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Bulk fuel supply
Diesel, gasoline, off-road and renewable diesel on scheduled, keep-full or emergency delivery.
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Secure Supplies Group · Fuel Intelligence
Fleet, DEF & Emissions Calculators
Thirty-seven procurement and engineering calculators for fuel, DEF, tanks, generators, marine and aviation uplift, industrial and specialty gases, hydrogen, propane and delivered items. Every tool runs on your own figures, states the basis it calculated on, and carries the result through to the Supply Desk with you.
Method
How these estimates are built
Every figure on this page comes from a published, stated assumption and an arithmetic formula you can reproduce in a spreadsheet. Nothing is hidden behind a lookup we will not show you.
- Fueling labor uses $32/hour fully burdened labor and 45 minutes per retail refueling trip, across 52 weeks a year.
- DEF demand is calculated at 3% of the diesel volume your fleet size, annual mileage and fuel economy imply.
- Greenhouse-gas totals combine vehicle and stationary-asset fuel burn against per-gallon CO₂, CH₄ and N₂O factors shown live in the results panel.
- Renewable diesel is modelled as an 80% lifecycle reduction scenario against conventional diesel — a planning scenario, not a certified carbon-intensity score.
- Mobile fueling CO₂ reduction uses 60 lb avoided per diesel event and 51 lb per gasoline event.
Factor Table
Per-gallon emissions factors in use
| Fuel | CO₂ kg/gal | CH₄ g/gal | N₂O g/gal |
|---|---|---|---|
| Diesel | 10.21 | 0.1480 | 0.2580 |
| Gasoline | 8.78 | 0.2567 | 0.2130 |
| Renewable diesel / HVO | 2.042 | 0.0296 | 0.0516 |
Factors are held as plain constants in the page script so they can be revised as public reference data is updated. Results are planning estimates, not a regulatory lifecycle certification.
Next Step
Turn the numbers into a supply program
Bring the output of any calculator to the supply desk and we will price the delivered program behind it.
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DEF / AdBlue supply
Bulk DEF, IBCs, drums, storage and dispensing sized to the annual demand the calculator returns.
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Fleet & mobile fueling
Wet-hose and on-site fueling routes that remove the out-of-route trips these estimates price.
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Lock Supply
Send us the estimate and we will price the program.
Include fleet size, locations, product grade, delivery access and whether you need spot coverage or recurring service.