Comparing Different ESG Rating Agencies and Their Methodologies

Robert Gultig

16 December 2025

Comparing Different ESG Rating Agencies and Their Methodologies

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Written by Robert Gultig

16 December 2025

Introduction:

The importance of Environmental, Social, and Governance (ESG) ratings has been steadily increasing in the business and finance world. With more companies and investors focusing on sustainability and ethical practices, ESG ratings agencies play a crucial role in assessing and ranking organizations based on their performance in these areas. According to a recent report by Sustainalytics, the global ESG market is expected to reach $1 billion by 2022, reflecting the growing demand for ESG insights.

Comparing Different ESG Rating Agencies and Their Methodologies:

1. Sustainalytics
Sustainalytics is a leading ESG ratings agency with a focus on providing research and ratings on environmental, social, and governance issues. The agency covers over 10,000 companies globally and assesses their performance based on various criteria.

2. MSCI ESG Research
MSCI ESG Research is known for its ESG ratings and research services, offering insights into how companies are managing ESG risks and opportunities. The agency’s ratings are widely used by investors to make informed decisions on sustainability.

3. ISS ESG
ISS ESG is a division of Institutional Shareholder Services (ISS) that provides ESG ratings and data to help investors integrate sustainability into their decision-making process. The agency’s ratings are based on a comprehensive analysis of companies’ ESG performance.

4. S&P Global Ratings
S&P Global Ratings is a well-known credit ratings agency that also offers ESG evaluations for companies. The agency’s ESG scores are used by investors to assess the sustainability and ethical practices of organizations.

5. Moody’s ESG Solutions
Moody’s ESG Solutions provides ESG scores and assessments to help investors evaluate companies’ sustainability performance. The agency’s ratings are based on a combination of quantitative and qualitative analysis.

6. FTSE Russell ESG Ratings
FTSE Russell is a leading provider of ESG ratings and indexes, offering insights into companies’ environmental, social, and governance practices. The agency’s ratings are used by investors to benchmark their ESG performance.

7. Refinitiv ESG Scores
Refinitiv is a financial data provider that offers ESG scores and ratings for companies worldwide. The agency’s ESG scores are based on a range of environmental, social, and governance factors.

8. CDP (formerly Carbon Disclosure Project)
CDP is a global environmental disclosure platform that helps companies and cities measure and manage their environmental impacts. The agency’s ratings are used by investors to assess companies’ climate change risks.

9. RobecoSAM
RobecoSAM is an investment specialist that focuses on sustainable investing and ESG integration. The agency’s ratings are based on an in-depth analysis of companies’ sustainability performance.

10. Vigeo Eiris
Vigeo Eiris is an ESG ratings agency that provides assessments of companies’ sustainability performance. The agency’s ratings are used by investors to evaluate companies’ ESG risks and opportunities.

11. Trucost, part of S&P Global
Trucost, a part of S&P Global, specializes in quantifying and analyzing companies’ environmental impacts. The agency’s data is used by investors to understand the financial implications of environmental risks.

12. ESGauge
ESGauge is an ESG ratings agency that focuses on assessing companies’ environmental, social, and governance practices. The agency’s ratings are used by investors to make informed decisions on sustainability.

13. RepRisk
RepRisk is a provider of ESG data and risk analytics, offering insights into companies’ exposure to ESG risks. The agency’s data is used by investors to assess companies’ reputational risks.

14. EcoVadis
EcoVadis is a platform that provides sustainability ratings for companies based on their ESG performance. The agency’s ratings are used by buyers to evaluate suppliers’ sustainability practices.

15. ISS Governance
ISS Governance is a division of Institutional Shareholder Services that focuses on corporate governance ratings. The agency’s ratings help investors assess companies’ governance practices.

16. DNV
DNV is a global assurance and risk management company that offers ESG services to help companies improve their sustainability performance. The agency’s assessments are used by companies to enhance their ESG practices.

17. V.E (formerly Vigeo Eiris)
V.E, formerly known as Vigeo Eiris, is an ESG ratings agency that provides assessments of companies’ sustainability performance. The agency’s ratings are used by investors to evaluate companies’ ESG risks and opportunities.

18. Sustainalytics (formerly Jantzi Research)
Sustainalytics, formerly known as Jantzi Research, is a leading ESG ratings agency that provides research and ratings on environmental, social, and governance issues. The agency’s ratings help investors make informed decisions on sustainability.

19. CDP (Carbon Disclosure Project)
CDP is a global environmental disclosure platform that helps companies and cities measure and manage their environmental impacts. The agency’s ratings are used by investors to assess companies’ climate change risks.

20. GRI (Global Reporting Initiative)
GRI is an international independent standards organization that helps companies report on their sustainability performance. The agency’s standards are widely used by companies to disclose their ESG practices.

Insights:

The ESG ratings landscape is becoming increasingly crowded, with numerous agencies vying for market share and influence. As investors place greater importance on sustainability and ethical practices, the demand for reliable ESG ratings is expected to continue growing. Companies that prioritize transparency and accountability in their ESG reporting are likely to attract more investors and stakeholders interested in sustainable investing. As the ESG market matures, we can expect to see more collaboration and standardization among ratings agencies to provide consistent and comparable ESG data for investors. According to a recent study by Morningstar, companies with strong ESG ratings have outperformed their peers in terms of stock performance, highlighting the financial value of sustainability practices.

Related Analysis: View Previous Industry Report

Author: Robert Gultig in conjunction with ESS Research Team

Robert Gultig is a veteran Managing Director and International Trade Consultant with over 20 years of experience in global trading and market research. Robert leverages his deep industry knowledge and strategic marketing background (BBA) to provide authoritative market insights in conjunction with the ESS Research Team. If you would like to contribute articles or insights, please join our team by emailing support@essfeed.com.
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