The Ince Strategy Team explores how the rise of ESG investing has shaped the development of ESG rating agencies.

▉ Introducing ESG Rating Agencies

Investors are increasingly relying on ESG rating agencies to assess a companies’ ESG risks and opportunities effectively. ESG agencies are considered robust measurement frameworks, whereby they evaluate and score companies based on their ESG performance. These agencies act as independent sources of information for investors and other stakeholders interested in understanding a company’s commitment to sustainability and responsible practices.

▉ Who are the Top 5 Global ESG Rating Agencies

There are several different ESG rating agencies, each with its unique approach to evaluating a company’s ESG performance, resulting in differences in how they rate companies. Thus, understanding the approach of the agency you are using is crucial.

▉ How do ESG ratings work

Many rating agencies use different methodologies to calculate ESG scores, assigning weights and metrics to different factors based on their own expertise and industry focus, and only some publicly disclose their approach.

* To note: ESG scores are tools to inform investor decisions and are not absolute judgements.

How ratings are typically generated:

  • Data Collection: agencies gather information from various sources like sustainability reports, news articles, surveys and direct contact with companies.
  • Framework: The evaluations are informed by several ESG factors. Different agencies use different frameworks and methodologies to ascertain their overall rating.
  • Score: Rating agencies evaluate companies based on their ESG performance resulting in a final score (numbers, letters or ratings).
  • Weighting: ESG rating agencies may assign weights to different ESG factors based on their materiality and importance to overall sustainability performance.
  • Reporting and communication: ESG agencies communicate their research findings to investors, companies and other stakeholders through reports, databases and other channels.

Investors depend on the accuracy of data ESG rating agencies provide to inform their investment decisions.

▉ What are the benefits of ESG rating agencies?

  • Reduce investment risk: ESG rating agencies critically analyse a company’s ESG practices, providing investors with insights into their sustainability efforts and potential risks.
  • Risk management: ESG ratings can help companies identify and mitigate ESG risks, improving resilience.
  • More stakeholder engagement: ESG rating agencies facilitate dialogue between companies and stakeholders, fostering trust and enhancing brand reputation.
  • Transparency and brand reputation: ESG rating agencies provide independent assessments of a company’s sustainability performance, and enable a company to understand its performance, which in turn can improve credibility and maintain reputation.
  • Access to capital: Companies with high ESG ratings often attract more investors, resulting in improved access to capital.

Corporations care more about being seen as sustainable businesses

▉ What are some challenges of ESG rating agencies?

Increasingly, there is discontent among investors and companies – where they are frustrated by the shortcomings of ESG ratings. Lack of standardization and consistency (unregulated landscape): Different agencies use different methodologies, metrics, and scoring systems, leading to discrepancies in ratings for the same company.

  • Quality and transparency: Oftentimes, the accuracy of the data and analysis is incorrect or misleading, which can result in a material financial impact for a company.
  • Time, effort, and money: Engaging with multiple rating agencies to correct errors or supplement data points can be expensive and time-consuming for companies, and at times, confusing.
  • Black box methodologies: This is a metaphor for a system or process where the internal workings are hidden. Many agencies don’t disclose their methodologies, or when they do, they are unclear. How do rating agencies expect companies to disclose data when they don’t disclose their internal how they calculate an ESG score?

▉ ESG rating agencies: The way forward

ESG rating agencies are here to stay – but if they continue to neglect the criticisms they have been receiving, they will ultimately hurt their credibility in the long run.

Rating agencies are facing regulatory pressures aiming to improve the accessibility, consistency, and comparability of ESG data for investors. They are being pushed by stakeholders to increase transparency by providing access to the full methodology behind the ESG ratings.


Connect with our Sustainability Team if you would like to know more >