EU ESG Ratings Regulation Explained

Ben Maconick

CMS: Partner

ESG ratings now influence trillions in capital but have long lacked clear rules. Join Ben Maconick from CMS, as he explains how the EU ESG Ratings Regulation brings transparency, oversight, and accountability. He also explains why it matters to providers, users, and companies.

Regulation and Initiatives

Subscribe to watch

Access this and all of the content on our platform by signing up for a 7-day free trial.

EU ESG Ratings Regulation Explained

14 mins 40 secs

Key learning objectives:

Explain what ESG ratings are and how they differ from ESG data
Understand why the EU has introduced a dedicated ESG ratings regime
Identify who is in scope, including non-EU providers and users
Recognise how the regulation changes transparency and accountability

Overview:

ESG ratings have quietly become core market infrastructure, shaping investment, lending, and corporate reputation worldwide. Yet unlike credit ratings, they developed without a regulatory framework, leading to opaque methodologies, conflicting scores, and growing mistrust.

The EU ESG Ratings Regulation is the most comprehensive attempt to bring order to this space. It introduces authorisation, governance, transparency, and conflict-of-interest rules for ESG rating providers, while also reshaping how ratings are used and challenged across the financial system. Crucially, its reach extends well beyond specialist agencies, capturing non-EU firms, financial institutions, and even rated companies themselves. It is vital to understand why regulators have intervened, and who falls within scope. It is also important for firms to understand the difference between plain ESG data and regulated ratings and be aware of the regulation’s extraterritorial reach. The new regime aims not to standardise scores, but to make them explainable, credible, and contestable.

Subscribe to watch

Access this and all of the content on our platform by signing up for a 7-day free trial.

Summary

What are ESG ratings and why do they matter now?
ESG ratings condense complex environmental, social, and governance information into scores, grades, or symbols that influence investment decisions, lending terms, insurance underwriting, and corporate reputation. As their use has expanded, weak or inconsistent ratings can materially affect access to capital, investor confidence, and public perception.

Why did regulators decide to intervene?
Unlike credit ratings, ESG ratings evolved without binding rules. Market studies revealed low correlation between providers, limited transparency over methodologies, and concerns about conflicts of interest. Given their growing role in capital allocation and regulatory disclosures, policymakers concluded that minimum standards were needed to protect market integrity.

What problems is the regulation trying to solve?
The regulation targets opacity, unmanaged conflicts of interest, and the systemic importance of ESG ratings. It does not aim to impose a single “correct” score. Instead, it requires providers to explain how ratings are built, what data is used, and why outcomes differ, allowing users and companies to understand and challenge them.

Who does the regulation apply to and how far does the reach extend?
It applies to EU-based ESG rating providers and to non-EU providers that actively distribute ratings to EU-linked entities, including banks, insurers, asset managers, listed companies, and public bodies. In some cases, ratings can fall within scope even when both provider and user are located outside the EU. The regulation has strong extraterritorial reach. Ratings linked to EU-listed securities or EU-regulated institutions may be caught even if produced or used overseas. Passive publication on a public website is not enough, but active distribution to EU-connected clients is.

How does this affect users and rated companies?
Users gain greater visibility into methodologies and more confidence when relying on ratings. Rated companies gain new rights to review ratings before publication and correct factual errors. Over time, ESG ratings move from black boxes to more transparent and accountable tools.

What is the difference between ESG data and ESG ratings?
ESG data reports facts, such as emissions figures or workforce statistics. ESG ratings apply a systematic methodology and ranking scale to turn that data into a comparative judgment. That structured assessment is what triggers regulation.

Subscribe to watch

Access this and all of the content on our platform by signing up for a 7-day free trial.

Ben Maconick

Ben Maconick is a partner in the CMS financial services team in London, where he advises clients on financial regulation. A key part of his work focuses on sustainability-related financial regulation and helping firms navigate the fast-changing rules in this space. He works on issues such as licensing and authorisation requirements, governance, conduct of business, prudential requirements, insider dealing and market abuse, cross border business, product design and the regulatory aspects of transactions.

There are no available Videos from "Ben Maconick"