GHG Emissions Resource Hub

Sustainability Reporting Toolkit

Official Calculators, Standards and Guidance for Computing Scope 1, 2 and 3 Greenhouse gas Emissions — aligned with GHG Protocol, BRSR and GRI 305.

Sustainability Reporting Toolkit

GHG Emissions
Resource Hub

Official calculators, standards and guidance for computing Scope 1, 2 and 3 greenhouse gas emissions — aligned with GHG Protocol, BRSR and GRI 305.

1

Choose your frameworkStart with a standard — GHG Protocol or ISO 14064 — before computing any numbers.

2

Identify your scopesUse the filter above to narrow to the emission scope most relevant to your operations.

3

Select emission factorsPick the right data source — use CEA India factors for Indian grid electricity (Scope 2).

4

Disclose & verifyMap your output to BRSR / GRI 305 / CDP for regulatory and voluntary reporting.

No resources match your current filters. Try broadening your selection.

Framework

Foundational standards & methodology

Start here before computing any scope emissions

GHG Protocol Corporate Accounting & Reporting Standard The global foundation for all Scope 1, 2 & 3 accounting. Most widely used GHG accounting framework worldwide.

ghgprotocol.org GHG Protocol Scope 3 Standard — Value Chain Full framework covering all 15 upstream and downstream emission categories.

ghgprotocol.org ISO ISO 14064 Series International standard for GHG quantification, monitoring, reporting and verification at organisation and project level.

iso.org SBTi Science Based Targets initiative Set emission reduction targets aligned with 1.5°C pathway. Mandatory Scope 3 coverage for most sectors.

sciencebasedtargets.org

Scope 1

Direct emissions — owned or controlled sources

Fuel combustion, process emissions, fugitive releases from your own operations

GHG Protocol Cross-sector calculation tools Stationary combustion, mobile combustion, and fugitive emission worksheets in Excel format.

ghgprotocol.org US EPA GHG Emission Factors Hub Comprehensive emission factors for fuel combustion, refrigerants, and industrial processes.

Emission factorsFree

epa.gov IEA Emission Factors 2023 Country-level fuel combustion emission factors including India, updated annually.

Emission factorsIndia

iea.org UNFCCC National GHG inventory data Reference emission factors and national inventory reports by country and sector.

Emission factorsFree

unfccc.int IPCC IPCC 2006 Guidelines Default emission factors for stationary and mobile combustion used globally — basis for national inventories.

StandardFactorsFree

ipcc.ch GHG Protocol Industrial process guidance Sector-specific guidance for cement, steel, aluminium and chemical process emissions.

ghgprotocol.org

Scope 2

Indirect emissions — purchased electricity, heat & cooling

Location-based and market-based methods per GHG Protocol Scope 2 Guidance

GHG Protocol Scope 2 Guidance Location-based vs market-based methods, renewable energy certificates (RECs), PPAs and residual mix factors.

ghgprotocol.org CEA India CO2 Baseline Database — India Official Indian grid emission factors by regional and national grid. Mandatory source for India location-based Scope 2.

Emission factorsIndiaFree

cea.nic.in IEA World energy statistics Grid emission factors for 140+ countries — use for multi-country operations or where national data is unavailable.

Emission factors

iea.org RE100 / CDP Residual mix emission factors Market-based Scope 2 factors for companies purchasing renewable electricity certificates in European and Asian markets.

Market-basedFree

re100.group MNRE India Renewable energy — India Ministry of New & Renewable Energy — REC framework, solar and wind capacity data for market-based accounting.

Scope 3

Value chain emissions — all 15 upstream & downstream categories

Typically the largest portion of a company's total footprint

GHG Protocol Scope 3 Evaluator tool Screen all 15 categories to identify material emission sources — ideal starting point for any Scope 3 assessment.

ghgprotocol.org GHG Protocol Category-specific technical guidance Detailed calculation methods for each of the 15 Scope 3 categories — spend-based, activity-based and hybrid approaches.

ghgprotocol.org Climatiq Emission factor explorer Open database of emission factors covering freight, materials, food, business travel and waste — API available.

Emission factorsAPIFree tier

climatiq.io Carbon Footprint Ltd Business carbon calculator Travel, supply chain, waste and employee commuting modules aligned with GHG Protocol Scope 3 categories.

CalculatorFree tier

carbonfootprint.com Ecochain Scope 3 emission factor library Spend-based and activity-based factors for upstream categories — particularly useful for purchased goods & services (Cat 1).

Emission factors

ecochain.com myclimate Corporate footprint calculator Covers business travel, logistics and product lifecycle — suitable for SMEs and early-stage Scope 3 assessments.

myclimate.org Smart Freight Centre GLEC Framework Global logistics emissions council framework — standard methodology for Category 4 (upstream transport) and Category 9 (downstream).

StandardToolFree

smartfreightcentre.org PCAF Financed emissions standard GHG accounting for banks, insurers and asset managers — covers Category 15 (investments) under Scope 3.

India

Indian regulatory & compliance framework

SEBI BRSR, NGRBC, BEE and sector-specific Indian standards

SEBI BRSR Framework Mandatory Business Responsibility & Sustainability Reporting for top 1,000 listed companies — includes GHG disclosure norms.

IndiaMandatoryFree

sebi.gov.in MCA India NGRBC — National guidelines on ESG National Guidelines for Responsible Business Conduct — the underlying policy framework for BRSR disclosures.

IndiaRegulatoryFree

mca.gov.in GRI GRI 305 — Emissions standard Disclosure standard for Scope 1, 2 and 3. Cross-referenced in SEBI BRSR for large listed entities.

globalreporting.org CDP CDP reporting guidance Widely used voluntary disclosure standard — maps to GHG Protocol; many Indian multinationals report via CDP.

cdp.net BEE India PAT scheme — energy intensity Bureau of Energy Efficiency — Perform, Achieve & Trade scheme relevant to energy-intensive industries for Scope 1 & 2 baseline.

IndiaRegulatory

beeindia.gov.in IFCI / CCIL Carbon credit registry — India Indian carbon market registry under development — relevant for companies pursuing domestic carbon offsets under Scope 3 or net-zero strategies.