Electricity Usage and Measurement
Generator Fuel Runtime Calculator
Generator Fuel Runtime is a worksheet for comparing one electrical condition at a time, with the result tied to its inputs.
Calculate Generator runtime
Use measured values for Generator Fuel Runtime when available and rated values only when they describe the same condition.
Where Generator Fuel Runtime fits
Generator Fuel Runtime turns the visible entries into generator runtime. It works best as a comparison tool where each run has a clear measurement basis.
Generator Fuel Runtime is only useful when demand interval, tariff period, and metering basis match.
Testing usable fuel
Using the sample values, Usable fuel = 120 L; Fuel consumption = 15 L/h, the primary result is 8.00 h.
This Generator Fuel Runtime one-input test is a scale check, showing direction and sensitivity without turning the changed case into a recommendation.
If the changed fuel consumption comes from a real measurement, keep the original Generator Fuel Runtime run so the source of the difference remains clear.
Unit handling for Generator Fuel Runtime
The formula uses Usable fuel, and Fuel consumption to produce Generator runtime. Unit mistakes usually show up as an answer that is off by a factor of 10, 100, or 1,000.
The Generator runtime value and any supporting metrics belong to this same Generator Fuel Runtime case, not to a nearby run with different inputs.
When the scope moves beyond Generator Fuel Runtime, Generator Fuel Consumption keeps that neighboring calculation separate.
Source notes for Generator Fuel Runtime
Collect Usable fuel, and Fuel consumption from the same operating case before reading generator runtime.
- Usable fuel
- Enter usable fuel in L. Default shown: 120 L.
- Fuel consumption
- Enter fuel consumption in L/h. Default shown: 15 L/h.
When your notes point to Generator Load Percentage, open it after saving this baseline so the two cases do not get mixed.
Interpreting Generator Fuel Runtime
If generator runtime is near a limit, preserve the calculated value from Generator Fuel Runtime and apply required margin after the calculation.
What Generator Fuel Runtime leaves out
Reserve fuel and changing load reduce runtime.
- Demand ratchets
- Tiered rates
A numerically valid Generator Fuel Runtime result can still be wrong if the field condition, connection type, tariff period, or equipment rating does not match.
If this answer becomes an input to Electrical Power Cost, copy the value with its units and source note attached.