Introduction

Geoengineering refers broadly to deliberate large-scale interventions in Earth's climate or environmental systems intended to influence climate conditions. The two principal categories generally discussed are carbon dioxide removal (CDR) and solar radiation modification (SRM). CDR seeks to remove carbon dioxide from the atmosphere through methods such as direct air capture, enhanced weathering, afforestation or ocean-based approaches. SRM seeks to alter the amount of solar energy reaching or being retained by the Earth, for example through proposed atmospheric interventions.

The intersection between geoengineering and energy law arises because many geoengineering technologies require substantial quantities of electricity, land, minerals, transportation infrastructure, pipelines, storage facilities and industrial equipment. At the same time, some techniques could affect energy systems by changing climate conditions, reducing atmospheric carbon concentrations or altering the demand for cooling and other energy services.

There is currently no single comprehensive international legal regime governing all forms of geoengineering. Regulation is instead distributed across climate law, environmental law, marine law, energy regulation, international treaties, national permitting systems and general principles of international law.

Conceptual relationship between geoengineering and energy law

Energy law traditionally regulates the production, transportation, distribution and consumption of energy. Geoengineering introduces another dimension because climate intervention may influence both the supply and demand sides of energy systems.

For example, direct air capture requires significant energy input. Carbon capture associated with industrial facilities also requires electricity and heat. Hydrogen production may be integrated with carbon-management systems. Geological carbon storage requires pipelines, injection wells and monitoring infrastructure.

Consequently, energy regulation becomes relevant whenever geoengineering projects use or create critical energy infrastructure.

Carbon dioxide removal and energy systems

Carbon dioxide removal can involve technologies with substantial energy requirements.

Direct air capture is a prominent example. Air is processed through chemical or physical systems to separate carbon dioxide from atmospheric air. The captured carbon dioxide may then be compressed, transported and permanently stored or used.

The legal framework may therefore involve:

Electricity regulation.

Industrial licensing.

Carbon-storage regulation.

Pipeline regulation.

Environmental permits.

Land-use rules.

Water regulation.

Occupational safety.

The energy source used by a carbon-removal facility is also legally significant because a project designed to reduce emissions could produce limited climate benefits if its energy supply is highly carbon-intensive.

Carbon capture and storage

Carbon capture and storage (CCS) is particularly relevant to the energy sector because it can be associated with power generation, refining, natural-gas processing and industrial operations.

A CCS project generally involves three stages:

Capture of carbon dioxide.

Transportation of compressed carbon dioxide.

Geological storage and long-term monitoring.

Each stage can create separate legal responsibilities.

A comprehensive legal framework should define ownership of captured carbon dioxide, storage rights, monitoring obligations, leakage liability and post-closure responsibility.

Energy infrastructure and carbon transport

Large-scale carbon-management systems may require dedicated pipelines or shared transportation infrastructure.

This creates legal questions concerning:

Rights of way.

Pipeline construction.

Safety standards.

Third-party access.

Property rights.

Cross-border transportation.

Emergency response.

Environmental liability.

Where carbon dioxide is transported through infrastructure crossing multiple jurisdictions, international legal arrangements become increasingly important.

Geological storage and subsurface rights

Carbon storage requires suitable geological formations. This raises questions about ownership and control of underground formations.

A legal framework should determine whether storage rights belong to the State, landowner or another authorized entity.

It should also regulate:

Site characterization.

Injection permits.

Monitoring.

Pressure management.

Leakage detection.

Closure.

Post-closure monitoring.

Long-term liability is particularly important because carbon dioxide may remain underground for very long periods.

Environmental impact assessment

Geoengineering projects can have uncertain environmental consequences. Environmental impact assessment is therefore an important regulatory tool.

A project assessment can examine:

Direct environmental effects.

Indirect effects.

Cumulative effects.

Risks to ecosystems.

Water requirements.

Land impacts.

Air-quality effects.

Potential transboundary consequences.

The precautionary principle becomes particularly relevant where scientific uncertainty is substantial.

International environmental law

The Convention on Biological Diversity (CBD) has been important in international discussions concerning climate-related geoengineering. Decisions adopted under the CBD have encouraged caution concerning geoengineering activities that may affect biodiversity.

The London Convention and London Protocol are also relevant to certain forms of marine geoengineering and ocean-based carbon-management activities.

These instruments demonstrate that geoengineering cannot necessarily be treated solely as an energy or industrial activity.

Marine geoengineering

Ocean-based geoengineering can create particularly complex legal issues because marine areas may fall under different jurisdictional regimes.

The United Nations Convention on the Law of the Sea (UNCLOS) establishes duties concerning protection and preservation of the marine environment.

Large-scale marine interventions may therefore require consideration of:

Marine pollution.

Scientific research.

Coastal-State jurisdiction.

Transboundary environmental harm.

Environmental impact assessment.

Energy companies considering offshore carbon storage must therefore comply with both energy and marine environmental requirements.

Solar radiation modification

SRM presents a different legal problem from carbon removal.

Techniques such as proposed atmospheric aerosol interventions could potentially affect climate conditions beyond the jurisdiction of the State conducting the activity. This creates questions concerning transboundary harm, international responsibility and scientific governance.

Unlike CCS, SRM does not primarily involve energy infrastructure. Nevertheless, its potential effects on temperature, precipitation, agriculture and energy demand could have major consequences for energy systems.

Transboundary environmental harm

International environmental law generally recognizes that States should exercise their activities in a manner that does not cause significant environmental harm to other States or areas beyond national jurisdiction.

The Trail Smelter Arbitration (United States v. Canada) is a foundational comparative authority concerning transboundary environmental harm. It is not an energy case, but its principles are highly relevant to large-scale geoengineering.

The principle suggests that a State cannot necessarily treat a climate intervention as purely domestic when its consequences may extend beyond national borders.

Precautionary principle

Geoengineering involves substantial scientific uncertainty, particularly regarding large-scale climate interventions.

The precautionary principle supports regulatory caution where there is a risk of serious environmental harm despite incomplete scientific knowledge.

The International Court of Justice has discussed environmental risk and scientific uncertainty in cases such as Pulp Mills on the River Uruguay (Argentina v. Uruguay), Judgment, I.C.J. Reports 2010.

Although the case does not concern geoengineering, it provides useful guidance concerning environmental assessment and transboundary environmental risks.

Sustainable development

Geoengineering may potentially support climate objectives, but it can also create environmental, economic and governance risks.

The principle of sustainable development requires policymakers to consider environmental protection alongside economic and social objectives.

The comparative decision Vellore Citizens Welfare Forum v. Union of India, (1996) 5 SCC 647 recognized sustainable development and the precautionary principle. The decision is not binding outside India but provides useful comparative guidance.

Energy law and carbon-removal incentives

Governments may encourage carbon-removal technologies through:

Grants.

Tax incentives.

Carbon markets.

Contracts for difference.

Public procurement.

Research funding.

Infrastructure support.

However, legal frameworks should establish criteria for determining whether a project genuinely produces measurable and durable carbon removal.

Otherwise, financial incentives could support projects whose claimed climate benefits are uncertain.

Carbon accounting and verification

Carbon-removal projects require reliable measurement, reporting and verification.

A legal framework should establish standards for:

Baseline calculations.

Additionality.

Permanence.

Leakage.

Monitoring.

Verification.

Reporting.

These requirements are important because carbon-removal claims may influence regulatory compliance, carbon markets and investment decisions.

Energy-intensive geoengineering and additional emissions

An important legal issue arises when a geoengineering technology requires substantial energy.

For example, if a direct-air-capture facility obtains electricity from a carbon-intensive source, its gross carbon-removal figure may differ significantly from its net climate benefit.

Regulation should therefore consider lifecycle emissions rather than simply measuring the amount of carbon captured at the facility.

Liability

Geoengineering can create difficult liability questions because harm may occur years after an intervention.

A legal framework should identify responsibility for:

Accidental releases.

Storage leakage.

Pipeline failures.

Environmental damage.

Transboundary harm.

Monitoring failures.

Incorrect climate-impact assessments.

Insurance, financial-security requirements and operator-liability rules can help ensure that remediation costs do not automatically fall upon the public.

Public participation

Large-scale geoengineering projects can affect communities, land use, water resources and environmental conditions.

Environmental governance should therefore provide appropriate mechanisms for:

Public information.

Environmental consultation.

Stakeholder participation.

Administrative review.

Access to relevant environmental information.

Public participation becomes particularly important where the scientific consequences of a proposed intervention remain uncertain.

Research versus deployment

A significant legal distinction exists between research and large-scale deployment.

Small-scale scientific research may have substantially different risks from commercial or planetary-scale deployment.

A governance framework can therefore establish separate requirements for:

Laboratory research.

Controlled field experiments.

Pilot projects.

Commercial deployment.

Large-scale environmental intervention.

This graduated approach allows scientific research while limiting uncontrolled environmental risks.

Energy-sector regulatory institutions

Geoengineering projects connected with energy facilities may involve several regulatory institutions. Electricity regulators, petroleum authorities, environmental agencies, industrial regulators and land authorities may each have jurisdiction over different components.

Clear institutional coordination is therefore essential.

Comparative guidance can be found in PTC India Ltd. v. CERC, (2010) 4 SCC 603, concerning statutory authority in specialized energy regulation. The case is not binding outside India but demonstrates the importance of clearly defined regulatory powers.

Contractual governance

Large carbon-management projects may depend upon long-term agreements involving operators, technology suppliers, transport companies and storage operators.

Contracts should address:

Performance standards.

Carbon-removal guarantees.

Monitoring obligations.

Liability.

Regulatory changes.

Force majeure.

Storage failure.

Termination.

Dispute resolution.

Energy Watchdog v. CERC, (2017) 14 SCC 80 provides comparative guidance concerning contractual risk allocation in energy projects. It is not a geoengineering decision and is not binding in Kuwait or other jurisdictions outside India.

Competition and market regulation

If governments create financial incentives for carbon-removal technologies, market-regulation issues may arise.

A legal system should avoid allowing subsidies or exclusive infrastructure arrangements to unfairly exclude competing technologies without adequate policy justification.

Transparent eligibility criteria can help ensure that funding is directed toward projects providing measurable climate benefits.

Geoengineering and energy transition

Geoengineering should not automatically be treated as a substitute for reducing fossil-fuel dependence.

Carbon-removal technologies may complement emissions reduction where residual emissions remain difficult to eliminate. However, reliance upon speculative future removal could weaken incentives for immediate emissions reductions.

Energy law should therefore distinguish between:

Direct emissions reduction.

Energy efficiency.

Renewable-energy deployment.

Carbon capture.

Carbon removal.

Solar radiation modification.

Each category presents different legal and environmental characteristics.

International governance gap

One of the most difficult problems is the absence of a single comprehensive international treaty governing all geoengineering activities.

Different activities may fall under different legal regimes. This creates the possibility of regulatory fragmentation.

International coordination could establish common principles concerning:

Scientific research.

Environmental assessment.

Transparency.

Monitoring.

Data sharing.

Liability.

Public participation.

Transboundary effects.

Conclusion

The intersection between geoengineering and energy law is emerging as an important field of legal governance. Carbon-removal technologies such as direct air capture and carbon capture and storage are closely connected with energy infrastructure because they require electricity, industrial facilities, pipelines, geological storage and long-term monitoring. Solar radiation modification presents a different challenge because its potential effects can extend across national borders and affect global climate systems.

The legal framework must therefore combine energy regulation with environmental law, international climate law, marine law, land-use regulation and liability principles. Environmental impact assessment, the precautionary principle, transparent carbon accounting and long-term liability arrangements are particularly important.

Comparative authorities such as Trail Smelter, Pulp Mills, Vellore Citizens Welfare Forum and PTC India provide useful principles concerning transboundary environmental harm, environmental assessment, sustainable development and regulatory authority. These authorities should be treated as comparative guidance rather than as universally binding rules.

Ultimately, responsible geoengineering governance should ensure that climate interventions do not become a means of avoiding ordinary emissions reduction obligations. A coherent energy-law framework should encourage scientifically credible carbon-removal technologies where appropriate, while requiring rigorous environmental assessment, transparent monitoring, appropriate liability arrangements and international cooperation for activities capable of producing transboundary or global consequences.