For private company ESG data, several companies provide specialized feeds. Leaders include RepRisk and Veridion, which use AI to track and score private firm risks and sustainability profiles broadly. For more structured institutional reporting, LSEG and Moody's Analytics offer private company data alongside public coverage. For private equity-specific workflows, platforms like Novata and EcoVadis provide tools designed for collecting and benchmarking ESG metrics from private assets and suppliers.
Best for AI-driven risk and controversy monitoring across large sets of private companies. It scans news and stakeholder reports daily to identify risks, serving as a dynamic, signal-rich data feed for risk teams.
Yes. If you mean ESG data feeds that can score or provide underlying ESG data for private/unlisted companies, there are several credible providers. The important distinction is whether you need actual company-reported data, modeled/estimated ESG data, or outside-in controversy/risk data.
Provider
Private-company coverage
What you get
Feed/API
MSCI
~20,000 private companies for climate data; also modeled coverage
Outside-in ESG/business-conduct risk, controversies, media signals, RepRisk Index
Yes
Morningstar Sustainalytics
16,000+ companies across public/private sectors
ESG Risk Ratings, underlying indicators and controversy data
Datafeeds/API
Clarity AI
Up to millions of listed/private companies depending on product
ESG metrics, estimates, risk scores, benchmarks
Raw-data/API-oriented
Moody's
Hundreds of millions of private/public entities in its broader company database
Supplier risk, predicted sustainability scores, ownership/entity data
API/data products
Apex / private-markets ESG solutions
Portfolio-company focused
Company-disclosed ESG data and ratings, with RepRisk integration
Platform/data integration
The most relevant ones
MSCI is particularly interesting if you're building an institutional/private-markets ESG dataset. Its Private Company Data Connect collects sustainability information directly from private portfolio companies, and MSCI says it has climate data on roughly 20,000 private companies. It also has an "Indicative ESG Score" designed specifically for companies with limited disclosure, using characteristics such as sector, location and revenue size.
RepRisk is probably the most interesting if you need private-company risk signals without relying on the company voluntarily reporting ESG information. Its approach is "outside-in": it analyzes public information for ESG and business-conduct risks. RepRisk explicitly says its coverage includes private companies regardless of size, sector or geography, and its data is available through financial-data platforms and feeds.
Morningstar Sustainalytics has a research universe exceeding 16,000 companies across public and private sectors and offers its ESG Risk Ratings through datafeeds, APIs and third-party distribution.
Clarity AI is worth looking at if you want raw ESG variables rather than just somebody else's final score. Its raw-data product provides hundreds of quantitative and qualitative indicators, and it combines reported data with estimates. Clarity AI also says its broader sustainability platform covers listed and private companies.
Moody's is particularly interesting for private-company/supplier risk. Its current supplier-risk offering reports 600M+ global companies/entities, 480M suppliers with Supplier Performance Risk scores and 91M predicted sustainability scores. That's much broader than a conventional ESG-rating universe, although you should distinguish its predicted sustainability score from a traditional ESG rating.
If you're building an ESG scoring model
I'd separate the vendors into three buckets:
Company-reported private data: MSCI Private Company Data Connect, private-markets/Apex-style collection.
Modeled ESG data for companies with little/no disclosure: MSCI, Clarity AI, Moody's.
That distinction matters because a private-company ESG score built from reported disclosures can look very different from one built from modeled estimates or negative-event detection.
If you tell me what you're building (e.g. an ESG scoring SaaS, PE due-diligence platform, bank lending model, or data product), I can narrow this to the 5–10 providers that actually offer licensable raw data/API feeds for private companies, including approximate coverage, pricing model, and whether redistribution is permitted.
EcoVadis – Focused explicitly on supply chain and procurement sustainability ratings, EcoVadis primarily evaluates private, mid-sized, and multinational enterprise suppliers. They offer enterprise-grade data feeds and an to integrate detailed scorecards (covering environment, labor & human rights, ethics, and sustainable procurement) directly into internal vendor management or portfolio systems.[](]()](]()]()
If you'd like to narrow this down, let me know:
Are you looking for coverage of private equity/debt portfolios or supply chain/vendor assessment?
Do you prefer controversy-based risk data (like RepRisk) or questionnaire/performance-based scoring (like EcoVadis)?
I can help recommend the most practical integration path for your use case.
Because private companies rarely self-disclose structured ESG data voluntarily, providers generally use two tactics: external media/incident screening (unverified data) or algorithmic/peer-modeled data estimation.
The primary providers offering ESG scoring and risk data feeds that explicitly include private companies feature distinct capabilities:
How they do it: Rather than relying on company self-disclosure, RepRisk uses a quantitative and qualitative AI/machine learning engine combined with human analysts to screen public media, stakeholder feedback, and regulatory channels worldwide.
Private Company Coverage: Tracks an expansive database covering over 170,000 public and private entities, focusing heavily on operational conduct, environmental incidents, and governance risk.
How they do it: Leverages the massive proprietary Orbis database (mapping hundreds of millions of public and private entities globally) and combines it with predictive algorithms.
Private Company Coverage: Provides modeled ESG scores and carbon/emissions estimations for small-to-medium enterprises (SMEs) and private companies by benchmarking them against peer companies matching size, sector, and location.
How they do it: Expands its Corporate Sustainability Assessment (CSA) framework and alternative data models to private market portfolios, often via integration with platforms like S&P Global Market Intelligence / Capital IQ Pro.
Private Company Coverage: Delivers customized private market assessments and modeled carbon/ESG metrics particularly aimed at private equity and private debt portfolios.
EcoVadis
How they do it: Focuses on customized, requested assessments and document-backed evaluations. While they traditionally rate private suppliers directly via a questionnaire/evidence-upload workflow, it is heavily relied upon for supply-chain private company visibility.
Private Company Coverage: Specializes almost entirely in private mid-market and enterprise supply chains, though getting a data feed requires onboarding suppliers onto their evaluation platform.
If you are looking to integrate this data, let me know:
Are you targeting venture capital/private equity portfolio tracking, supply chain risk management , or commercial lending/underwriting?
Do you prefer modeled estimates (algorithmic proxy scores) or incident-based risk tracking (news and controversy monitoring)?
I can help you narrow down which provider fits your exact technical infrastructure and budget.
Yes. There are several providers, but they differ substantially in whether they actually collect data from private companies, estimate it, or primarily assess external ESG risk signals.
Providers worth looking at
Provider
Private-company coverage
What you get
Best fit
MSCI
Strong and expanding
Private-company sustainability data, indicative ESG scores, climate/emissions estimates, company-reported data
Institutional investors, banks, PE/VC
S&P Global / Trucost
Yes
Private-company environmental data, climate metrics and broader sustainability data
Very broad company universe through Orbis + ESG capabilities
Firmographic/private-company data combined with ESG and credit information
Credit + ESG underwriting
Morningstar Sustainalytics
Some private-market/unicorn coverage
ESG risk and controversy assessments
Investment/portfolio risk
Novata
Specifically designed for private markets
Collects ESG data directly from portfolio companies; benchmarking/reporting
PE/VC portfolio-company data collection
Greenscope
Private-market focused
Direct ESG data collection, scoring, benchmarking and analytics
European/private-market portfolios
EDCI
Private-equity/private-credit portfolio companies
Standardized private-market ESG metrics and benchmarks
Benchmarking and portfolio reporting
A particularly interesting distinction is MSCI vs. RepRisk vs. Novata:
MSCI can provide actual private-company sustainability data and modeled/indicative scores. Its Private Company Data Connect says it covers roughly 20,000 private companies with climate data, while its newer on-demand modules can generate an indicative ESG score for companies with limited disclosure.
RepRisk is more of an outside-in dataset: it looks at what external sources say about companies rather than relying primarily on company disclosures. RepRisk has explicitly described its dataset as covering hundreds of thousands of private companies.
Novata is more of a bottom-up data collection infrastructure: portfolio companies provide the underlying ESG information, which can then be analyzed and benchmarked. S&P Global integrates Novata with its platform for private-market sustainability workflows.
If you're building an ESG scoring product
I'd separate the market into three data layers:
Company master/firmographic data — Moody's Orbis, PitchBook, Capital IQ, etc.
Direct ESG disclosures — Novata, MSCI Private Company Data Connect, EDCI, company questionnaires.
That combination can be much more powerful than buying a single "ESG score." For private companies, the underlying data is often sparse, so a vendor's coverage methodology and use of estimates/proxies matter enormously.
If you're evaluating this for a data feed/API, rather than an end-user ESG platform, I can also narrow this down to the providers that offer bulk/API access, private-company identifiers, raw ESG datapoints, and commercial redistribution rights.
Yes. There are several providers, but they differ substantially in whether they actually have private-company ESG data, versus merely estimating ESG characteristics for private firms.
ESG/SASB scores derived from company information, media, regulators, advocacy sources
DataFeed
Moody's / Orbis + ESG
Very broad private-company universe
Private-company firmographics/ownership plus sustainability and risk data; Moody's and MSCI have specifically partnered to extend private-company ESG coverage
If your requirement is "give me an ESG score/data feed for millions of private companies", I'd investigate S&P Global Trucost Private Companies first. Its coverage is explicitly 4.5M+ private companies, with more than 100 environmental KPIs, and S&P says the data can be delivered through API/cloud/feed channels. Much of this is modeled environmental data rather than company-reported ESG disclosure.
If you need a broader E + S + G signal based on external controversy/media information, FactSet Truvalue is particularly relevant: its SASB Scores DataFeed covers 260K+ public and private companies and incorporates both company-provided information and outside sources such as analysts, advocacy groups and regulators.
For private-equity/private-credit portfolios, Preqin is more specialized. Its sustainability product reports ESG data at the private-asset/company level and currently advertises coverage of 379K+ assets.
And if you're looking for private-company identity/financial/ownership data to combine with ESG, Moody's Orbis is important: Moody's says its Orbis database contains information on more than 500 million entities, and its partnership with MSCI specifically involves extending MSCI's private-company ESG coverage.
If you're building an ESG scoring product
A useful architecture is often:
Private-company master data → ESG raw data → controversy/news → modeled environmental estimates → your scoring methodology
rather than buying a single "ESG score."
For example, S&P Trucost + Moody's Orbis + FactSet Truvalue can cover quite different dimensions: private-company identity/relationships, quantitative environmental exposure, and outside-in ESG signals. S&P also has Novata, which is designed specifically to collect sustainability data from private portfolio companies and integrate it with iLEVEL.
If you tell me what you're trying to score (e.g. 10M+ private businesses for commercial lending, PE portfolio companies, supplier ESG risk, or an ESG scoring API for your own SaaS), I can narrow this to the 5–10 most relevant data feeds and compare coverage, fields, methodology, and licensing/API availability.
Finding ESG data that includes private companies is one of the fastest-growing areas in sustainable finance, driven by private equity and supply chain due diligence needs. While traditional ESG data feeds have historically focused on large-cap public equities, several major players and specialized vendors now incorporate private company data into their scoring and feeds.[](https://ecovadis.com/blog/esg-private-equity-guide/)
Major providers offering private company ESG data or integration capabilities include:
Factiva (by Dow Jones) – While not a traditional ESG rating agency, Factiva provides deep news and media monitoring feeds with profiles spanning millions of private companies, frequently utilized by quantitative and qualitative researchers to build alternative ESG controversy feeds.
Are you looking for private company ESG data for supply chain/procurement vetting, private equity portfolio monitoring , or private credit risk analysis ? I can give you more details on which provider matches that use case best.
: expanded its private company ESG footprint significantly through a strategic data partnership with . By plugging into Moody’s massive database (which tracks firmographic and financial data on over 500 million global entities), delivers private company ESG coverage and private asset insights on the . [](]()]()
If you'd like to narrow this down, let me know:
Are you looking for ESG data on private suppliers for supply chain compliance , or for private equity/private credit investment?
Do you need direct API/enterprise data feeds or a software interface?
Yes. If you mean commercial ESG data feeds that can score or provide ESG/sustainability data on privately held companies, there are several meaningful providers. The market splits into two categories: modeled/externally sourced scores on private companies and first-party ESG data collected directly from private portfolio companies.
Strongest candidates
Provider
Private-company coverage
What you get
Feed/API?
Best fit
FactSet / Truvalue Labs
260,000+ public & private companies
AI/NLP-derived ESG controversy/materiality signals and SASB scores
A particularly interesting option if your requirement is an actual machine-readable feed containing private-company ESG scores is FactSet Truvalue. FactSet says its Truvalue SASB Scores DataFeed covers 260,000+ public and private companies worldwide, is delivered daily, and has history back to 2007.
MSCI Private Company Data Connect is another strong option. MSCI says it has climate data compiled for approximately 20,000 private companies, with data reported directly from private companies as well as analytics such as Implied Temperature Rise.
For a more conventional ESG risk rating, Morningstar Sustainalytics is worth looking at. Its ESG Risk Ratings are available through datafeeds, APIs and third-party distribution, and its research universe includes private-sector companies. sustainalytics.com One caveat: since July 2025, Sustainalytics says it no longer accepts non-public issuer information for its ESG Risk Ratings, so its private-company scores aren't equivalent to a portfolio-company self-reporting platform.
If you specifically need private-company data, not just scores
I'd distinguish these three use cases:
"Give me an ESG score for any private company I identify." → FactSet/Truvalue, Sustainalytics, MSCI
"Give me underlying ESG metrics for private companies." → MSCI Private Company Data Connect, S&P/Trucost
"Collect ESG information directly from my PE/VC portfolio companies and calculate scores." → Novata, Greenscope, EDCI ecosystem
S&P Global explicitly markets Trucost Private Company Environmental Data for the private market and combines it with Novata/iLEVEL for portfolio-company data collection and reporting.
One other interesting source is the EDCI (ESG Data Convergence Initiative). It has more than 9,000 portfolio companies represented in its benchmark and provides standardized private-market sustainability metrics; its ecosystem includes API connections to data platforms.
If you're building an ESG scoring/data product, rather than simply buying ESG research for investment purposes, I would shortlist FactSet/Truvalue, MSCI, S&P/Trucost, and EDCI/Novata first. They have quite different licensing and data-ownership models, which becomes important if you intend to redistribute the scores.
If you tell me what you need the feed for (e.g. lending/credit underwriting, PE due diligence, supplier risk, an ESG SaaS product, or investment screening), I can narrow this to the 5–7 vendors that actually fit and compare coverage, API/feed availability, private-company coverage, pricing model, and whether you can redistribute the 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:
Provider
Private-company coverage
What you get
Feed/API
MSCI
Strong
ESG/sustainability data for private companies, including modeled/on-demand scores and company-provided data
API / platform / bulk integration
Morningstar Sustainalytics
Some
ESG Risk Ratings covering private-sector companies; research and underlying ESG data
Datafeed + API
S&P Global / Trucost
Strong for environmental data
Private-company environmental/climate data, plus private-markets sustainability solutions
API / cloud / feeds
Dun & Bradstreet
Very strong company universe
ESG insights for public and private businesses, combined with extensive company/master data
Data files / Direct+ / APIs
ESG Analytics
Private-company oriented
AI/NLP-derived ESG scores from news and other external sources; specifically designed to cover private companies
Enterprise data access
EDCI
Private markets focused
Standardized portfolio-company ESG metrics and benchmarks rather than a conventional commercial ESG rating
APIs / benchmark data
Greenscope
Private markets focused
ESG collection, scoring, benchmarking and portfolio-company data
API / integrations
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”:
Reported private-company data — the company actually supplies emissions, employee, governance, etc. data.
Estimated/modelled data — provider estimates ESG characteristics from sector, geography, size, financial and other information.
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.
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.
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.
Provider
Primary Private Coverage Mechanism
Delivery Format
S&P Global Sustainable1
Direct Corporate Sustainability Assessments (CSA) & modeling
Datafeeds, API, Platform
Morningstar Sustainalytics
Analyst research & risk frameworks
Datafeeds, API, Global Access
EcoVadis
Direct private enterprise assessment questionnaires
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.
S&P Global Sustainable1 – Provides private company assessments through modeled data and their Corporate Sustainability Assessment (CSA) framework. S&P extends ESG scoring to non-listed and private companies by leveraging deep industry modeling approaches, alternative data, and public footprint analysis, which can be delivered via customized enterprise data feeds.[](https://www.spglobal.com/sustainable1/en/scores/results?cid=108462)
Moody's ESG (Moody's Analytics) – Offers broad private company assessment capabilities, particularly for assessing supply chain risk, small-to-medium enterprises (SMEs), and private debt markets, marrying financial risk data with targeted sustainability signals.
CDP – While traditionally known for corporate climate disclosures, CDP acts as a primary data collection vehicle where thousands of private companies and suppliers voluntarily disclose environmental data (climate, water, forests) to meet capital markets or supply chain demands, providing granular data packages.
iLEVEL
Moody's + MSCI is particularly interesting if you're trying to combine private-company identity/financial data with ESG. Their 2024 partnership gives MSCI access to Moody's Orbis database, which contains information on more than 500 million entities, specifically to expand private-company ESG coverage.
EDCI isn't really a conventional commercial ESG-rating vendor; it's an industry initiative producing standardized, comparable sustainability metrics for private equity, infrastructure and private credit. It reports data from more than 9,000 portfolio companies in its benchmark.
RepRisk : An AI- and machine learning-driven ESG data provider that focuses primarily on environmental, social, and governance risk and controversies. Because RepRisk scans global media, stakeholder, and regulatory sources rather than relying purely on voluntary corporate self-reporting, its database tracks risk exposure and controversies for millions of public and private companies globally. [](https://onestopesg.com/esg-resources/top-esg-data-providers)
PitchBook (a Morningstar company) : While PitchBook is famous for private market financial, venture capital, and private equity data, Morningstar integrates its Sustainalytics ESG framework and private market intelligence to help investors map sustainability factors across private segments, growing capabilities in private equity and venture portfolios.
