WHAT'S INSIDE

Four ways to learn.

01

Concepts

Plain-language explanations of the terms that matter — starting with ESG.

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02

Explainers

In-depth pieces that walk a topic end to end — starting with greenwashing.

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03

Frameworks & Standards

Global, regional, Indian, and ISO — what each is for, with a downloadable guide.

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04

Dictionary

An A–Z reference of sustainability terms, being built out.

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Concept Space

Short, structured explanations of the terms that come up most in our research and advisory work.

MORE TERMS
Corporate Sustainability GHGScope 1Scope 2Scope 3 Carbon FootprintCarbon CreditCarbon Offset Carbon MarketNet ZeroClimate Risk Extreme EventsBRSRESG Rating MaterialityCBAMGreen Finance Circular EconomyEPRGreenwashing

Explainers

Longer, more detailed educational pieces that walk through a concept end to end.

More Explainers

More explainers are on the way

We're building out this library one properly-researched piece at a time — no filler, just explainers worth reading.

Frameworks & Standards

What each framework and standard is for — split into global, regional, and Indian frameworks, plus ISO standards with their latest versions. Last verified: October 2026.

Download the full guide (PDF)

All frameworks and standards below with sources, in a 3-page reference you can share with your team.

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Global frameworks

Global Reporting Initiative

GRI Standards

The most widely used voluntary framework for reporting an organisation's economic, environmental, and social impacts.

IFRS Foundation

ISSB — IFRS S1 & S2

A global baseline for sustainability disclosure. S1 covers general sustainability-related financial information; S2 covers climate. Effective from 1 January 2024.

Task Force on Climate-related Financial Disclosures

TCFD

A four-pillar structure for climate-risk disclosure: governance, strategy, risk management, metrics & targets. Disbanded in 2023; now monitored through the ISSB.

Sustainability Accounting Standards Board

SASB Standards

77 industry-specific standards on the sustainability topics most likely to be financially material. Now maintained under the ISSB.

Taskforce on Nature-related Financial Disclosures

TNFD

Recommendations for disclosing nature- and biodiversity-related risks and dependencies. Final version published September 2023.

Formerly the Carbon Disclosure Project

CDP

A global environmental disclosure system covering climate, water, and forests through an annual questionnaire and score.

Science Based Targets initiative

SBTi

Independent validation of corporate emission-reduction targets against climate science.

Regional frameworks

European Union

ESRS

The European Sustainability Reporting Standards underpinning the EU's CSRD. Mandatory for in-scope companies operating in, or reporting into, the EU.

Indian frameworks

SEBI · Business Responsibility & Sustainability Reporting

BRSR

Mandatory ESG disclosure format built on the nine principles of the National Guidelines on Responsible Business Conduct. Applies to the top 1,000 listed companies by market capitalisation from FY 2022-23.

SEBI

BRSR Core

A focused set of BRSR KPIs requiring independent assurance, phased in from the top 150 listed companies (FY 2023-24) to the top 1,000 (FY 2026-27).

ISO standards

StandardPurposeLatest versionCertifiable
ISO 14001Environmental management systems — requirements with guidance for use2026 (published April 2026; replaces the 2015 edition)Yes
ISO 50001Energy management systems — requirements with guidance for use2018Yes
ISO 14064-1GHG quantification and reporting at organisation level2018Used with independent verification (Part 3)
ISO 14064-2GHG quantification at project level2019Used with independent verification
ISO 14064-3Verification and validation of GHG assertions2019—
ISO 14040 / 14044Life cycle assessment — principles, framework, and requirements2006 (amended 2017 & 2020)No — methodology guidance
ISO 14067Product carbon footprint — quantification and communication2018No — guidance only
ISO 26000Guidance on social responsibility2010No — not for certification
ISO 20400Sustainable procurement — guidance2017No — guidance only
ISO 45001Occupational health and safety management systems2018, Amendment 1:2024 (climate action)Yes

Sources: KPMG Survey of Sustainability Reporting 2024; IFRS Foundation; SEBI circulars (July 2023, December 2024); ISO.org. ISO 14001 was revised in April 2026; ISO 45001 is under revision (expected around 2027). Always reconfirm versions with the issuing body before relying on them for compliance.

Sustainability Dictionary

A searchable A–Z reference of sustainability, ESG, climate, and carbon-market terms.

Coming Soon

The dictionary is being built out

A properly researched A–Z reference takes time to do right — check back soon.

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