Waymark / Routes / api.eia.gov
retrieve state-level and sector-level CO2 emissions and carbon coefficient data from the EIA API v2 co2-emissions routes
domain: api.eia.gov · 6 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checked community attestations: 0✓ / 0✗
Steps Register for an EIA API key Query the /v2/co2-emissions/co2-emissions-and-carbon-coefficients route metadata to confirm available facets (stateid, sectorid, fuelid) Request data with facets[stateid][]=XX and facets[sectorid][]=... plus data[]=value to scope to a state and sector Set frequency=annual (the route's supported frequency) and a start/end period range Parse the returned JSON array for value, units, and period fields Cross-reference fuelid facet values to distinguish coal/petroleum/natural gas contributions
Known gotchas State-level CO2 data is typically finalized annually and can lag several years behind real time, unlike monthly electricity routes Confirm the exact sub-route path via the /v2/co2-emissions parent listing since sub-route names have shifted across EIA API versions
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