Carbon Markets
Practical guidance on navigating carbon markets from a London perspective, covering UK compliance regimes, voluntary markets, transactional and regulatory risks, and a checklist for corporates and investors.
Our London office at Holborn Gate, 330 High Holborn, London, WC1V 7QH, England, advises corporates, investors and project developers on the evolving landscape of carbon markets. This note summarises the principal market types, the key legal and commercial risks in England and Wales and internationally, and practical steps market participants should consider when buying, selling or structuring carbon-related instruments.
Overview: UK and international carbon markets
Carbon markets operate on two broad planes. Compliance markets, such as the UK Emissions Trading Scheme (UK ETS), set mandatory caps and allocate or auction allowances to regulated entities. Voluntary carbon markets enable organisations to purchase credits to offset emissions or meet internal net-zero targets. International mechanisms under Article 6 of the Paris Agreement facilitate cross-border transfers of mitigation outcomes, while sectoral schemes such as CORSIA govern aviation emissions.
Key legal and commercial issues for market participants
Participants should consider a range of issues spanning regulatory compliance, transactional documentation and reputational risk:
- Regulatory scope and compliance obligations: determine whether activities fall within the UK ETS or other mandatory regimes in the jurisdictions where you operate; ensure registrations, monitoring, reporting and surrender obligations are met.
- Quality, additionality and permanence: for voluntary credits, assess project methodology, additionality, permanence and reversal risk; consider how permanence is addressed contractually and technically.
- Chain of custody and title: establish clear transfer mechanisms, audit trails and ownership records to avoid double-counting and disputes over title.
- Contractual protections: include robust warranties and representations on credit vintage, registry status, third-party verification, and compliance with applicable standards; allocate risk for non-delivery, invalidation and force majeure.
- Cross-border issues and Article 6 transfers: require clarity on authorisation, corresponding adjustments and tax/foreign exchange consequences for cross-border transfers.
- Disclosure and governance: incorporate carbon positions into governance frameworks, climate disclosures and assurance processes to manage investor and regulatory scrutiny.
- Tax, accounting and financial reporting: consider VAT, corporation tax, accounting treatment of credits and any implications for financial instruments or derivatives referencing carbon prices.
- Data, privacy and cybersecurity: protect registries and transaction data; vet digital platforms and tokenisation schemes for operational resilience and legal compliance.
Practical checklist for buying, selling or developing carbon projects
- Confirm the regulatory regime and any mandatory obligations in each relevant jurisdiction.
- Conduct legal due diligence on registries, project developers and counterparties.
- Verify credit standard, vintage, and verification/validation reports.
- Agree transfer mechanics, including registry entries and effective date of title transfer.
- Negotiate robust contractual protections: reps, warranties, indemnities and remedies.
- Address permanence, reversal and liability for invalidation or double-counting.
- Consider tax, accounting and FX consequences; seek specialist input where necessary.
- Establish disclosure procedures and monitor evolving regulatory guidance.
Jurisdiction and sources
Primary official sources for legal and regulatory developments include:
- UK Government (gov.uk) – guidance on the UK ETS and climate policy.
- Department for Energy Security and Net Zero (DESNZ) – policy and consultations.
- UNFCCC – Paris Agreement and Article 6 documentation.
- International Civil Aviation Organization (ICAO) – CORSIA rules and guidance.
- European Commission – for comparison with the EU ETS and cross-border considerations.
Market rules and standards evolve rapidly. Engage specialist legal, tax and technical advisers early in transactions and project design to limit regulatory, contractual and reputational exposure.
General information only; not legal advice and not a substitute for advice on a particular matter.
Bring the question into focus.
Contact the London office with a high-level, non-confidential outline of the issue. We can discuss the appropriate next step.