Grid carbon intensity & electricity price data

Hourly CO₂ intensity for 12 U.S. grid regions, monthly location-based Scope 2 factors, grid fuel mix, retail power prices and Henry Hub gas. JSON API and CSV. Cancel anytime.

Free

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Current carbon intensity, grid mix, prices
100 calls / day
JSON API

Pro

$49 / month

For analysts and apps

Everything in Free
Hourly carbon history (up to 31 days per request)
CSV export
10,000 calls / day

Business

$199 / month

For sustainability reporting

Everything in Pro
Monthly Scope 2 location-based factors (gCO₂/kWh, lb/MWh) with hourly distribution
Up to 366 days of history per request
100,000 calls / day

Regions: ISO New England, New York ISO, PJM Interconnection, Midcontinent ISO, ERCOT (Texas), California ISO, Southwest Power Pool, Southern Company, Tennessee Valley Authority, Bonneville Power Administration, Florida Power & Light, Duke Energy Carolinas.

Data: U.S. Energy Information Administration (public domain). Carbon estimates use EIA emission factors; see methodology. Payments by Stripe.