What does the evidence actually show about hydrogen's potential?
The European Union sees hydrogen as a major energy carrier, potentially accounting for up to 20% of total energy, 20–50% of transportation demand, and 5–20% of industrial needs by 2050 [1]. However, a 2024 analysis in Applied Energy concludes that a hydrogen-based energy system will remain a vision for at least the next several decades, primarily because of unfavorable economics driven by high investment costs across the entire supply chain [2]. The overall efficiency of hydrogen chains is also only moderate, meaning significant energy is lost in production, storage, and conversion [2].
A historical analysis covering 1972 to 2020 found that despite growing academic publications, media coverage, and projects, progress toward an operating hydrogen economy has been discouragingly slow, with major mismatches between current reality and past milestones [4]. The study explicitly identifies hype cycles driven by specific events and actors, suggesting that current enthusiasm may be exaggerated [4].
Where does hydrogen actually make sense, despite the hype?
Hydrogen is most realistic for sectors where direct electrification is impossible or too expensive. The 2024 analysis identifies increasing opportunities in industry and transport where electrification is not feasible, as well as for energy storage in the electricity grid [2]. For example, in marine technology, using liquid hydrogen with superconducting propulsion systems can increase motor efficiency from 95% to 98% at full power, with even greater gains at partial load [3]. This synergy is already being explored in Norway for its maritime industry [3].
Green hydrogen also has strong potential in regions with abundant renewable resources. A 2025 study of Western and Southern Africa found that countries like South Africa, Namibia, and Ghana have significant technical potential for green hydrogen production and export, but success depends on region-specific approaches and international cooperation [5]. This suggests hydrogen could be a realistic export commodity for sun-rich and wind-rich regions, rather than a universal solution.
What are the biggest obstacles holding hydrogen back?
The main barrier is cost. The 2024 analysis emphasizes that high investment costs throughout the entire supply chain—from electrolyzers to storage to distribution—make green hydrogen economically uncompetitive for most applications [2]. Additionally, the full environmental benefit of hydrogen is only realized when it is produced from renewable energy, but Europe's expansion of renewable electricity generation has been insufficient to meet potential hydrogen demand, forcing many European countries to consider imports [2].
A 2022 viewpoint in Environmental Science & Technology directly asks whether the green hydrogen era is 'hope or hype,' highlighting that while hydrogen can play a role, the current excitement may outpace realistic deployment timelines [6]. The historical analysis reinforces this, showing that hydrogen has repeatedly failed to meet earlier milestones over five decades, suggesting structural challenges that hype alone cannot overcome [4].
Sources used in this answer
Power-to-hydrogen and hydrogen-to-X energy systems for the industry of the future in Europe
The EU projects hydrogen could supply up to 20% of energy, 20–50% of transport, and 5–20% of industrial needs by 2050, with power-to-hydrogen technologies enabling renewable energy storage and use.
On the future relevance of green hydrogen in Europe
A 2024 analysis concludes a hydrogen-based energy system will remain a vision for decades due to high investment costs, moderate efficiency, and insufficient renewable electricity expansion in Europe, making imports necessary.
Superconductivity and Hydrogen Economy: A Roadmap to Synergy
Using liquid hydrogen with superconducting propulsion in marine motors can increase efficiency from 95% to 98% at full power, with even greater gains at partial load, offering a realistic synergy for Norway's maritime industry.
A Historical Analysis of Hydrogen Economy Research, Development, and Expectations, 1972 to 2020
A historical analysis from 1972 to 2020 found that despite growing publications and projects, progress toward a hydrogen economy has been slow, with hype cycles driven by specific events and actors, and milestones far from being reached.
Assessing the feasibility of a green hydrogen economy in selected African regions with composite indicators
A 2025 study of Western and Southern Africa found that countries like South Africa, Namibia, and Ghana have significant technical potential for green hydrogen, but success requires region-specific approaches and international cooperation.
A Green Hydrogen Era: Hope or Hype?
A 2022 viewpoint questions whether the green hydrogen era is hope or hype, noting that while hydrogen has a role, current excitement may outpace realistic deployment timelines.