Carbon capture and storage (CCS) has emerged as an indispensable tool in the global effort to reduce greenhouse gas emissions. While the technological pathways for capturing, transporting, and storing CO₂ have advanced significantly, the widespread deployment of CCS hinges on robust legal and regulatory frameworks. These frameworks provide the certainty needed to attract investment, ensure environmental safety, manage long-term liability, and foster public acceptance. Without clear rules, even the most promising projects stall. This article examines the evolving legal and regulatory landscape supporting CCS worldwide, highlights key national and regional initiatives, and identifies the persistent challenges that must be addressed to unlock the full potential of this climate solution.

Countries pursuing CCS have developed distinct legal and regulatory approaches, but certain core components appear consistently. These include permitting and licensing requirements, environmental safeguards, liability regimes, and rules for cross-border CO₂ transport. International agreements, such as the London Protocol and the Paris Agreement, also exert significant influence by setting standards for marine dumping and national climate commitments.

Permitting and Licensing

A transparent and efficient permitting process is the foundation of any CCS regulatory system. Most jurisdictions require project developers to obtain a suite of permits covering site selection, construction, operation, and eventual closure. These processes typically mandate environmental impact assessments (EIAs), geotechnical evaluations, and safety plans. For example, the U.S. Environmental Protection Agency (EPA) administers the Underground Injection Control (UIC) program, which issues permits for CO₂ injection wells under the Safe Drinking Water Act. The Class VI well permit is specifically designed for geologic sequestration and requires detailed site characterization, injection zone testing, and a comprehensive monitoring plan. Streamlined permitting reduces project delays while ensuring that environmental risks are rigorously evaluated.

Liability and Financial Assurance

Long-term liability remains one of the most contentious issues in CCS regulation. Who is responsible if stored CO₂ leaks decades after injection? Legal frameworks address this through insurance requirements, financial assurance mechanisms, and the eventual transfer of responsibility to a government body. In the European Union, the CCS Directive (2009/31/EC) establishes that after a post-closure period of at least 20 years, and once the site is demonstrably stable, responsibility may be transferred to the member state. The Global CCS Institute notes that clear liability transfer provisions are critical for investor confidence (Global CCS Institute). Some countries require operators to set aside funds into a trust or purchase insurance policies that cover emissions offsets and remediation costs in the event of a leak.

Cross-Border CO₂ Transport

International transport of captured CO₂, often by ship or pipeline, introduces additional legal complexity. The London Protocol regulates the dumping of wastes at sea, and its 2006 amendment allowed for CO₂ storage under the seabed but restricted export of CO₂ for storage. However, a 2009 amendment now permits the export of CO₂ for sub-seabed storage, but it has not yet been ratified by all parties. This gap creates legal uncertainty for projects that involve shipping CO₂ across borders. In Europe, the EU CCS Directive provides a regulatory framework for transboundary transport, requiring bilateral agreements between member states. The International Energy Agency (IEA) emphasizes that resolving cross-border transport rules is essential for developing regional CCS hubs (IEA).

National and Regional Initiatives

European Union

The EU has been at the forefront of developing comprehensive CCS legislation. The CCS Directive (2009/31/EC) establishes binding rules for the entire CCS chain: capture, transport, and storage. Key provisions include mandatory site selection criteria, monitoring plans, and a requirement that storage operators hold a permit. The directive also sets standards for financial contributions to cover post-closure costs. Furthermore, the EU Emissions Trading System (ETS) provides an economic incentive by allowing CCS projects to generate emission allowances. Despite these frameworks, CCS deployment in Europe has been slower than anticipated, partly due to high costs and public opposition in some regions. The EU’s Innovation Fund, financed by ETS revenues, now provides substantial grants to support CCS and other low-carbon technologies (Innovation Fund).

United States

The United States offers a multi-layered regulatory environment. At the federal level, the EPA’s UIC Class VI program is the primary regulatory tool for CO₂ storage. The Bipartisan Infrastructure Law (2021) and the Inflation Reduction Act (2022) have dramatically expanded financial incentives, including the 45Q tax credit, which now provides up to $85 per metric ton of captured CO₂ stored permanently. On the liability side, the EPA requires operators to demonstrate financial responsibility through bonds, insurance, or other instruments. At the state level, many states have enacted their own CCS laws. For example, Texas and Wyoming have established regulatory frameworks for pore space ownership, while North Dakota has been a leader in permitting Class VI wells. The U.S. Department of Energy also supports large-scale demonstration projects, such as the CarbonSAFE initiative, which aims to develop commercial-scale storage complexes (U.S. DOE Carbon Storage Program).

Canada

Canada has developed a province-led approach to CCS regulation. Alberta, home to the world’s first commercial-scale CCS project, the Boundary Dam facility, has enacted the Carbon Capture and Storage Statutes Amendment Act. This act addresses pore space ownership, long-term liability, and the creation of a regulatory system for monitoring and verification. The province also established the Alberta Carbon Trunk Line, which connects emitters to a brine reservoir for storage. Saskatchewan has its own regulatory framework, with the Oil and Gas Conservation Act governing CO₂ injection. Federal policies, including the Clean Fuel Regulations and a carbon tax, provide additional economic drivers.

Norway

Norway has been a pioneer since the 1996 start of the Sleipner project, which stores CO₂ from natural gas production under the North Sea. The country’s legal framework for CCS is integrated into the Petroleum Activities Act and associated regulations. Norway is also a key player in the Northern Lights project, a cross-border, open-access CO₂ transport and storage facility. The Norwegian government has established clear rules for financial security, monitoring, and liability transfer, setting an example for other nations. The project is part of the broader European CCS network and is supported by the EU’s Connecting Europe Facility.

United Kingdom

The UK has accelerated CCS policy in recent years. The Net Zero Strategy and the Energy Act 2008 provide the legal basis for licensing offshore storage. The UK’s CO₂ Storage Licensing Authority (the Oil and Gas Authority) grants exclusive licenses for storage sites. The government also launched the CCS Cluster Sequencing process, identifying priority industrial clusters such as the East Coast Cluster and HyNet. The UK’s regulatory framework emphasizes a twin-track approach: financial support through Contracts for Difference (CfDs) combined with a robust licensing and monitoring regime. The UK Climate Change Committee highlights CCS as essential for meeting the nation’s 2050 net-zero target.

Japan

Japan has pursued CCS through the Act on Prevention of Marine Pollution and Maritime Disasters, which governs sub-seabed storage. The country’s Green Growth Strategy includes a goal of storing up to 120 million tons of CO₂ annually by 2050. Japan has also amended its laws to allow the government to designate “specified CO₂ storage projects” and to streamline permitting. The Tomakomai CCS demonstration project, which stored 300,000 tons of CO₂ from a hydrogen production plant, tested the regulatory framework and provided valuable lessons for future scaling.

International Agreements and Their Influence

International law creates both opportunities and constraints for CCS deployment. The London Protocol, as mentioned, governs the placement of CO₂ in sub-seabed geological formations. The 2009 amendment allowing export for storage has not yet entered into force, creating a de facto barrier for projects that rely on cross-border transport. The Paris Agreement does not explicitly mention CCS, but its framework for nationally determined contributions (NDCs) can incentivize countries to include CCS in their climate plans. The International Maritime Organization (IMO) is also developing guidelines for the transport of liquefied CO₂ by ship.

Despite progress, significant hurdles remain. These include:

  • Long-term liability uncertainty. Even in jurisdictions with transfer provisions, the conditions for liability transfer can be ambiguous. Investors worry about being held responsible for leaks that occur long after project closure.
  • Cross-border regulatory gaps. The lack of a harmonized international framework for CO₂ transport by ship or pipeline complicates the development of regional CCS hubs, particularly in Europe and Asia.
  • Public acceptance and community engagement. Many regulatory frameworks require public consultation, but communities often remain skeptical about storage safety. Clear communication of monitoring results and independent oversight can help build trust.
  • Monitoring, reporting, and verification (MRV). Robust MRV is essential for ensuring that stored CO₂ remains contained and for calculating emissions reductions. Regulations must specify monitoring technology, frequency, and reporting standards.
  • Economic incentives and cost coverage. While frameworks like the 45Q tax credit and the EU Innovation Fund provide support, many projects still face high upfront costs. Regulatory stability is crucial for attracting private capital.

To accelerate CCS deployment, governments and international bodies must address these challenges head-on. Several priorities emerge:

  1. Harmonize cross-border regulations. Ratification of the London Protocol amendments and development of bilateral agreements for CO₂ transport are critical. The International Energy Agency recommends creating a multilateral framework similar to that for natural gas pipelines.
  2. Clarify long-term liability. More countries should adopt clear liability transfer mechanisms, such as those in Norway and the EU, with well-defined post-closure periods and financial assurance rules.
  3. Streamline permitting. Governments should adopt one-stop-shop permitting processes that coordinate multiple agencies, reducing project delays without compromising safety.
  4. Integrate CCS into carbon markets. Linking CCS to emissions trading systems or carbon crediting mechanisms can provide a sustained revenue stream. The EU ETS and California’s cap-and-trade program already recognize CCS.
  5. Enhance public transparency. Mandatory public reporting of monitoring data and independent audits can alleviate concerns about storage integrity.

Legal and regulatory frameworks are not static; they must evolve alongside technological advancements and growing climate ambition. Countries that proactively design these frameworks will attract investment, build public trust, and position themselves as leaders in the clean energy transition. As the IEA and Global CCS Institute have repeatedly noted, policy clarity is as important as technological readiness. With strengthened legal foundations, CCS can move from a niche demonstration activity to a mainstream climate solution.