Skip to main content
Methodology

Carbon Accounting Methodology Guide

Published on December 8, 2025

A comprehensive guide to measuring and reporting carbon emissions across Scope 1, 2, and 3 categories for regulatory compliance.

Introduction

Carbon accounting is the foundation of climate risk management. Understanding how to accurately measure, report, and verify emissions is essential for compliance with global standards and regulations.

Scope 1: Direct Emissions

Scope 1 emissions include all direct GHG emissions from sources owned or controlled by your organization, such as combustion in owned boilers, furnaces, and vehicles.

Scope 2: Indirect Energy Emissions

Scope 2 emissions account for GHG emissions from the generation of purchased electricity, steam, heating, and cooling consumed by the reporting organization.

Scope 3: Value Chain Emissions

Scope 3 includes all other indirect emissions that occur in a company's value chain, including both upstream and downstream emissions.

Best Practices

  • Establish clear organizational boundaries
  • Use consistent methodology across reporting periods
  • Document all assumptions and data sources
  • Implement quality assurance procedures
  • Seek third-party verification when required
Floodlight - Climate Risk Intelligence