Carbon Intensity
CO2 emissions per kWh of electricity
What is it?
Carbon Intensity measures how much carbon dioxide (CO2) is emitted to produce one kilowatt-hour of electricity. It varies throughout the day based on the generation mix - lower when renewables are generating, higher when gas plants are running.
This metric is crucial for ESG reporting, carbon accounting, and timing energy consumption to minimize environmental impact.
Key Points
Unit
gCO2/kWh (grams of CO2 per kilowatt-hour)
Update Frequency
Every 30 minutes, with 48-hour forecasts
Source
National Grid ESO Carbon Intensity API
Typical Range
50-400 gCO2/kWh (UK average ~200)
Intensity Levels
Very Low: 0-50 gCO2/kWh
High renewable output (windy, sunny days)
Low: 50-100 gCO2/kWh
Good renewable contribution
Moderate: 100-200 gCO2/kWh
Mix of gas and renewables
High: 200-300 gCO2/kWh
Significant gas generation
Very High: 300+ gCO2/kWh
Low wind/solar, high demand periods
Use Cases
ESG Reporting
Calculate your organization's Scope 2 emissions by multiplying electricity consumption by the carbon intensity for each half-hour. Essential for CDP, TCFD, and annual reports.
Smart Scheduling
Shift flexible loads (EV charging, HVAC, industrial processes) to low-carbon periods. Our forecast API helps you plan 48 hours ahead.
PPA Additionality
Demonstrate the carbon impact of your PPA by comparing grid intensity with your contracted renewable source (near-zero for wind/solar).
API Endpoint
GET /uk/carbon/intensity/currentReturns current carbon intensity with index level and forecast.
{
"data": [{
"from": "2024-12-20T14:00Z",
"to": "2024-12-20T14:30Z",
"intensity": {
"actual": 145,
"forecast": 148,
"index": "moderate"
}
}],
"unit": "gCO2/kWh"
}