1. Introduction

Hydrogen is increasingly treated as a strategic energy carrier for decarbonising sectors that are difficult to electrify directly, including steel, chemicals, shipping, heavy transport and certain industrial processes. However, low-carbon and green hydrogen generally face a cost disadvantage compared with conventional fossil-fuel-based hydrogen, particularly during the early stages of market development.

Hydrogen subsidy and support mechanisms therefore seek to reduce the cost gap, stimulate investment, create demand, develop infrastructure, encourage technological innovation and establish commercially viable hydrogen markets.

The legal design of these mechanisms is important because financial support can raise questions concerning State aid, subsidy disciplines, public procurement, competition, non-discrimination, environmental regulation, fiscal law and international trade law.

India's National Green Hydrogen Mission illustrates a comprehensive approach: its SIGHT programme provides incentives for electrolyser manufacturing and green-hydrogen production, while the Mission also supports pilot projects, hydrogen hubs, R&D, skills and enabling infrastructure. (Ministry of New and Renewable Energy)

2. Meaning of Hydrogen Subsidy

A hydrogen subsidy is a governmental financial or economic benefit provided to hydrogen producers, equipment manufacturers, consumers, infrastructure developers or other participants in the hydrogen value chain in order to achieve specified policy objectives.

A subsidy can take several forms:

Direct grants;

Production incentives;

Capital expenditure subsidies;

Tax credits;

Interest-rate support;

Viability-gap funding;

Contracts for Difference (CfDs);

Competitive procurement;

Purchase guarantees;

Green certificates;

Infrastructure grants;

Research and development funding;

Concessional financing;

Import-duty or tax concessions;

Government-backed offtake arrangements.

The objective is not necessarily to permanently subsidise hydrogen. Ideally, support helps the industry move from technology demonstration → commercial deployment → market competitiveness.

3. Why Hydrogen Requires Government Support

Hydrogen markets face several economic and legal barriers.

A. High production costs

Green hydrogen requires renewable electricity and electrolyser capacity. The resulting cost can initially be substantially higher than conventional hydrogen produced from fossil fuels.

B. High capital expenditure

Electrolysers, renewable-energy facilities, storage, pipelines, compression facilities and hydrogen terminals require substantial upfront investment.

C. Lack of demand certainty

A producer may be unwilling to construct a plant without a long-term purchaser, while an industrial consumer may be unwilling to invest without reliable hydrogen supply.

This creates a classic "chicken-and-egg" problem.

D. Infrastructure constraints

Hydrogen requires specialised infrastructure for production, compression, storage, transportation and distribution.

E. Technology risk

Electrolyser technology, hydrogen storage, transport and end-use applications continue to develop.

F. Carbon externalities

The market price of fossil-fuel-based hydrogen does not necessarily reflect all environmental costs associated with greenhouse-gas emissions. Government support can therefore be combined with carbon-pricing and emissions standards.

4. Major Types of Hydrogen Support Mechanisms

4.1 Capital Subsidies

Capital subsidies provide financial assistance for construction or acquisition of hydrogen-related assets.

Examples include:

electrolyser plants;

hydrogen storage;

pipelines;

refuelling stations;

renewable-energy facilities;

hydrogen hubs;

port infrastructure.

The subsidy may cover a specified percentage of eligible capital expenditure.

Legal significance

The legislation or scheme must clearly define:

eligible expenditure;

beneficiary eligibility;

project-selection criteria;

maximum subsidy;

monitoring requirements;

repayment/clawback provisions;

environmental conditions.

Capital subsidies are particularly useful where the principal barrier is initial investment rather than operating costs.

4.2 Production-Based Incentives

Instead of subsidising construction, governments can pay according to the quantity of hydrogen actually produced.

For example:

Government support = eligible hydrogen production × prescribed incentive per kg

This approach links public expenditure to actual production.

India's SIGHT Component II is an example of a production-oriented support mechanism under the National Green Hydrogen Mission. MNRE published the original Component-II guidelines in 2023 and subsequent tranche guidelines in 2024. (Ministry of New and Renewable Energy)

4.3 Tax Credits

Tax incentives reduce the tax liability of hydrogen producers.

The United States provides a major example through Section 45V of the Internal Revenue Code, introduced through the Inflation Reduction Act of 2022.

The credit is connected to the lifecycle greenhouse-gas emissions intensity of hydrogen production. The IRS explains that the credit is available for qualified clean hydrogen produced at a qualified facility during the applicable 10-year period. (IRS)

For 2025, the IRS states that the applicable amount ranged from $0.127 to $0.637 per kilogram, depending upon lifecycle emissions, subject to the statutory conditions. (IRS)

This demonstrates an important principle:

Support can be differentiated according to environmental performance rather than simply paying for hydrogen production regardless of its carbon intensity.

5. European Hydrogen Bank

The European Union has developed the European Hydrogen Bank as a financing instrument intended to create investment certainty and stimulate renewable-hydrogen production.

Its domestic pillar uses competitive auctions under which successful projects receive a fixed premium per kilogram of verified and certified renewable hydrogen. (Energy)

The first auction awarded almost €720 million to seven renewable-hydrogen projects, while a third auction conducted between December 2025 and February 2026 awarded more than €1 billion to nine projects across seven EEA countries. (Energy)

The mechanism is important legally because it shifts support from an open-ended subsidy toward a competitive, performance-linked allocation mechanism.

6. Contracts for Difference

A hydrogen CfD can guarantee a producer a predetermined support level relative to a reference market price.

Conceptually:

CfD payment = agreed strike price − reference market price

If the market price is below the agreed price, the government or designated counterparty pays the difference. If the market price rises above the reference level, the payment may fall or potentially reverse depending upon the contractual structure.

CfDs can therefore provide:

revenue certainty;

investment predictability;

reduced financing risk;

protection against volatile energy prices.

However, CfDs require carefully designed rules concerning:

reference prices;

duration;

production eligibility;

carbon-intensity criteria;

verification;

force majeure;

change in law;

termination;

clawback;

overcompensation.

7. Demand-Side Subsidies

Governments may subsidise hydrogen consumption rather than production.

For example, support may be provided to:

steel producers using green hydrogen;

shipping companies;

hydrogen-powered mobility;

fertiliser manufacturers;

refineries;

industrial users.

This creates guaranteed or stimulated demand and can encourage producers to invest.

India's National Green Hydrogen Mission also contemplates competitive bidding for demand aggregation and procurement of green hydrogen and green ammonia. (Ministry of New and Renewable Energy)

8. Hydrogen Purchase Guarantees

A government or government-backed entity may commit to purchase a specified quantity of hydrogen.

This reduces offtake risk.

A typical structure is:

Producer constructs facility.

Government or designated buyer enters a long-term agreement.

Buyer purchases qualifying hydrogen.

Producer obtains predictable revenue.

Public support gradually decreases as market demand develops.

This mechanism is especially relevant where private buyers are reluctant to sign long-term agreements because the technology and market are still developing.

9. Electrolyser Manufacturing Support

Hydrogen policy is not limited to hydrogen production.

Governments may support domestic manufacturing of:

electrolysers;

membranes;

catalysts;

stacks;

compressors;

storage equipment;

hydrogen refuelling equipment.

India's SIGHT programme specifically contains a component for incentivising electrolyser manufacturing, alongside its green-hydrogen production component. (Ministry of New and Renewable Energy)

Such support can pursue both climate and industrial-policy objectives.

However, local-content requirements create additional international-trade-law issues, discussed below.

10. Infrastructure Support

Hydrogen infrastructure often has high initial costs and uncertain utilisation.

Government support can therefore target:

pipelines;

hydrogen storage;

ports;

import terminals;

refuelling stations;

hydrogen hubs;

renewable-energy connections;

compression facilities.

India's National Green Hydrogen Mission includes support for hydrogen hubs and enabling infrastructure, as well as policy measures concerning renewable-energy transmission, banking, open access and connectivity. (Ministry of New and Renewable Energy)

11. Research and Development Support

Governments can finance R&D relating to:

advanced electrolysers;

hydrogen storage;

hydrogen carriers;

fuel cells;

hydrogen transport;

safety systems;

hydrogen-derived fuels;

carbon accounting;

certification.

R&D subsidies generally involve lower market-distortion risks than permanent production subsidies because they address technological knowledge gaps.

India's Mission includes R&D, pilot projects, standards and regulatory-development support. (Ministry of New and Renewable Energy)

12. Viability-Gap Funding

Viability-gap funding is designed for projects that are economically or commercially insufficient without public support but are expected to become viable under specified conditions.

The government contributes part of the financing gap.

This can be particularly useful for:

first-of-a-kind hydrogen plants;

hydrogen hubs;

storage projects;

transport infrastructure;

port facilities.

The legal agreement should establish measurable milestones and conditions for continued funding.

13. Green Hydrogen Certification as a Support Mechanism

Certification is not itself necessarily a subsidy, but it can determine eligibility for subsidies and market premiums.

Certification can establish:

production pathway;

renewable-energy source;

lifecycle emissions;

temporal matching;

geographical matching;

chain of custody;

quantity produced.

This prevents public funds from supporting hydrogen that does not satisfy the environmental objective of the programme.

The Indian National Green Hydrogen Mission expressly contemplates a certification framework for hydrogen and derivatives produced from renewable sources. (Ministry of New and Renewable Energy)

14. Legal Issues in Hydrogen Subsidies

A. State Aid and Subsidy Control

A major legal question is whether financial assistance constitutes prohibited or distortive state aid.

The relevant legal analysis generally asks:

Is there a governmental financial contribution?

Does it confer a benefit?

Is the beneficiary an enterprise?

Is the support specific?

Does it distort competition or trade?

Is the measure compatible with applicable exceptions?

B. International Trade Law

Hydrogen support can also fall within WTO disciplines.

The Canada — Renewable Energy dispute is particularly important by analogy.

The WTO examined Ontario's renewable-energy feed-in tariff programme and domestic-content requirements. The dispute concerned requirements favouring locally produced equipment. (World Trade Organization)

The Appellate Body's analysis also addressed the relationship between the SCM Agreement and national-treatment/local-content disciplines. (World Trade Organization)

Relevance to hydrogen

Suppose a country provides a hydrogen subsidy only if:

60% of electrolyser components are domestically manufactured.

Such a condition may raise international-trade concerns.

Therefore, hydrogen industrial policy must distinguish between:

legitimate environmental/performance conditions
and
potentially discriminatory local-content requirements.

15. Important Case Laws

Because hydrogen-specific reported case law remains comparatively limited, many of the most useful precedents arise from renewable electricity, environmental subsidies and energy-support schemes.

Case 1: PreussenElektra AG v Schleswag AG

Case C-379/98, Court of Justice of the European Union

Germany required electricity distributors to purchase renewable electricity at minimum prices.

The Court considered whether the arrangement constituted State aid and whether it conflicted with free-movement rules. The case is important because it demonstrated that the financing structure and involvement of the State are critical in determining whether a support mechanism constitutes State aid. (Global Judicial Portal)

Relevance to hydrogen

Hydrogen support schemes should clearly identify:

who provides the money;

who receives it;

whether public resources are involved;

whether a government-controlled entity is acting commercially;

whether the arrangement confers an economic advantage.

Case 2: Essent Belgium NV v Vlaams Gewest

Case C-492/14, CJEU, 29 September 2016

The case concerned regional support arrangements for renewable electricity and differential treatment depending upon the origin of electricity.

The Court considered free movement, renewable-energy support mechanisms and proportionality. (EUR-Lex)

Relevance to hydrogen

Hydrogen subsidies should be designed carefully where eligibility depends upon:

geographical origin;

renewable electricity source;

domestic production;

imported hydrogen;

certificates issued in another jurisdiction.

A support programme that discriminates against otherwise qualifying imported hydrogen may face legal challenges under applicable trade or internal-market rules.

Case 3: Essent Belgium — Green Certificates

Joined Cases C-204/12 to C-208/12

The Flemish scheme issued tradable green certificates to qualifying renewable-energy facilities and imposed obligations on electricity suppliers. The dispute involved refusal to recognise certain guarantees of origin from other Member States and the compatibility of the scheme with free movement of goods. (Infocuria)

Relevance to hydrogen

The case is particularly useful for analysing:

hydrogen guarantees of origin;

cross-border certification;

renewable-hydrogen certificates;

recognition of foreign certification;

discriminatory eligibility rules.

Case 4: Canada — Renewable Energy

WTO DS412 / DS426

Japan and the European Union challenged aspects of Ontario's renewable-energy feed-in tariff programme, particularly domestic-content requirements.

The WTO proceedings demonstrate that environmental support programmes may nevertheless be subject to WTO rules concerning discrimination and subsidies. (World Trade Organization)

Relevance to hydrogen

The case is highly relevant where hydrogen subsidy programmes include:

domestic-content requirements;

domestic procurement requirements;

local manufacturing incentives;

preferential treatment for domestic electrolysers.

16. Principles for Legally Sound Hydrogen Subsidies

A well-designed hydrogen subsidy framework should contain the following safeguards:

1. Clear eligibility

The law should define exactly what qualifies as:

green hydrogen;

renewable hydrogen;

low-carbon hydrogen;

clean hydrogen.

2. Technology neutrality where appropriate

Support should avoid unnecessarily favouring a particular technology unless there is a clear policy justification.

3. Carbon-intensity criteria

Support should preferably be linked to measurable lifecycle emissions.

4. Competitive allocation

Auctions and competitive bidding can reduce overcompensation and reveal the minimum level of public support required.

5. Transparency

Allocation criteria, subsidy amounts and monitoring requirements should be publicly understandable.

6. Additionality

Where renewable electricity is used, rules may require additional renewable generation or equivalent safeguards to prevent the subsidy from merely reallocating existing clean electricity.

7. Verification

Independent verification should establish:

production volumes;

emissions intensity;

renewable electricity use;

compliance with contractual conditions.

8. Clawback provisions

If a project receives excessive support or fails to satisfy eligibility requirements, the government may recover some or all of the subsidy.

9. Sunset clauses

Support should be capable of being reduced or terminated as the hydrogen market matures.

10. Non-discrimination

Eligibility rules should be carefully designed to comply with domestic constitutional principles and applicable international trade obligations.

17. Indian Legal Framework

India provides a particularly important example of an integrated hydrogen-support architecture.

The National Green Hydrogen Mission, launched in 2023, has an initial outlay of ₹19,744 crore, including ₹17,490 crore for the SIGHT programme. The Mission includes electrolyser manufacturing incentives, green-hydrogen production incentives, pilot projects, R&D, hydrogen hubs, skills and other enabling measures. (Ministry of New and Renewable Energy)

The SIGHT programme therefore represents more than a conventional subsidy. It is an industrial-policy and energy-transition framework combining:

production support + manufacturing support + demand creation + infrastructure + R&D + certification + skills.

MNRE continues to publish additional hydrogen schemes and guidelines, including support for innovative applications, hydrogen hubs, testing facilities, R&D and skills. (Ministry of New and Renewable Energy)

18. Comparison of Major Support Mechanisms

19. Key Legal Challenges

Hydrogen subsidies can generate several long-term legal questions.

Subsidy dependence

If subsidies remain indefinitely, hydrogen producers may become dependent upon public funding.

Overcompensation

If support exceeds the actual funding gap, public money may produce windfall profits.

Market distortion

Large subsidies can affect competing technologies and producers.

Cross-border discrimination

Domestic preferences may conflict with international trade rules.

Certification disputes

Different countries may apply different definitions of "green" or "clean" hydrogen.

Fiscal sustainability

Governments must determine whether subsidies can be maintained for the promised duration.

Regulatory uncertainty

Frequent changes to subsidy eligibility can undermine investor confidence.

20. Conclusion

Hydrogen subsidy and support mechanisms are central instruments for developing early-stage hydrogen markets. They can take the form of production incentives, capital grants, tax credits, CfDs, auctions, demand guarantees, infrastructure support, R&D grants and certification-linked premiums.

The current international landscape demonstrates several different models. India uses the National Green Hydrogen Mission and SIGHT programme; the EU uses the European Hydrogen Bank and competitive auctions; and the United States uses a tax-credit model based partly on lifecycle emissions intensity. (Ministry of New and Renewable Energy)

The principal legal lesson from renewable-energy case law is that environmental objectives do not automatically exempt subsidy schemes from competition, trade or internal-market rules. PreussenElektra, Essent Belgium, and Canada — Renewable Energy demonstrate the importance of financing structure, non-discrimination, proportionality, certification and domestic-content conditions. (Global Judicial Portal)

Consequently, a durable hydrogen-support framework should combine financial assistance with transparent eligibility rules, emissions verification, competitive allocation, proportionality, monitoring, clawback mechanisms and carefully designed sunset provisions. This allows public support to catalyse the hydrogen market while progressively moving the sector toward commercially sustainable operation.