Greenhouse Gas Protocol provides the world's most widely used greenhouse gas accounting standards for companies.
GHG Protocol standards and guidance enables companies to measure, manage and report greenhouse gas emissions from their operations and value chains.
In 2016, at least 92% of Fortune 500 companies responding to CDP used GHG Protocol directly or indirectly through a program based on GHG Protocol.
Related standards
Corporate Standard
The GHG Protocol Corporate Accounting and Reporting Standard provides requirements and guidance for companies and other organizations, such as NGOs, government agencies, and universities, that are preparing a corporate-level GHG emissions inventory.
Corporate Value Chain (Scope 3) Standard
The Corporate Value Chain (Scope 3) Standard allows companies to assess their entire value chain emissions impact and identify where to focus reduction activities.
Product Standard
The Product Standard can be used to understand the full life cycle emissions of a product and focus efforts on the greatest GHG reduction opportunities. This is the first step towards more sustainable products.
Project Protocol
The GHG Protocol for Project Accounting is the most comprehensive, policy-neutral accounting tool for quantifying the greenhouse gas benefits of climate change mitigation projects.
Related guidance
Scope 2 Guidance
The Scope 2 Guidance standardizes how corporations measure emissions from purchased or acquired electricity, steam, heat, and cooling (called “scope 2 emissions”).
Scope 3 Calculation Guidance
Building on the Scope 3 Standard, this companion guide makes it easier than ever for businesses to complete their scope 3 inventories.
Agriculture Guidance
The GHG Protocol Agricultural Guidance, a supplement to the Corporate Standard, is the first ever global guidance to measure GHG emissions for the agriculture sector. It covers all agricultural subsectors, including livestock, crop production, and land use change.
Estimating and Reporting Avoided Emissions
This paper provides a neutral framework for estimating and disclosing both positive and negative impacts of products and recommendations for companies to improve the credibility and consistency of claims they make about the comparative greenhouse gas impacts of their products.
Portfolio Carbon Initiative
Portfolio Carbon Intiative, a partnership with 2 Degrees Investing Intiative, World Resources Institute and UNEP Finance Initiative, provides guidance for asset owners and banks to properly assess the climate impact from investing and lending activities.
Potential Emissions from Fossil Fuel Reserves
The first-ever global guidance for measuring and reporting the potential greenhouse gas (GHG) emissions from the fossil fuel reserves held by oil, coal and gas companies.
Calculation Tools
Our tools enable companies to develop comprehensive and reliable inventories of their GHG emissions.
Science Based Targets initiative
Companies that want more guidance on setting ambitious GHG reduction targets in line with current climate science should consider setting science-based emissions reduction targets.