Find the fuel sources a corporate inventory can miss

Start with an equipment and activity list, then connect every relevant fuel-consuming source to its supply records. Compare that list with fuel purchases, stores issues, vehicle records and the approved inventory boundary. This helps identify a forklift, backup generator or leased item that a ledger-only request can overlook.

This guide is for facilities, fleet, operations and reporting teams preparing fuel activity data. It identifies evidence to collect; it does not supply emission factors, decide complex ownership or lease treatment, or instruct anyone to inspect or modify fuel systems.

Separate stationary sources from mobile sources

Stationary combustion includes equipment such as boilers, furnaces and generators. Mobile combustion includes relevant vehicles and mobile equipment. The source must be considered within the approved organisational boundary before its treatment is finalised. Source: US EPA guidance on identifying emissions sources. The guidance is an accounting reference, not an assertion that US regulations apply to an Indian business.

Ask the people responsible for the equipment to identify the sources from existing records and their operational knowledge. A reporting coordinator should not open fuel systems, operate equipment or enter restricted areas to gather inventory data.

Build a source-to-supply map

For each candidate source, record:

• Entity, site and equipment or vehicle identifier

• Source type and purpose

• Fuel type, including any blend information available

• Ownership, operation and boundary-decision reference

• Supply route: dedicated meter, bulk tank, cylinder, fuel card or another route

• Consumption evidence, source unit and coverage dates

• Any allocation, estimate, shared supply or unresolved question

• Record owner, reviewer and status

Keep inactive, newly commissioned and retired sources identifiable. “No use recorded” and “confirmed no use during the period” are different conclusions. Ask for evidence before entering zero.

Match supply records to consumption

A bulk delivery can feed several sources. Fuel-card records may duplicate amounts already included in a fleet schedule. The accounting question is which fuel was consumed by which relevant sources during the period, not how many documents were received.

EPA's stationary-combustion guidance, section 3.1 and mobile-combustion guidance, section 4.1 discuss fuel records, stock changes and avoiding overlap between stationary and mobile uses. Check applicable methods for any losses or non-combustion uses separately; do not force every unexplained movement into fuel burned.

A hypothetical completeness check

Fictional example, not a Nitium client case. An engineering business begins with a gas bill, a diesel delivery account and a vehicle fuel-card export. Its equipment review identifies:

• Boiler B1: supplied by a dedicated gas meter. The facilities owner links the meter account and consumption periods.

• Generator G1: supplied from the bulk diesel tank. Stores links delivery, stock and issue records.

• Van V1: uses a fuel card and occasionally refuels from the same tank. Fleet and stores identify both routes so the tank issues are not added twice.

• Forklift F1: uses LPG cylinders bought through a different supplier account. It was absent from the original fuel request and is added to the collection list.

• Contracted carrier C1: supplies a transport service. Its invoice is recorded for the appropriate boundary and value-chain review, rather than automatically treating all carrier fuel as the business's own fleet fuel.

• Leased pump P1: operating responsibility is unresolved. The entry stays visible with a named decision owner.

For this illustration, the owned boiler, generator, van and forklift have already been confirmed within the chosen boundary. The result is four confirmed source records and two separate treatment questions. It is not a completed emissions inventory: quantities, methods and any other relevant sources still need review.

Use disagreements as completeness checks

If procurement has a fuel supplier with no linked equipment, investigate the purpose. If equipment has no fuel record, ask whether it was inactive, supplied by another account or omitted. If one tank supplies several uses, retain the total supply/stock reconciliation alongside the allocation to sources.

Distance and operating-hour records can help investigate anomalies, but they are not interchangeable with fuel quantities. Preserve the original records and document any estimation method separately.

Before sending the activity-data request

• Equipment, fleet and supplier records have been compared

• Each confirmed source has a supply and evidence owner

• Shared supplies and duplicate data paths are identified

• Lease and outsourced-activity questions are visible

• Fuel types and original units are retained

• Missing records are distinguished from confirmed zero use

• Other emissions sources, such as refrigerants and process emissions, remain on the wider inventory review

Our first-inventory checklist covers the broader preparation sequence. Nitium's carbon footprint analysis service supports activity-data compilation and documented gaps. Discuss a fuel-source data request or email contact@nitium.in.

Sources checked 5 October 2026. This evidence workflow does not establish source completeness by itself, validate technical measurements or provide independent assurance. Qualified personnel should handle equipment and fuel-system matters.