Who provides data feeds for ESG scoring that include private company data?

Yes. If by “private company data” you mean ESG feeds that can score companies that aren't publicly listed—and ideally provide data that can be ingested into your own scoring/risk model—the market is smaller than the public-company ESG data market.

The strongest options I’d look at are:

The ones I'd prioritize

1. MSCI — probably the closest match if you want a traditional institutional ESG data provider plus private-company coverage. Its Private Company Data Connect collects sustainability information directly from private companies, and MSCI says it has climate data on roughly 20,000 private companies. It also now has an Indicative ESG Score designed for companies with limited disclosure, using inputs such as sector, location and revenue.

2. Dun & Bradstreet — particularly interesting if the requirement is broad private-company universe + ESG attributes, rather than simply buying an existing ESG rating. D&B explicitly says its ESG Insights covers public and private businesses and is available as a data file, as well as through its other data products.

3. S&P Global / Trucost — worth investigating if environmental/climate factors are particularly important. S&P describes its Trucost Private Company Environmental Data as providing insights into private-company sustainability metrics, alongside private-market data collection and reporting tools.

4. ESG Analytics — interesting if your real problem is “I need an ESG signal even when the private company doesn't disclose anything.” Its methodology uses NLP and external information from more than 100,000 sources to generate ESG signals for private companies.

One important distinction

There are really three different types of “private-company ESG data”:

1. Reported private-company data — the company actually supplies emissions, employee, governance, etc. data.
2. Estimated/modelled data — provider estimates ESG characteristics from sector, geography, size, financial and other information.
3. Alternative-data ESG signals — news, controversies, sanctions, litigation, web/media data, etc., used to derive an ESG score.

For a credit, underwriting, procurement, or investment scoring system, I'd generally want a combination of #1 + #2 + #3, rather than relying exclusively on an off-the-shelf ESG rating.

One caveat: Sustainalytics changed its methodology in 2025 to stop accepting non-public information from issuers, so it is not necessarily the best choice if your specific requirement is proprietary/private information supplied directly by the company. Its ESG Risk Ratings are nevertheless available through datafeeds and APIs and its coverage includes private-sector companies.

If you tell me whether you're looking for (a) a raw data feed, (b) an already-calculated ESG score, or (c) data to build your own ESG score, I can narrow this to the 5–10 vendors that actually fit and compare coverage, API/feed format, private-company universe, and approximate pricing model.

2. Dun & Bradstreet — particularly interesting if the requirement is broad private-company universe + ESG attributes, rather than simply buying an existing ESG rating. D&B explicitly says its ESG Insights covers public and private businesses and is available as a data file, as well as through its other data products.

3. S&P Global / Trucost — worth investigating if environmental/climate factors are particularly important. S&P describes its Trucost Private Company Environmental Data as providing insights into private-company sustainability metrics, alongside private-market data collection and reporting tools.

Several major ESG data and scoring providers include private company coverage in their feeds , leveraging private company engagement models, corporate sustainability assessments, or modeled/estimated data approaches.

Because private companies lack mandatory public regulatory filings for sustainability, providers use direct surveys (like corporate sustainability assessments), supply-chain data, and AI-driven media/controversy monitoring to build these feeds.

Leading Providers Offering Private Company ESG Data Feeds

• S&P Global Sustainable1 : Utilizes the Corporate Sustainability Assessment (CSA), which actively engages thousands of private and unlisted companies alongside public equities via customized industry questionnaires to generate S&P Global ESG Scores.
• Morningstar Sustainalytics : Covers over 16,000 companies globally spanning public equity, fixed income, and private sectors through their ESG Risk Ratings, using analyst assessments and AI-assisted news monitoring.
• EcoVadis : Specifically specializes in supply chain and private company sustainability ratings, relying heavily on direct document uploads and assessments filled out by private, small-to-medium enterprises and multinational corporations.
• Moody's : Provides broad private and public market coverage utilizing assessment frameworks and data feeds that evaluate unlisted entities, particularly for private debt and supply-chain evaluations.
• Clarity AI : Employs advanced machine learning and big data modeling to estimate and cover hundreds of thousands of private and public entities where direct disclosure is absent.

If you'd like, let me know:

• The approximate size or region of the private companies you need to cover
• Whether you prefer direct company-reported data or AI-modeled estimates

I can help narrow down which provider fits your technical and budget requirements.

Major financial data and ESG rating agencies such as S&P Global Sustainable1, Morningstar Sustainalytics , and Moody's provide ESG data feeds that stretch into private company data, leveraging private market inputs, direct corporate assessments, and modeled estimations.

Because private companies lack public regulatory filings, providers typically combine direct company engagement (such as sustainability questionnaires), private debt/credit assessments, and AI-driven alternative data modeling to score them.

Leading Providers with Private Company ESG Capabilities

If you can share what specific types of private companies (e.g., small-to-medium enterprises, large private equity-backed firms) or geographic regions you are targeting, I can help narrow down which provider matches your coverage needs.

If you mean commercial ESG scoring data feeds that include private (non-public) companies, the main providers are a mix of ESG rating agencies, alternative data vendors, and private-market data platforms. The strongest options depend on whether you need company-reported ESG metrics, modeled ESG estimates, controversy/risk signals, or portfolio-company data collection workflows.

Common private-company ESG data sources by type

1. Private equity portfolio ESG reporting

Best fits:

• MSCI Private Company Data Connect
• S&P Global private markets ESG solutions
• Novata (private-company ESG data collection workflows, integrated with some private-market platforms)

These typically rely on direct portfolio-company disclosures rather than only public information.

2. ESG risk scores for broad private-company universes

Best fits:

• FactSet Truvalue
• RepRisk
• CSRHub

These often use:

• News and media monitoring
• NGO/government sources
• Regulatory records
• Controversy detection
• Machine-learning-derived ESG signals

FactSet Insight FactSet Insight### 3. Climate and environmental estimates for private companies

Best fits:

• S&P Global Trucost
• MSCI climate datasets

These may include modeled emissions, environmental exposure, and supply-chain estimates where companies do not disclose ESG metrics.

If you are building an ESG scoring engine

A typical institutional stack is:

• Private-company fundamentals: PitchBook, Preqin, S&P Capital IQ, Burgiss/MSCI Private Capital Solutions
• Reported ESG metrics: MSCI, S&P Global, LSEG
• Controversies/news signals: RepRisk, FactSet Truvalue
• Climate estimates: S&P Trucost, MSCI Climate
• Custom scoring layer: internal model using raw ESG datapoints rather than vendor composite scores

The key question is whether you need coverage of millions of private companies (mostly modeled ESG) or high-quality ESG disclosures from a smaller private-equity portfolio (company-reported ESG)—the vendor choice changes substantially.

Finding robust ESG scoring and data feeds that cover private companies is challenging because private firms lack public reporting requirements. However, several major enterprise data providers, credit bureaus, and supply-chain specialists have built dedicated private-company ESG datasets and predictive scoring models.

The primary providers offering private company ESG data feeds include:

• EcoVadis : Specializes heavily in supply chain sustainability assessments. They maintain a massive network of evaluated private small-and-medium enterprises (SMEs) and private suppliers, providing customized scorecards and API/data feeds covering 21 sustainability criteria.
• Dun & Bradstreet (D&B) : Offers supply and ESG intelligence platforms that leverage their vast commercial database of private businesses. D&B provides modeled and questionnaire-enriched ESG scores geared heavily toward private vendor and supplier risk management.
• Morningstar Sustainalytics : Their research universe extends across thousands of private companies (in addition to public equities and fixed income), utilizing specialized private-sector risk indicators, stakeholder governance assessments, and controversy monitoring feeds.
• Moody’s (Moody’s ESG / RMS) : Provides private company assessments and scoring, often integrating small-and-medium enterprise sustainability metrics and carbon/climate risk screening tailored for private equity and commercial banking portfolios.
• S&P Global Sustainable1 : While their flagship Corporate Sustainability Assessment (CSA) centers largely on larger or economically significant enterprises, their broader data toolkits integrate private market coverage and supply-chain indicators designed for enterprise and private-equity workflows.

If you can share what type of private companies you are looking to analyze (e.g., small local vendors, large private equity-backed firms, or global supply chains) and your delivery format (API, bulk data feed, or platform dashboard), I can recommend the most suitable provider.

Yes. If by “data feeds” you mean commercial ESG datasets/API feeds that can score or assess private companies, there are several credible options. The important distinction is that some providers have actual private-company data, while others mainly estimate ESG characteristics from limited public/company information.

Strongest options for private-company ESG data

1. Dun & Bradstreet — probably the most interesting for private-company breadth

D&B is unusual because its ESG dataset is explicitly designed to cover public and private businesses. Its ESG Rankings have been expanded to tens of millions of companies globally; D&B says its data incorporates company-specific information, external sources, and modeled variables.

It also offers D&B ESG Insights as a data file, in addition to API/platform delivery.

Best for: supplier/vendor scoring, private-company due diligence, KYB/KYC, credit-risk integration, and building a broad universe of private companies.

2. MSCI — strongest if you're talking about private equity/private assets

MSCI now has Private Company Data Connect, specifically designed to collect sustainability data directly from private companies and provide portfolio-company sustainability insights. MSCI says it covers roughly 20,000 private companies with climate data.

More interestingly, MSCI's newer Sustainability and Climate On-Demand product can generate an Indicative ESG Score for private or public companies with limited disclosure, using inputs such as sector, location and revenue.

Best for: PE/VC portfolios, private-credit underwriting, institutional investors and situations where you need an ESG assessment despite sparse disclosure.

3. Sustainalytics — established ESG-risk feed

Morningstar Sustainalytics provides ESG Risk Ratings and makes the data available through datafeeds, API and third-party distribution platforms.

However, its core ESG Risk Ratings universe is more concentrated in larger companies, so I would not choose it primarily for comprehensive SMB/private-company coverage without first getting its current private-company universe from sales.

4. ESG Book

ESG Book is particularly interesting if you're building an ESG-data infrastructure rather than simply buying a rating. Its Access product provides standardized ESG/climate data and scores, with delivery through API, Snowflake, AWS, GCP, SFTP or CSV. It also explicitly supports capturing private portfolio data alongside public sustainability disclosures.

Best for: integrating ESG data into your own scoring/modeling system.

5. S&P Global Sustainable1

S&P Global provides ESG Scores and raw ESG data through APIs, feeds, cloud and other delivery mechanisms.

The catch is that its traditional ESG scoring is much more useful for public/large companies than for the long tail of private SMBs.

6. ICE + Dun & Bradstreet

This is worth watching if your definition of ESG includes climate risk. ICE and D&B announced a climate-data offering intended to cover tens of millions of public and private companies, including estimated Scope 1, 2 and 3 emissions and physical-risk data.

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If you're building a private-company ESG scoring product

I'd narrow the shortlist to:

D&B → MSCI → ESG Book → Sustainalytics

And I'd think about them differently:

• Need millions of private companies? → D&B
• Need PE/VC/private-credit quality assessments? → MSCI
• Need raw data + API to build your own score? → ESG Book
• Need a recognized institutional ESG rating methodology? → Sustainalytics
• Need climate/emissions estimates at enormous private-company scale? → D&B/ICE

One important caveat: “private-company ESG score” can mean two very different things. A score based on an actual company questionnaire/disclosure is fundamentally different from a modeled score inferred from industry, geography, size, ownership, sanctions/news, emissions models, etc. For private companies, the latter is extremely common.

If you tell me what you're using the feed for (e.g. private credit underwriting, PE due diligence, supplier scoring, an ESG fintech/API, or investment research), I can give you a more specific shortlist—including coverage, approximate company counts, API/feed availability, scoring methodology, and likely pricing model.

It also offers D&B ESG Insights as a data file, in addition to API/platform delivery.

Best for: supplier/vendor scoring, private-company due diligence, KYB/KYC, credit-risk integration, and building a broad universe of private companies.

2. MSCI — strongest if you're talking about private equity/private assets

MSCI now has Private Company Data Connect, specifically designed to collect sustainability data directly from private companies and provide portfolio-company sustainability insights. MSCI says it covers roughly 20,000 private companies with climate data.

More interestingly, MSCI's newer Sustainability and Climate On-Demand product can generate an Indicative ESG Score for private or public companies with limited disclosure, using inputs such as sector, location and revenue.

Best for: PE/VC portfolios, private-credit underwriting, institutional investors and situations where you need an ESG assessment despite sparse disclosure.

3. Sustainalytics — established ESG-risk feed

Morningstar Sustainalytics provides ESG Risk Ratings and makes the data available through datafeeds, API and third-party distribution platforms.

However, its core ESG Risk Ratings universe is more concentrated in larger companies, so I would not choose it primarily for comprehensive SMB/private-company coverage without first getting its current private-company universe from sales.

4. ESG Book

ESG Book is particularly interesting if you're building an ESG-data infrastructure rather than simply buying a rating. Its Access product provides standardized ESG/climate data and scores, with delivery through API, Snowflake, AWS, GCP, SFTP or CSV. It also explicitly supports capturing private portfolio data alongside public sustainability disclosures.

Best for: integrating ESG data into your own scoring/modeling system.

5. S&P Global Sustainable1

S&P Global provides ESG Scores and raw ESG data through APIs, feeds, cloud and other delivery mechanisms.

The catch is that its traditional ESG scoring is much more useful for public/large companies than for the long tail of private SMBs.

6. ICE + Dun & Bradstreet

This is worth watching if your definition of ESG includes climate risk. ICE and D&B announced a climate-data offering intended to cover tens of millions of public and private companies, including estimated Scope 1, 2 and 3 emissions and physical-risk data.

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If you're building a private-company ESG scoring product

I'd narrow the shortlist to:

D&B → MSCI → ESG Book → Sustainalytics

Obtaining ESG data and scoring feeds that include private companies is one of the trickiest areas in sustainable finance, because private firms lack public disclosure mandates. Providers generally tackle this using two methods: direct supplier/company assessments (asking the private company to fill out questionnaires) or predictive modeling/AI estimation (using sector, size, and geographic proxies).

The primary providers offering ESG data feeds with private company coverage include:

• EcoVadis: Widely considered the market leader for supply chain and private company ESG assessments. Instead of relying only on public filings, EcoVadis uses a customized, evidence-based questionnaire approach tailored to small-and-medium enterprises (SMEs) and private corporations. They provide robust scorecards covering environment, labor/human rights, ethics, and sustainable procurement for over 100,000 trading companies, many of which are private.
• Moody’s (Moody’s ESG / Moody’s Analytics): Moody’s provides extensive private company credit and risk data, and they integrate predictive ESG/climate scores for unrated and private entities. By leveraging broad macroeconomic, sectoral, and geographic data models, they estimate ESG risk profiles where direct disclosures are missing.
• S&P Global Sustainable1: S&P Global possesses massive corporate database coverage (via the Corporate Sustainability Assessment - CSA). While their deep-dive scores traditionally targeted large public caps, they have expanded private market and SME coverage through modeled data and targeted outreach, especially for supply chain and credit risk assessments.
• RepRisk: Rather than scoring a company based on self-disclosures or questionnaires, RepRisk specializes in quantitative ESG risk and controversy data driven by external stakeholder feedback, media, and global NGOs. Because it tracks public and private entities dynamically through external news and public records, it captures severe ESG/controversy risks for thousands of major private companies that otherwise don't report.
• ESGE / ESG Book / Clarity AI: These tech-forward platforms ingest vast alternative data layers and automated footprints. While verified data on smaller private firms remains sparse, these platforms increasingly offer data feeds utilizing machine learning to estimate footprint metrics for unlisted targets.

If you are looking to integrate this data, let me know:

• Are you looking for supply-chain procurement scoring (like EcoVadis) or investment portfolio/credit risk modeling (like Moody's/S&P)?
• Do you need verified primary data or are AI-modeled estimates acceptable for your use case?

Yes. If you mean commercial data feeds that can support ESG scoring of private companies, there are several credible providers, but they differ substantially in whether they provide actual ESG scores versus underlying private-company data that you can score yourself.

Strongest options

1. MSCI

MSCI has a particularly relevant offering called Private Company Data Connect. MSCI says it covers approximately 20,000 private companies with climate data, and allows investors to collect sustainability information directly from private companies, benchmark them, and use metrics such as Implied Temperature Rise.

An especially important development is the MSCI–Moody's partnership: Moody's Orbis private-company data is being used to expand MSCI's private-company ESG coverage.

2. Morningstar Sustainalytics

Morningstar Sustainalytics is one of the clearest choices if you actually want a pre-calculated ESG risk score rather than raw data.

Its ESG Risk Ratings cover more than 16,000 companies across public equity, fixed income, and private sectors, with more than 200 indicators and 1,800 data points. Importantly for your question, Sustainalytics explicitly recognizes private companies as eligible for direct or flow-through ESG assessments.

It also offers the data through datafeeds and APIs, which makes it considerably more useful if you're trying to ingest scores into another system.

3. S&P Global / Trucost

S&P Global is interesting because its private-markets offering specifically includes Trucost Private Company Environmental Data. S&P describes this as providing sustainability metrics for private assets throughout the investment lifecycle.

This is particularly useful if your ESG score has a substantial environmental/carbon component, rather than requiring a traditional E/S/G rating.

S&P also sells ESG raw data with up to 1,000 ESG datapoints per assessed company, although you would want to verify private-company coverage for the exact universe you're interested in.

4. Moody's Orbis

Moody's Orbis is probably the most interesting underlying private-company data source.

Orbis has data on 600M+ entities, with the overwhelming majority being private companies, and combines information from more than 170 providers. It includes ownership, financials, corporate relationships, firmographics and other risk information.

Crucially, Orbis isn't simply a web database: Moody's supports APIs, bulk feeds, cloud delivery and real-time delivery.

Moody's also says its sustainability offering includes millions of ESG scores and sub-scores, including ESG Indicative Scores developed in partnership with MSCI, for private and listed companies.

So if you're building a private-company ESG scoring engine, I'd put Orbis very high on the list because it can provide the company-level data needed to identify and enrich otherwise opaque private businesses.

5. Novata

Novata takes a somewhat different approach. Rather than primarily trying to infer ESG characteristics from public information, it provides infrastructure for collecting ESG data directly from private portfolio companies.

S&P describes Novata as an ESG data-collection workflow solution for private markets, integrated with its iLEVEL portfolio-monitoring software.

This is particularly attractive for private equity/VC funds where you can actually require portfolio companies to submit ESG KPIs.

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If you're building a private-company ESG score

I'd divide the market into three categories:

Ready-made score: Sustainalytics → probably the first one I'd investigate.

Private-company data + your own scoring model: Moody's Orbis → probably the strongest foundation because of its enormous private-company universe and structured company/ownership/financial data.

Directly reported portfolio-company ESG data: MSCI Private Company Data Connect or Novata → better when you want actual company-reported sustainability metrics rather than estimates.

And there's an increasingly interesting MSCI + Moody's combination: Orbis supplies the private-company universe/data while MSCI supplies sustainability/ESG expertise. That partnership was explicitly announced as a way to expand private-company ESG coverage.

If you tell me what you're trying to score (e.g. 10,000 private borrowers for a bank, PE portfolio companies, suppliers, private-credit investments, or prospective vendors), I can narrow this down to the 5–10 best actual data feeds, including coverage, approximate pricing model, API/feed availability, and whether the score is modeled or company-reported.

Yes. There are several providers, but the important distinction is whether you need actual reported ESG data from private companies, modeled ESG scores for private companies, or a feed/API that combines both.

Strongest options for private-company ESG data

MSCI is particularly interesting because its Private Company Data Connect is explicitly designed to collect sustainability information directly from private portfolio companies. MSCI says it has climate data on approximately 20,000 private companies and supports screening, due diligence, portfolio monitoring and reporting.

MSCI also has an Indicative ESG Score designed specifically for companies with limited disclosure. It can generate a 1–10 sustainability-risk score for private or public companies using inputs such as sector, location and revenue size—so this is much closer to a scalable feed for companies that don't publish ESG information.

Particularly interesting if you need an actual data feed

FactSet's Truvalue SASB Scores DataFeed stands out. It currently covers 260,000+ public and private companies worldwide, with daily delivery, and derives scores from external sources including analysts, advocacy groups, regulators and independent media.

FactSet's CSRHub feed is another direct match: it covers 18,000+ public and private companies and supplies company-level ESG scores, with 12 subcategory scores rolling into four categories and an overall score.

S&P Global is also worth looking at if environmental data is important. Its private-markets offering specifically highlights Trucost Private Company Environmental Data, alongside tools for collecting and analyzing portfolio-company sustainability data.

One caveat about Sustainalytics

Sustainalytics offers very mature ESG Risk Ratings and explicitly supports datafeeds and APIs, but its standard ESG Risk Ratings are primarily designed around larger/mid-cap public-market coverage. sustainalytics.com It also changed its methodology in 2025 to stop accepting non-public information from companies, which is particularly relevant if your requirement is private-company-supplied data rather than modeled/public-source data.

If you're building a private-company ESG scoring product

I'd shortlist these four:

1. MSCI — best if you want a combination of private-company data collection + modeled risk scores.
2. FactSet Truvalue — best if you need a very large universe of private companies and an actual machine-readable feed.
3. FactSet CSRHub — interesting if you specifically want a ready-made composite ESG score covering private companies.
4. S&P Global/Trucost — strongest candidate if environmental/climate data is a major component.

There is also a useful industry benchmark to consider: the ESG Data Convergence Initiative (EDCI) has more than 9,000 portfolio companies represented in its private-market benchmark and is explicitly focused on standardized sustainability data for PE, infrastructure and private credit.

If you tell me what you're using the feed for (e.g., bank underwriting, private-credit risk scoring, PE due diligence, supplier scoring, or building your own ESG score), I can narrow this down to the 5–10 vendors that actually license private-company data via API/SFTP/feed, including approximate coverage, pricing model, and whether the score is reported, modeled, or derived from news.

Particularly interesting if you need an actual data feed

FactSet's Truvalue SASB Scores DataFeed stands out. It currently covers 260,000+ public and private companies worldwide, with daily delivery, and derives scores from external sources including analysts, advocacy groups, regulators and independent media.

FactSet's CSRHub feed is another direct match: it covers 18,000+ public and private companies and supplies company-level ESG scores, with 12 subcategory scores rolling into four categories and an overall score.

S&P Global is also worth looking at if environmental data is important. Its private-markets offering specifically highlights Trucost Private Company Environmental Data, alongside tools for collecting and analyzing portfolio-company sustainability data.

One caveat about Sustainalytics

Sustainalytics offers very mature ESG Risk Ratings and explicitly supports datafeeds and APIs, but its standard ESG Risk Ratings are primarily designed around larger/mid-cap public-market coverage. sustainalytics.com It also changed its methodology in 2025 to stop accepting non-public information from companies, which is particularly relevant if your requirement is private-company-supplied data rather than modeled/public-source data.

If you're building a private-company ESG scoring product

I'd shortlist these four:

Several major ESG data providers and risk-intelligence firms offer data feeds that extend coverage to private companies. Because private firms lack public regulatory disclosures, these providers typically leverage alternative data , external stakeholder/media monitoring, direct company assessments, or predictive AI modeling.

Key providers offering private company ESG data and scoring feeds include:

• RepRisk : A leader in RepRisk ESG data science that specializes in an "outside-in" risk view. They evaluate business conduct, reputational, and ESG risk for over 350,000 public and private companies globally (including emerging and frontier markets). Their database is updated daily via AI and human intelligence screening of external public sources and is available via direct data feeds (such as on the AWS Data Exchange).
• EcoVadis : Known primarily for supply chain sustainability ratings, EcoVadis evaluates tens of thousands of trading partners and private companies. They combine direct company questionnaires and document verification with predictive data models to score environmental, labor/social, ethics, and sustainable procurement practices.
• Morningstar Sustainalytics: Sustainalytics includes coverage across public equity, fixed income, and select private sectors based on analyst-driven material ESG risk assessments. Their data is accessible via flexible delivery options including direct data feeds and APIs.
• MSCI ESG Research : While traditionally focused on large public caps, MSCI has built out extensive private asset data and alternative data frameworks to accommodate private capital, private equity, and real asset portfolios.

If you'd like, let me know:

• Are you looking to score supply chain vendors, private equity investments , or general portfolio assets?
• Do you prefer a feed based on news/controversy monitoring or direct company surveys?

I can narrow down which provider's data architecture fits your technical integration needs best.