Category: Transition risk · Reviewed by Simon Temme, Account Executive · Last reviewed 2026-06-10
Oil and gas transition risk is the set of financial, regulatory, reputational and litigation exposures faced by upstream, midstream and downstream hydrocarbon operators as the United Kingdom and global economies transition to net zero greenhouse gas emissions, with consequences for asset valuations, insurance availability and director liability.
Category: Transition risk Also known as: Upstream transition risk, Hydrocarbons transition exposure, O&G climate risk Typical UK market form: Energy package policies (operators’ extra expense, control of well), D&O, EIL, decommissioning bonds Related concepts: Stranded assets insurance, Coal mining transition liability, Regulatory transition insurance
Transition risk in the oil and gas sector refers to the financial and legal exposures created by the shift away from hydrocarbons. The Bank of England’s 2015 Carney speech identified three categories of climate-related financial risk: physical, transition and liability. For oil and gas operators all three converge — physical risk from weather and sea-level changes affecting installations; transition risk from policy and market change; and liability risk from claimants seeking damages for climate harm or breach of duty.
In practice, oil and gas transition risk is reflected in tightened licensing regimes, reduced bank and insurance appetite, accelerated decommissioning obligations, and an escalating tempo of climate-related shareholder and judicial review litigation.
UK upstream operations are regulated by the North Sea Transition Authority (NSTA, formerly the Oil and Gas Authority) under the Petroleum Act 1998, with decommissioning security provided under Part 4 of that Act. The Energy Act 2016 strengthened decommissioning oversight, and the Energy Act 2023 introduced further provisions on carbon capture, storage and hydrogen networks. The Environmental Permitting (England and Wales) Regulations 2016 (SI 2016/1154) regulate downstream installations, and the offshore environmental regime is administered by the Offshore Petroleum Regulator for Environment and Decommissioning (OPRED).
Pollution liability is governed by the Environmental Damage (Prevention and Remediation) (England) Regulations 2015 (SI 2015/810) — implementing the retained EU Environmental Liability Directive 2004/35/EC — together with the Water Resources Act 1991 and the Environmental Protection Act 1990 Part IIA contaminated land regime. The Environment Act 2021 imposes statutory environmental targets and established the Office for Environmental Protection. The Climate Change Act 2008 (2050 Target Amendment) Order 2019 (SI 2019/1056) sets the 2050 net zero target binding on government policy.
Carbon pricing is delivered through the UK Emissions Trading Scheme under the Greenhouse Gas Emissions Trading Scheme Order 2020 (SI 2020/1265). Fiscal exposure has also intensified through the Energy (Oil and Gas) Profits Levy Act 2022 and subsequent amendments.
UK oil and gas operators typically purchase energy package policies covering physical damage, operators’ extra expense (control of well, redrilling, seepage and pollution), and business interruption. Standard wordings often include sudden-and-accidental pollution sub-limits but typically exclude gradual pollution, which must be picked up through standalone Environmental Impairment Liability (EIL) policies written by markets such as Chubb Premier Casualty, AIG Environmental, AXA XL Environmental, Beazley Environmental and Liberty Environmental.
D&O cover for directors is critical given the rising volume of climate-related shareholder action. Insurers writing this segment include AIG, Chubb, Allianz, Beazley and Liberty. UK operators increasingly find that insurers and reinsurers apply ESG-linked underwriting, with several Lloyd’s syndicates having announced restrictions on coverage for new thermal coal, Arctic energy and oil sands projects from 2030 onwards. Decommissioning bonds and surety facilities, often required by NSTA, are written by specialist markets and may be increasingly costly as residual mine and well populations shrink.
UK climate litigation has crystallised in several ways relevant to oil and gas. In R (Finch) v Surrey County Council [2024] UKSC 20, the Supreme Court ruled on 20 June 2024 that an environmental impact assessment for the Horse Hill oil well must consider downstream Scope 3 combustion emissions. The decision has implications across UK upstream planning and licensing decisions. R (Friends of the Earth Ltd) v Secretary of State for Business, Energy and Industrial Strategy [2022] EWHC 1841 (Admin) quashed the UK Net Zero Strategy, forcing the publication of a revised strategy.
In ClientEarth v Shell plc [2023] EWHC 1137 (Ch), the High Court dismissed (12 May 2023) a derivative claim under Companies Act 2006 ss.172 and 174 alleging that Shell’s directors had failed in their duties on climate risk; permission to appeal was refused on 24 July 2023 ([2023] EWHC 1897 (Ch)). In the Netherlands, the Hague District Court in Milieudefensie et al v Royal Dutch Shell (C/09/571932, 26 May 2021) ordered Shell to reduce group emissions by 45% by 2030; the decision was partially overturned on appeal in November 2024 but established the international legal landscape against which UK boards must now manage exposure.
Operators should map transition exposures across the asset lifecycle (exploration, development, production, decommissioning), and ensure D&O, EIL and decommissioning programmes are coordinated. TCFD-aligned reporting under the Companies (Strategic Report) (Climate-related Financial Disclosure) Regulations 2022 (SI 2022/31) is mandatory for many companies and is a key underwriting input. Supply chain contracts should include climate-related representations and warranties to allocate risk among joint venture partners.
A UK operator of a North Sea field reaches Final Investment Decision on a tieback project. Following the Finch judgment, the operator’s environmental statement is challenged by judicial review. The operator’s D&O programme responds to defence costs of an associated derivative claim, while the bespoke decommissioning bond is repriced upwards by the surety market to reflect accelerated cessation of production assumptions.
This entry is part of the Apex Insurance Wiki. Last reviewed by Matt Bartlett on 2026-06-10. Next review: 2026-12-10.
Apex Insurance Brokers Limited. Authorised and regulated by the Financial Conduct Authority, FRN 724952. Registered in England and Wales, Companies House 07014570. This entry provides general information about UK insurance concepts and is not regulated advice. Consult your insurance broker on your specific position.
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