Sustainability Language

Sustainable Finance & Investment

Blue bond

A use-of-proceeds bond financing a sustainable ocean economy — green-bond principles applied to marine conservation, sustainable fisheries, offshore renewables and coastal resilience.

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Definition

A debt instrument — formally a subcategory of green bonds — whose proceeds finance projects contributing to a sustainable blue economy: marine ecosystem conservation, sustainable fisheries, marine pollution control, coastal adaptation, sustainable marine infrastructure and offshore renewable energy. Market practice is anchored in the 2023 global practitioner's guide developed by IFC, ICMA, the UN Global Compact, UNEP FI and the Asian Development Bank.

References

IFC

2023 multi-institution practitioner's guide; blue-economy typology and KPIs; SDG 14 link; guidance lineage (GBP, IFC Blue Finance Guidelines, ADB frameworks).

The Commonwealth

Eligible project categories; UNEP FI exclusion list; bluewashing risk controls.

Overview

What it means

Blue bonds follow the Green Bond Principles' core components (use of proceeds, project evaluation, management of proceeds, reporting), with added blue-specific eligibility criteria, KPIs and exclusions — deep-sea mining, unsustainable fishing and extractive activities are excluded — to guard against "bluewashing". Eligible categories map chiefly to SDG 6 and SDG 14.

Pioneering issues include the Seychelles' 2018 sovereign blue bond; issuance between 2018 and 2022 totalled around USD 5 billion. The same guidance family covers blue loans, the lending-market counterpart.

How it is used

Sovereigns, development banks, utilities and corporates issue blue bonds to fund ocean-positive projects; investors screen against the IFC/ICMA guidance and require impact reporting on ocean health indicators.

Why it matters

SDG 14 is among the least-funded goals; blue bonds create a recognised channel for capital-markets money into ocean health — provided eligibility criteria and impact metrics keep the label credible.

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