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SiteCheck Trade & Energy – Freight CO2e Emissions Calculator
x402
SiteCheck Trade & Energy – Freight CO2e Emissions Calculator is a paid API for AI agents from api.tradeenergy-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).
Calculates freight CO2e emissions in kg for a shipment using UK Government DESNZ 2025 greenhouse-gas conversion factors, given cargo weight, distance, and transport mode.
Price / call$0.002
Success—
StatusUnknown
How this service works
Freight CO2e emissions for a shipment: tonnes × distance (km) × the UK Government (DESNZ) 2025 greenhouse-gas conversion factor for the chosen mode — van, HGV, refrigerated HGV, air freight (with or without radiative forcing), rail, tankers or cargo ships by vessel type and size. Returns kg CO2e per matching factor. Uses DESNZ factors (aligned with the GHG Protocol), not the GLEC tool itself.
Output
Returns a JSON object with the shipment's total kg CO2e, the matched vehicle/vessel label and factor ID, kg CO2e per tonne-km, total tonne-km, the source URL of the DESNZ 2025 factor set, and the number of matching factors found.
Example use cases
Scope 3 emissions reporting for ocean freight
“I need to calculate the kg CO2e for shipping 50 tonnes of goods from Shanghai to Rotterdam — that's about 20,000 km by cargo ship. Can you use the UK DESNZ 2025 factors and give me the per tonne-km figure too?”
Comparing air vs sea freight carbon footprint
“What's the difference in CO2e emissions between flying 5 tonnes of cargo 8,000 km by long-haul air freight with radiative forcing versus shipping it the same distance by cargo ship? Use DESNZ 2025 factors.”
GHG reporting for refrigerated HGV delivery
“For our sustainability report, can you estimate the greenhouse gas emissions for a refrigerated HGV delivering 10 tonnes of goods over 500 km using the 2025 UK government conversion factors?”
Technical details
Endpoint
GEThttps://api.tradeenergy-api.workers.dev/api/logistics/co2-freight-emission?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need UK Government DESNZ 2025-aligned CO2e calculations for freight shipments across a wide range of transport modes (van, HGV, refrigerated HGV, air with/without radiative forcing, rail, sea tanker, cargo ship). Prefer it over generic carbon calculators when GHG Protocol alignment and official UK factor provenance are required for Scope 3 reporting or sustainability disclosures. Not a substitute for the GLEC framework tool.
Side effects
- Missing required parameters (mode, tonnes, km) returns a validation error
- Unrecognised mode value returns no matching factor
- Ambiguous 'type' sub-type string may match zero or multiple rows
- Distance or weight values of zero or negative may produce erroneous results
- DESNZ factor set updates may not yet be reflected if crawl is stale
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"km": 18000,
"mode": "Cargo ship",
"count": 1,
"source": "https://www.gov.uk/government/publications/greenhouse-gas-reporting-conversion-factors-2025",
"tonnes": 20,
"results": [
{
"kgCo2e": 5803.2,
"vehicle": "Container ship · Average",
"factorId": "27_320_3235_14_1",
"kgCo2ePerTonneKm": 0.01612
}
],
"tonneKm": 360000,
"factorSet": "UK Government GHG Conversion Factors 2025 (DESNZ), Freighting goods, kg CO2e per tonne.km"
}
}Tags
x402
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