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SYNE Ratings publishes first municipal Sustainability Rating for Governments

The rating supported a mid-sized city's first municipal green bond issuance, alongside a companion Second Party Opinion on the bond framework.

Product launch
8 September 2025
press@syneratings.com for media enquiries

SYNE Ratings today announced the publication of its first municipal Sustainability Rating for Governments, rating a mid-sized city ahead of its first municipal green bond issuance.

The rating assessed both the specific transit electrification programme the bond was raised to fund and the city's broader sustainability governance and public reporting practices, using SYNE's Sustainability Ratings for Governments methodology. A companion Second Party Opinion was issued on the bond framework itself, assessing it against the ICMA Green Bond Principles.

The city's green bond subsequently priced inside initial guidance, with the underwriter citing strong participation from dedicated ESG fixed-income funds as a contributing factor.

“Municipal issuers are a different animal from corporates - the governance questions are about public accountability and budget process, not board composition. Building a methodology that actually reflects that, rather than adapting a corporate template, was the point of this rating.”

Claire Dubois, Head of Government Ratings, SYNE Ratings
About SYNE Ratings

Company boilerplate.

SYNE Ratings is an independent provider of ESG, sustainability, carbon and supplier ratings, licensed across 71 countries. SYNE's ratings are built on a shared, published methodology and a common AAA–D grade scale, and are positioned on the SYNE Index - a two-axis benchmark combining standards alignment with data quality and assurance.

SYNE operates under the EU ESG Ratings Regulation (ESMA 2023/2631) and the FCA Code of Conduct, and has adopted equivalent voluntary codes in other markets including Singapore's MAS and Japan's FSA. SYNE Ratings is incorporated as SYNE Limited (United Kingdom and New Zealand), SYNE Australia Pty Limited, SYNE Ratings Private Limited (India), and SYNE Inc. (Canada and the United States).

Media contact: press@syneratings.com