EM

emission-factors.com API

US ZIP-code emission factors, grid carbon intensity and fuel CO₂e: calculate and compare Scope 1 and 2 emissions

Data licenses vary by source: US government works (public domain); eGRID2024, GHG Hub 2026, OpenEI URDB and ZIP-to-utility data, and GeoNames are CC-BY-4.0; the Green-e residual mix is published by the Center for Resource Solutions. See /methodology.18 operations2 schemas1 revision

Changes

Full history

Source

View schema
Spec
OpenAPI 3.0.3
Document
emission-factors.com · JSON, 19 KB
Retrieved
Oct 19, 2026, 18:52 UTC
Digest
6a306ef2044a

For agents

Every page here has a markdown twin. The overview is one fetch; the llms.txt lists every operation with a link to its own markdown.

curl https://skmtc.dev/emission-factors/apis/emission-factors-com-api.md
curl https://skmtc.dev/emission-factors/apis/emission-factors-com-api/llms.txt