Transparency for the carbon ledger.
Carbon Compass is an open, live dashboard of declared CO₂ emissions from the world's largest publicly listed firms. We believe climate accountability starts with visibility — and visibility starts with data.
What are declared CO₂ emissions?
“Declared CO₂ emissions” refers to the greenhouse-gas totals that companies voluntarily or mandatorily report in their annual sustainability disclosures, CDP questionnaires, and regulatory filings. We aggregate Scope 1 (direct combustion and process emissions), Scope 2 (purchased electricity, heat, and steam), and Scope 3 (value-chain emissions, chiefly category-15 downstream use of sold products). Because reporting boundaries, measurement methods, and assurance levels vary by firm, these figures represent the best available public declarations rather than a perfectly harmonized inventory.
How the data is collected
Our dataset is assembled from three primary sources: (1) company-issued sustainability and annual reports filed under TCFD, GRI, and ISSB frameworks; (2) CDP (formerly Carbon Disclosure Project) climate-change questionnaires, with responses scored and verified; and (3) jurisdictional registries such as the EU ETS and EPA GHGRP where applicable. We normalize all figures to the latest fiscal year available, convert units to MtCO₂e, and apply consistent scope categorization so users can compare across sectors, geographies, and time.