Category: Carbon market insurance · Reviewed by Simon Temme, Account Executive · Last reviewed 2026-06-10
Blue carbon insurance is a class of specialist cover that protects coastal and marine sequestration projects — principally mangrove, salt marsh and seagrass restoration — and the carbon credits they issue, against the principal physical perils affecting growth and permanence and against the integrity perils that affect credit value.
Category: Carbon market insurance Also known as: Mangrove carbon insurance, Coastal carbon insurance, Marine sequestration insurance Typical UK market form: Specie / parametric hybrid, with marine and political risk overlay Related concepts: Sequestration insurance, Reforestation insurance, REDD+ insurance
Blue carbon insurance is the cover that responds to losses arising from coastal and marine carbon sequestration projects. “Blue carbon” refers to the carbon sequestered in coastal and marine ecosystems, principally mangroves, salt marshes and seagrass meadows, which sequester carbon at rates an order of magnitude higher per hectare than equivalent terrestrial forests but which are exposed to a distinct peril set.
The product addresses two pools: the physical project (planted or restored vegetation, sediment, supporting infrastructure) and the carbon credits the project issues under a recognised methodology. In all respects beyond the peril set and the methodologies, the product is structurally similar to reforestation insurance.
Blue carbon projects are credited under voluntary standards. Verra (Verified Carbon Standard v4.7) operates a tidal wetland and seagrass restoration methodology (VM0033), updated through 2023 to broaden eligibility and refine baseline assumptions. Plan Vivo issues blue carbon credits through its community-based projects. Gold Standard for the Global Goals (v1.2) and the American Carbon Registry are increasingly active in the space. There is currently no recognised compliance market for blue carbon credits.
The Integrity Council for the Voluntary Carbon Market published its Core Carbon Principles, Assessment Framework and Assessment Procedure on 29 March 2023, with several blue carbon methodologies now subject to CCP assessment. The Voluntary Carbon Markets Integrity Initiative Claims Code of Practice (28 June 2023; v2 November 2024) shapes the buyer claims supported by blue carbon credits.
The principal physical perils insured are storm surge, cyclone, tsunami, sea-level encroachment, sediment loss, pest, disease and human encroachment. Mangrove projects are exposed to cyclone and disease loss; salt marsh projects to storm surge and sea-level change; seagrass projects to disease, dredging activity and water quality events. Reversal cover responds to loss of sequestered carbon, and invalidation cover responds to registry action — including methodology revision or sanction.
Specialist underwriters writing in this space include Kita Earth (Lloyd’s Lab Cohort 7, March 2022), CFC Underwriting (carbon credit invalidation product launched April 2023), Howden’s dedicated carbon insurance practice and Oka (founded 2023, Beazley Smart Tracker), together with parametric underwriters writing storm surge and cyclone triggers in support of blue carbon programmes. Many programmes carry a political risk overlay reflecting the concentration of blue carbon projects in coastal developing economies.
Cover periods are aligned with methodology permanence — typically 40 to 100 years — with renewable structures the market norm.
The United Kingdom has limited domestic blue carbon credit issuance to date. The Joint Nature Conservation Committee and the Marine Management Organisation are developing the policy framework, and the UK Saltmarsh Code was published in 2024 by the UK Centre for Ecology & Hydrology and partners as a draft for consultation. Issuance under the code is not yet at scale, but the framework is structurally aligned with the Woodland Carbon Code and the Peatland Code.
UK seabed and intertidal use is governed by the Marine and Coastal Access Act 2009 and the Marine (Scotland) Act 2010, with The Crown Estate and Crown Estate Scotland managing the relevant seabed leases. International blue carbon projects insured from the London market are typically subject to host-state coastal management law.
Communication of blue carbon outcomes is policed by the Competition and Markets Authority Green Claims Code (20 September 2021), enforced by the Advertising Standards Authority — see the rulings against Lufthansa (December 2023), Etihad (October 2022) and HSBC (October 2022) for the cumulative direction of travel on misleading carbon claims.
Per-risk capacity for blue carbon projects in the London market is generally lower than for terrestrial forestry, reflecting both the smaller scale of projects to date and the more limited actuarial base for coastal peril modelling. Parametric capacity has emerged as a relevant adjunct, with cyclone wind and storm surge triggers underwriting reversal risk on a basis that does not require time-consuming individual loss assessment.
An international NGO restores 3,500 hectares of mangrove in the Bay of Bengal, registered under Verra VM0033, with credits forward-sold to UK and European corporate buyers. Its London broker places blue carbon insurance combining named-peril cover for cyclone and disease, parametric cover for storm surge above a defined trigger, invalidation cover at the registry level, and political risk cover responding to host-state action affecting export or use of the credits.
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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