Understanding the Difference Between ESG Ratings and ESG Reporting

|Kushagra
Understanding the Difference Between ESG Ratings and ESG Reporting

ESG reporting and ESG ratings often confuse investors and analysts. Serving different purposes, ESG reporting is what companies disclose, while ESG ratings are how third parties evaluate that disclosure. 

Environmental, Social and Governance (ESG) reporting refers to the structured disclosure of a company’s sustainability and governance performance. It helps investors assess how responsibly the company operates. ESG ratings interpret this data to assign scores. 

This distinction holds significance because while companies control reporting, ratings depend on third-party methodologies, leading to different outcomes for the same company. 

What is an ESG Rating?

An ESG rating assesses a company's long-term exposure to environmental, social, and governance risks. These risks, which include concerns like energy efficiency, worker safety, and board independence, have monetary consequences. ESG ratings are numerical scores, percentages, or letter grades that seek to offer a picture of an entity's exposure to environmental, social, and governance risks, as well as the effectiveness with which those risks are managed. 

ESG ratings are provided by third-party ESG rating providers based on publicly disclosed information and proprietary assessment models. For instance, global ESG evaluators include EcoVadis, widely used for supplier sustainability assessments and Dow Jones Sustainability Indices (DJSI), which benchmark listed companies on sustainability performance. 

Unlike ESG reporting, which is prepared by the company, ESG ratings are assigned by third-party agencies. Each of them uses different methodologies, weightages, and risk parameters. This is the reason why the same company can receive varying ESG scores across providers. 

Key ESG ratings providers relevant to Indian investors include: 

ESG Rating Agency

Focus Area

Key Approach

MSCI ESG Ratings

Industry-specific ESG risks

Evaluates how effectively companies manage financially material ESG issues within their sector

Sustainalytics ESG Ratings

ESG risk exposure and management

Provides a risk-based score measuring unmanaged ESG risk rather than performance

CRISIL ESG Ratings

India-centric ESG assessment

Combines global ESG frameworks with the Indian regulatory and market context

CDP ESG Ratings

Environmental transparency

Scores companies based on disclosure quality in climate, water, and forest-related data

EcoVadis ESG Ratings

Supplier sustainability 

Assesses procurement, labour, ethics, environment and sustainable sourcing 

These differing approaches make it essential for investors to understand how each rating is derived. It helps make well-informed judgments regarding companies in which they want to invest. 

ESG Ratings vs ESG Reporting

A quick side-by-side comparison of ESG reporting and ESG ratings to clarify how they differ in source, purpose, and usage. 

Basis 

ESG Reporting 

ESG Ratings 

Who produces it 

Companies themselves (internal disclosures) 

Third-party agencies like MSCI, Sustainalytics, CRISIL, CDP 

Who uses it 

Investors, regulators, stakeholders and internal management 

Primarily, investors, analysts and financial institutions

Data source 

Company-reported data based on ESG frameworks 

Public disclosures, proprietary models and external datasets 

Output format 

Detailed reports, disclosures, metrics, narratives 

Scores and ratings (example AAA-CCC, risk scores, letter grades) 

Frequency 

Usually, annual or periodic disclosures 

Updated periodically (quarterly, annually, or event-based) 

India relevance 

Mandatory for top-listed companies under the Business Responsibility and Sustainability Report (BRSR)

Not mandatory, used by investors for benchmarking ESG performance 

How ESG Reporting Feeds into ESG Ratings?

ESG reporting provides the raw data on a company’s performance. ESG rating agencies use this information to convert disclosures into comparable ESG scores and ratings. Here is how it goes: 

Company Disclosure 

Companies publish ESG reports such as the Business Responsibility and Sustainability Report (BRSR), disclosing data on environmental, social and governance performance. 

Analysis and Score Assignment 

ESG rating providers then analyse these reports, either with human analysts or AI, and give values using scoring methods, allowing various companies to be compared. To arrive at a score, an ESG rating agency may additionally check an entity's self-reported data and use other proprietary data sources.

End Use of Information

Customers, workers, investors, rating providers, academics, and regulators are among those who consume ESG reporting. ESG ratings, on the other hand, are almost solely employed by investors.

Major ESG Rating Agencies & What They Measure

ESG Rating Agency

Scale

What It Measures

MSCI

AAA to CCC

Assesses how well companies manage industry-specific ESG risks and opportunities

Sustainalytics

0 to 100+ (Risk Score)

Measures ESG risk exposure; a lower score means lower unmanaged ESG risk

CDP

A to D

Rates environmental transparency and performance in climate, water, and deforestation

CRISIL

0 to 100

Evaluates ESG practices aligned with the Indian regulatory and market context

EcoVadis 

0 to 100 (along with medal recognition)

Evaluates policies, actions and results as per the documented evidence

DJSI 

0 to 100

Measures corporate sustainability performance relative to sector peers using S&P Global CSA 

ESG Reporting vs ESG Rating Use Cases for Businesses and Investors

Companies primarily use ESG reporting as a compliance and strategy tool, while investors rely on ESG ratings for decision-making and risk assessment. 

How Companies Use ESG Reporting 

Corporate ESG reports are developed as per the structured frameworks like GRI, SASB, CSRD to disclose standardised data on emissions, governance, labour practices and risks. This data helps firms meet regulatory mandates, avoid penalties and demonstrate transparency to stakeholders. 

The reports also act as strategy dashboards for companies to: 

  • Track ESG KPIs

  • Set measurable sustainability goals

  • Identify operational inefficiencies 

  • Benchmark performance against peers for long-term value creation 

How Investors Use ESG Ratings

They use ESG ratings from agencies like MSCI or Sustainalytics, which convert complex disclosures into comparable scores. It helps in portfolio construction, faster screening and risk identification. Besides, it also serves to evaluate the company’s performance against industry peers and for long-term value assessment. 

Further, investors may use EcoVadis scores before onboarding suppliers for understanding performance and procurement risks. Additionally, tracking DJSI constituents would assist in identifying companies recognised for strong sustainability practices. 

Real-World Use Cases

Investment Screening and Benchmarking: A large institutional investor like Norway’s sovereign wealth fund uses AI-driven ESG screening to evaluate companies for risks such as forced labour or corruption. It is done before including them in its portfolio. Further, companies even withdraw investments after review if risks are flagged. 

Regulatory Reporting: Under the EU’s CSRD, Siemens submitted standard and audited ESG disclosures using ESRS metrics. These include emissions, governance and supply-chain impacts. The compliance has been achieved by Siemens by integrating ESG data systems across business units to ensure audit-ready reporting. 

How Oren Can Help

Oren improves ESG reporting quality by centralising fragmented ESG data like Scope 1, 2, 3 emissions, workforce, supply chain metrics and governance into a single AI-powered platform. Proceeding forward, this data is validated, standardised, and mapped directly to frameworks like GRI, BRSR, TCFD and CSRD. It reduces missing data, inconsistencies, and manual errors while ensuring audit-ready disclosures with full traceability. 

Beyond reporting, Oren provides ESG gap analysis, identifies missing or weak disclosure areas, and helps companies strengthen their ESG strategy by tracking key sustainability KPIs over time. The AI layer then automates validation, audit readiness, and report generation to improve data completeness, comparability, and transparency. It also helps companies strengthen disclosures and data quality relevant for external assessments such as EcoVadis and DJSI. 

As a result, Oren reduces reporting gaps and improves scoring accuracy across rating agencies, directly strengthening ESG rating outcomes. 

Key Takeaways

The key difference between ESG ratings and ESG reporting is control, as companies fully control the quality, structure and completeness of their ESG reporting. However, they do not control how ESG rating agencies interpret and score that data. 

Strong, standardised, and transparent reporting improves the inputs, but ratings depend on external methodologies, benchmarks and peer comparisons that remain outside a company’s control. This makes ESG reporting the most actionable lever for improving ESG perception, risk profile and investor confidence. 

Oren helps companies strengthen ESG outcomes by building robust ESG data systems, structuring disclosures across frameworks like BRSR, GRI, TCFD and CDP and identifying reporting gaps. We also ensure accuracy, completeness and consistency of ESG disclosures. Oren directly helps organisations enhance the foundation on which ESG ratings are built, leading to stronger and more credible sustainability positioning in the market.  

Frequently Asked Questions (FAQs)

Q1. What is the difference between ESG ratings and ESG reporting?

ESG reporting is a company-generated disclosure of its sustainability data. It can be voluntary or mandatory depending upon regulatory requirements and frameworks. ESG ratings are third-party evaluations that provide scores indicating risks and performance of the company. 

Q2. Who provides ESG ratings in India?

ESG ratings are provided by agencies like CRISIL ESG ratings, CareEdge ESG rating, NSE Sustainability Ratings and others. 

Q3. Does better ESG reporting improve your ESG rating?

Better ESG ratings offer transparent, quantified and material data that can improve ESG ratings. They do so by lowering risks and improving corporate performance, which boosts scores.  

Q4. Is ESG rating mandatory for Indian companies?

ESG rating is not mandatory for Indian companies. However, BRSR is mandatory for the top 1000 listed Indian companies by market capitalisation as per SEBI regulations, which requires them to disclose standardised ESG data. 

Q5. Which ESG rating agencies operate in India?

Among numerous ESG rating agencies operating in India, a few of them are CRISIL (S&P Global), NSE Sustainability Ratings and Analytics Limited, PGS Impact Private Limited and others. 

Q6. How is an ESG score calculated?

ESG scores are calculated by rating agencies using company disclosures, filings, surveys, and external data. ESG indicators like emissions, governance, and safety are standardised, weighted, and combined to form a final overall ESG score. 

Q7. What frameworks are used for ESG reporting in India?

Business Responsibility and Sustainability Report (BRSR) is a mandated framework for ESG reporting by SEBI for the top 1000 listed entities. It is based on the nine principles of the National Guidelines for Responsible Business Conduct (NGRBC). 

Q8. Can a company improve its ESG rating without a rating agency?

A company can improve ESG ratings by working on the inputs that determine the score. External services can assist in improving the inputs by enhancing ESG data quality, filling reporting gaps, ensuring framework alignment and strengthening disclosures. 

Q9. What is the difference between ESG rating and ESG score?

An ESG rating is often a category like AAA to CCC or other similar metrics. The ESG score meaning refers to a numerical value derived from underlying ESG data. Scores are converted into ratings for easier investor interpretation and benchmarking. 

Q10. How does BRSR reporting relate to ESG ratings?

BRSR provides structured ESG disclosures required by SEBI for Indian listed companies. ESG rating agencies use this data as a primary input to assess performance, risk exposure and governance quality while calculating ESG scores and ratings.

Kushagra

About the author

Kushagra

Senior ESG & Sustainability Advisor

Kushagra is a Senior ESG & Sustainability Advisor at Oren with 8+ years across CSR and sustainability consulting, specialising in GHG accounting, ESG strategy, and regulatory reporting across India, the UAE, and the Middle East.

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