Green bonds assurance

Our robust and independent approach gives issuers, underwriters and investors the confidence that green bonds are genuinely delivering on their intended impacts.

How we can help 

Our experts provide a comprehensive range of advisory and assurance services related to green bonds, including: 

  • Identifying eligible assets for green bonds 
  • Understanding the feasibility of proposed issuances, potentially contentious areas, and market precedents
  • Developing robust green frameworks for issuances 
  • Providing objective second opinions and assurance reports 
  • Supporting investor roadshows 
  • Reporting impact against environmental performance indicators 

Why the Carbon Trust? 

The Carbon Trust is recognised as a world-leading expert in assessing the environmental impact of organisations and projects. 

We are an approved Climate Bonds Initiative verifier and an experienced external reviewer and provider of second opinions in accordance with the International Capital Market Association’s Green Bonds Principles

Our team has deep technical knowledge spanning a range of sustainable asset classes including clean energy, low carbon buildings, industrial energy efficiency, waste management, low carbon transportation, and water management. 

Who we’ve worked with


Green bond feasibility study and assurance 

CDMX, Ciudad de Mexico 

Green bond second opinion and impact reporting 

Star Energy 

First corporate green bond issuance in Indonesia 


The Carbon Trust has a fantastic reputation for its work in sustainable assets. Now, as a licensed verifier under the Climate Bonds Standard, I am delighted that it is bringing that expertise to this urgent and growing market. 

Sean Kidney, CEO, Climate Bonds Initiative 

Stakeholder insight on second-party opinions

A roundup of stakeholder views for a joint workshop with the Impact Investing Institute.

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Stakeholder report cover

Find out more and speak to one of our experts

Get in touch to discuss the best solution for your business and how we can help you achieve your sustainability goals.

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