Report shipment pollutants
Lune provides the most transparent and accurate emissions calculation methodologies available. As part of this commitment, our API response includes a detailed breakdown of pollutant emissions and well-to-wheel emissions, giving your customers reliable data for climate impact reporting.Complete the following setup steps before using this guide:
Generate an API key and authenticate your account.

Set up Client Accounts to track emissions for your individual customers.

Use the multi-leg emission estimate to make a emission estimate calculation request.
Understanding the API response
When you request an emissions calculation, the response includes amass
object like the example below.The amount
property represents the total estimated CO₂e emissions for the shipment.The response also provides a breakdown of well-to-wheel emissions and additional pollutants.
Well to wheel details
Thewtw_details
object categorises the CO₂e emissions into different lifecycle stages:- Well-to-tank (
wtt
): Emissions from fuel extraction, refining, and transportation. - Tank-to-wheel (
ttw
): Emissions from fuel combustion during transportation. unknown
: Emissions that cannot be mapped to either stage.
Pollutants
Thepollutants
object breaks down additional polluting gases, detailing their contributions to well-to-tank and tank-to-wheel emissions. Since these gases, apart from carbon dioxide, cannot be converted to CO₂e, they are not included in the CO₂e estimate. By providing this data, Lune enables you to offer even more granular reporting on the full climate impact of your customers’ shipments.For example, in the object below, 0.000148 tonnes of nitrogen oxides (nox
) are emitted during the well-to-tank phase, with no emissions during the tank-to-wheel phase.
- Nitrogen oxides (
nox
) - Non-methane hydrocarbons (
nmhc
) - Carbon dioxide (
co2
) - Particulate matter (
pm
) - Sulfur dioxide (
so2
)