Green Hydrogen: Costs, Infrastructure and the Road to Commercialisation

Green hydrogen — produced by splitting water into hydrogen and oxygen using electrolysis powered by renewable electricity — has captured the imagination of policymakers, investors and energy companies as a potential cornerstone of the global decarbonised economy. Unlike fossil-derived hydrogen, which accounts for the vast majority of current hydrogen production and carries a significant carbon footprint, green hydrogen produces no direct carbon emissions and could, if produced at sufficient scale and competitive cost, decarbonise a range of industrial processes, transport sectors and energy applications that are difficult to serve with direct electrification. The green hydrogen industry is at an early but rapidly developing stage, and the next decade will be critical in determining whether it achieves the commercial momentum necessary to fulfil its climate potential.

The Production Challenge: Electrolysis Economics

Electrolysis — the process by which an electrical current drives the decomposition of water into hydrogen and oxygen — is a well-established technology with a long industrial history. However, the specific application of electrolysis to green hydrogen production at scale using dedicated renewable electricity requires electrolysers that are larger, more efficient, more durable and significantly cheaper than those previously deployed in industrial niche applications. Three electrolyser technologies are currently competing for market position in the green hydrogen space: alkaline electrolysis, proton exchange membrane electrolysis and solid oxide electrolysis. Alkaline systems are the most mature and currently the most cost-competitive; PEM systems offer higher power density and better dynamic response to variable renewable power; solid oxide systems promise high efficiency but remain early-stage.

The current cost of green hydrogen production — typically in the range of $4 to $8 per kilogram in most markets — is significantly higher than grey hydrogen produced from natural gas with steam methane reforming, which costs $1 to $2 per kilogram in low-gas-price environments. Closing this cost gap is the central commercial challenge for the green hydrogen industry. The key levers are reducing electrolyser capital costs through manufacturing scale-up — already falling rapidly as companies like Nel, Plug Power, ITM Power and Chinese manufacturers scale production — and accessing lower-cost renewable electricity, which is the dominant input cost in green hydrogen production, representing 60 to 70 per cent of the levelised cost.

Policy Support, IRA Uncertainty and the Investment Landscape

Government policy has been essential in catalysing early investment in green hydrogen, given the current cost gap relative to fossil alternatives. The European Union’s Hydrogen Strategy targets ten million tonnes per annum of domestic green hydrogen production by 2030, supported by grants, production incentives and a regulatory framework for hydrogen certification. The US Inflation Reduction Act introduced a production tax credit of up to $3 per kilogram for clean hydrogen — a measure that materially improved project economics and attracted significant private capital commitments. However, the policy landscape in the United States has shifted considerably since 2025. Legislative changes under the current administration have introduced uncertainty around the longevity and qualification criteria of hydrogen tax credits, and analysts estimate that more than 75 per cent of green hydrogen projects under development in the US are now at risk of cancellation or indefinite delay as a result of this regulatory uncertainty.

The divergence between US and European policy trajectories is reshaping the global green hydrogen investment map. European developers and national energy companies — operating under more stable and long-term policy frameworks — are advancing projects with greater confidence, while some US-based developers are pausing or restructuring project pipelines to wait for greater regulatory clarity. Australia, with its abundant low-cost renewable resources and government export ambitions, and countries in the Middle East with access to cheap solar power, remain attractive locations for green hydrogen production that is not dependent on US policy support. The chicken-and-egg challenge of demonstrating offtake demand while securing supply infrastructure simultaneously remains the central commercial obstacle in all markets, irrespective of the policy environment.

Storage, Transport and Infrastructure

Even where green hydrogen can be produced economically, getting it to end users requires storage and transport infrastructure that does not yet exist at meaningful scale. Hydrogen presents significant engineering challenges as a fuel: it has a very low volumetric energy density in its gaseous form, requiring either compression to very high pressures, liquefaction to extremely low temperatures (minus 253 degrees Celsius), or chemical conversion into a hydrogen carrier such as ammonia, methanol or liquid organic hydrogen carriers for economical long-distance transport. Each of these options adds cost and complexity to the supply chain and introduces efficiency losses that reduce the overall energy yield of the green hydrogen system.

The repurposing of existing natural gas pipeline infrastructure for hydrogen transport is a cost-effective option in some cases, but requires careful materials assessment and may need modifications to address hydrogen embrittlement of steel, compressor seal compatibility and gas quality requirements. Several European gas transmission operators are developing dedicated hydrogen pipeline corridors and European Hydrogen Backbone proposals that outline a pan-European hydrogen transport network. Port-based hydrogen import terminals — analogous to LNG import facilities — are being designed in countries including Germany, the Netherlands and Japan to receive hydrogen carriers from low-cost production regions overseas.

Strengthening Capabilities in Renewable Energy Integration

The success of green hydrogen is closely tied to the broader expansion of renewable energy systems, as access to low-cost, reliable renewable electricity is the single most important factor in reducing hydrogen production costs. This creates a strong link between hydrogen development and the wider renewable energy ecosystem, including solar, wind and grid integration technologies. Professionals working in this space must therefore develop a comprehensive understanding of renewable generation, power markets and energy system optimisation. Many are enhancing their expertise through industry-focused Renewable Energy Training Courses covering hydrogen integration, power systems and low-carbon energy strategies to effectively support the transition toward a scalable and economically viable hydrogen economy.

End-Use Applications and the Path to Scale

The most commercially promising near-term applications for green hydrogen are those where hydrogen is already consumed — in ammonia production, oil refining and methanol synthesis — and where replacing grey with green hydrogen offers a clear decarbonisation benefit with manageable cost premium. These existing hydrogen demand centres provide an early market for green hydrogen that does not require the development of entirely new end-use applications or infrastructure. Over time, as costs fall and infrastructure develops, green hydrogen may expand into additional applications including direct reduction of iron ore for low-carbon steel production, hydrogen-fuelled heavy trucks and long-haul shipping, high-temperature industrial process heat and potentially, in cost-optimal long-duration storage configurations, power generation during periods of renewable energy scarcity.

The pace of green hydrogen market development will ultimately be determined by the interaction of technology learning curves, policy support intensity, infrastructure investment decisions and the evolution of competing low-carbon alternatives in target markets. Scenarios that require green hydrogen to play a transformative role in global decarbonisation by 2030 are almost certainly over-ambitious given the current state of the industry. However, scenarios that see green hydrogen as a niche or marginal contributor are equally unlikely to reflect reality, given the scale of capital and policy commitment already in motion. The most plausible outcome is a meaningful but geographically concentrated and application-specific green hydrogen market by 2030, with more rapid expansion toward a fully commercial hydrogen economy in the 2030s and 2040s.

Building Expertise for the Hydrogen Economy

As the green hydrogen sector evolves from early-stage development to large-scale commercial deployment, the need for specialised technical and strategic expertise is becoming increasingly critical. Professionals across engineering, project development and policy must understand not only electrolysis technologies, but also the complexities of hydrogen storage, transport infrastructure and end-use integration. Developing this multidisciplinary capability is essential for navigating the rapidly changing hydrogen landscape. Many industry professionals are therefore investing in advanced Hydrogen Training Courses focused on electrolysis technologies, infrastructure development and hydrogen economics to build the knowledge required to support successful project execution and long-term industry growth.

Conclusion

Green hydrogen holds genuine promise as a decarbonisation tool for industrial processes and transport applications that cannot be served by direct electrification. However, the path to commercialisation has proved more challenging than early optimism suggested. Cost reduction, infrastructure development and the demand-development gap all remain substantial obstacles, and political headwinds in the United States have significantly reduced the near-term project pipeline. The most realistic near-term markets are those with stable long-term policy support, access to very low-cost renewable electricity and existing industrial hydrogen demand. The organisations and professionals who develop deep expertise in green hydrogen technology, project economics and evolving policy landscapes today will be best positioned to lead this important but slower-than-expected transition.