ESG Book

ESG

ESG Book, headquartered in the United Kingdom and founded in 2018, provides a cloud-based platform that aggregates both public and private sustainability data.

Reviewed by 7wData
Share Email

On this page

Profile

ESG Book provides a cloud-based platform that unifies public and private sustainability data to help financial institutions with reporting, risk management, and transition finance.

ESG Book, headquartered in the United Kingdom and founded in 2018, provides a cloud-based platform that aggregates both public and private sustainability data. The company's core product, ESG Analytics, covers over 76,000 companies across 500+ metrics with more than five years of historical data. It positions itself as a tool for financial institutions to manage sustainability reporting, transition finance, and supply chain decarbonisation.

The company raised a $35 million Series B round in June 2022, led by Energy Impact Partners, with participation from Meridiam and Allianz X. CEO Daniel Klier stated at the time that the funds would be used for hiring, technology development, and US expansion. ESG Book's customer base includes major financial institutions such as HSBC, Citi, and eToro, as well as technology partners like Google Cloud.

The platform claims a data accuracy rate of 98%+ through automated validation checks and real-time input validation. As of early 2026, the company is navigating a rapidly evolving regulatory landscape, with the EU's Omnibus simplification package (Directive 2026/470) reducing some reporting requirements, while US state-level mandates like California's SB 253 push for emissions disclosure. ESG Book's market opportunity is tied to the growing demand for reliable ESG data, with US ESG-focused mutual funds and ETFs reaching $647.87 billion in assets as of April 2026. However, the company faces challenges from regulatory rollbacks, such as the UK's indefinite relief on Scope 3 reporting, and increasing competition from established data providers like S&P Global Sustainable1.

Track ESG Book and 240+ vendors.

48k+ subscribers read the daily AI & data note. One email, both newsletters. Unsubscribe anytime.

Who buys this

  • Banks and financial institutions needing sustainability data for regulatory reporting and risk management
  • Asset managers and insurers integrating ESG criteria into investment decisions and portfolio analysis
  • Corporations managing supply chain decarbonisation and Scope 1, 2, and 3 emissions reporting
  • Financial institutions seeking to grow sustainability-linked lending and track borrower progress

Publicly disclosed clients

  • HSBC
  • Citi
  • eToro
  • Google Cloud

Strengths and what to watch

Strengths

  • Covers 76,000 companies across 500+ metrics with 5+ years of historical data, providing broad market coverage
  • Claims 98%+ data accuracy through automated validation checks and real-time input validation, with linked source documentation
  • Cloud-based platform allows real-time data updates, making sustainability data accessible and comparable for clients

Watch for

  • Regulatory rollbacks, such as the UK's indefinite relief on Scope 3 reporting and EU's Omnibus simplification, could reduce demand for comprehensive sustainability data
  • Intense competition from established players like S&P Global Sustainable1, which offers its own ESG scores and data solutions
  • Dependence on a single $35 million Series B round in 2022 for growth; no disclosed subsequent funding rounds or revenue figures as of mid-2026

Key Information

Industry
ESG
Founded
2018
Headquarters
United Kingdom

Frequently Asked Questions

What is ESG Book and what does it do?

ESG Book is a cloud-based platform that unifies public and private sustainability data for financial institutions. It helps with reporting, risk management, and transition finance by aggregating data on over 76,000 companies across 500+ metrics with more than five years of historical data.

How accurate is ESG Book's data?

ESG Book claims a data accuracy rate of 98% or higher. This is achieved through automated validation checks and real-time input validation, with linked source documentation for transparency. The platform is designed to provide reliable sustainability data for financial institutions.

Who are ESG Book's main clients?

ESG Book's customer base includes major financial institutions such as HSBC, Citi, and eToro. It also partners with technology companies like Google Cloud. The platform serves banks, asset managers, insurers, and corporations needing sustainability data for reporting and risk management.

How is ESG Book funded and what are its growth plans?

ESG Book raised a $35 million Series B round in June 2022, led by Energy Impact Partners with participation from Meridiam and Allianz X. CEO Daniel Klier said the funds would be used for hiring, technology development, and US expansion. No subsequent funding rounds have been disclosed.

What regulatory challenges does ESG Book face?

ESG Book operates in a shifting regulatory landscape. The EU's Omnibus simplification package (Directive 2026/470) reduces some reporting requirements, while the UK has granted indefinite relief on Scope 3 reporting. Meanwhile, US state mandates like California's SB 253 push for emissions disclosure.

How does ESG Book compare to competitors like S&P Global?

ESG Book faces intense competition from established players like S&P Global Sustainable1, which offers its own ESG scores and data solutions. ESG Book differentiates with a cloud-based platform covering 76,000 companies and claiming 98%+ data accuracy, but it has a smaller funding base and no disclosed revenue.

Sources

  1. www.esgbook.com — Company overview, product offerings, client logos (HSBC, Citi, eToro, Google Cloud), data coverage (76,000 companies, 500+ metrics, 5+ years history), and accuracy claims (98%+)
  2. www.reuters.com — Series B funding of $35 million led by Energy Impact Partners, with Meridiam and Allianz X; CEO Daniel Klier's comments on US expansion and hiring
  3. www.fintechfutures.com — Details of Series B funding round and company's market positioning
  4. www.esgbook.com — Regulatory context including EU Omnibus simplification (Directive 2026/470), UK Scope 3 relief, and California SB 253
  5. www.ici.org — Market data on US ESG-focused mutual funds and ETFs reaching $647.87 billion in assets as of April 2026