Diesel theft, idling time, and unmetered generator runtime routinely eat 8-15% of fuel budgets on Indian sites. How to catch it before it compounds.
Fuel is one of the largest recurring costs on any site running excavators, cranes, concrete pumps, and diesel generators — and it is also one of the least visible, because consumption is rarely tracked against actual work done. Unlike material wastage, which shows up as a visible shortfall against BOQ, fuel leakage is invisible unless it is specifically measured, which is exactly why it tends to persist for entire projects unnoticed.
Equipment left running while waiting for the next task, or generators kept on through breaks and shift changes rather than switched off, consumes fuel with zero productive output. On a typical multi-machine site, idling time can plausibly account for a larger share of total fuel leakage than outright pilferage, simply because it happens constantly and in small increments that are never individually noticed or logged. The fix is largely procedural — a clear "switch off if not actively working" instruction, enforced and periodically checked, rather than a technology purchase.
Siphoning from equipment tanks or bulk storage remains a material risk wherever fuel issuance is not measured and logged against a specific machine and operator. Equipment left on site overnight, particularly on projects without dedicated security or a fenced storage area, is the highest-risk point. A simple control — fuel issued only against a logged litre quantity, hour-meter reading, and operator sign-off, cross-checked periodically against expected consumption for that machine type — closes most of this gap without requiring locking fuel caps or tank sensors, though those are additional options for higher-risk sites.
Diesel generators are frequently budgeted and even billed (on hired DG arrangements) by assumed running hours rather than logged actual hours. A generator assumed to run 10 hours a day that is actually running 12-13 hours (covering early starts, late finishes, or load testing) creates a real gap between budgeted and actual fuel consumption that compounds daily across a project. Logging actual DG hour-meter readings, even manually once per shift, closes this gap and also gives a genuine basis for querying a hired DG bill that seems inconsistent with logged hours.
On wet-hire arrangements (equipment plus operator supplied by the vendor, fuel supplied by the site), the site bears the fuel cost even though it does not own the machine — and without a fuel log, there is no way to verify that logged consumption matches actual work output. Hiring transfers ownership and maintenance risk to the vendor, but it does not automatically transfer fuel accountability, and sites that assume it does are frequently the ones with the least visibility into where hired-equipment fuel is actually going.
Sites with tight fuel control maintain a per-machine fuel log as a standard daily site record, not an occasional audit exercise, and review logged consumption against expected norms for that equipment type on a weekly basis rather than only at monthly fuel bill reconciliation — catching a leakage pattern within a week is materially cheaper than discovering it after a full billing cycle.
