 0.1% of global final energy consumption in 2020. To meet a 1.5°C pathway, this must grow to 3% by 2030 and 12% by 2050, requiring 154 million tonnes of clean hydrogen in 2030 (up from 0.8 Mt in 2020). Eleven countries are expected to produce about 16 million tonnes of green hydrogen by 2030.
Green Hydrogen and Energy Transition: Current State and Prospects in Portugal
A simulation for Portugal found that converting buses and trucks to hydrogen fuel is better for CO2 reduction, while using hydrogen in thermoelectric plants offers better energy security. An aggressive hydrogen scenario would cost at least 5% more than a moderate one.