NetEngineerLabNetwork Engineering Intelligence Platform
Start calculating

TELECOM POWER & ENERGY

Generator Fuel Consumption & Runtime Calculator

Plan generator fuel from the real site load profile and an editable manufacturer curve.

Generator loadFuel tankConsumption curveRuntime reserve
☷

Engineering inputs

Set the engineering assumptions and design parameters.

Generator rating

kW
kVA
PF

Manufacturer fuel curve

Replace these example values with the exact fuel table for the deployed generator model.

L/h
L/h
L/h
L/h
L/h

24-hour / operating load profile

Total entered hours must not exceed 24.

kW
h
kW
h
kW
h
kW
h

Fuel tank & outage target

L
%
L
h
/L
kg/L

Operations & battery coordination

h
kWh
%
▥

Engineering results

Review calculated capacity, limits and design checks.

Fuel plan summary

Average load——
Average fuel rate—
Usable tank runtime—
Equivalent 24 h fuel—
Fuel required for target—
Additional fuel needed—

Engineering detail

Usable tank fuel—
Specific fuel use—
Target fuel cost—
Target CO₂ estimate—
Estimated refills—
Run hours per generator—
Rotation handovers—

Battery coordination

Battery-first delay—
Fuel after battery assist—
Estimated fuel saved—

Per-period fuel calculation

PeriodLoadLoad ratioFuel rateFuel

Engineering notes

Fuel(period) = interpolated manufacturer L/h × operating hours

Preliminary planning only. Verify exact manufacturer fuel data, altitude/temperature derating, transient load, minimum-load limits, tank usable volume, maintenance and local fuel-storage requirements before implementation.

Engineering references & boundaries

Content reviewed: 2026-09-10

Continue with the -48V battery, telecom solar and PUE tools in the Telecom Power & Energy workflow.

Authoritative references

Engineering FAQ

Why use a manufacturer fuel curve instead of a generic fuel-rate formula?

Diesel consumption varies by engine, alternator, emissions package and operating point. Enter the exact 25/50/75/100% fuel table when available; the built-in values are an editable example only.

How is fuel consumption between load points calculated?

The tool uses linear interpolation between the adjacent manufacturer load points, then multiplies the resulting litres per hour by the duration of each load period.

What does fuel reserve mean?

The reserve percentage is fuel intentionally kept unavailable for the planned outage. You can also enter explicitly unusable tank volume for pickup, tank geometry or operating policy.

How does battery assistance affect the result?

Battery assistance is treated as an energy-equivalent delay before generator operation, based on usable battery kWh, discharge efficiency and average load. It is a planning estimate, not a battery discharge-curve simulation.

Can this replace generator manufacturer sizing and fuel-system design?

No. Final design must verify the exact model fuel table, altitude and temperature derating, minimum loading, transient starting load, tank usable volume, fuel return system, maintenance limits and local storage requirements.

ENGINEERING WORKFLOW

Continue the engineering workflow

Current workflowTelecom Power & Energy Workflow

Move from site load through AC/DC distribution, rectifier sizing and operating diagnostics, battery backup, generator fuel, solar generation and facility efficiency as one energy engineering sequence.

Step 6 of 8
Previous-48V Telecom Battery Runtime CalculatorCalculate telecom DC battery runtime, required Ah, parallel strings and constant-power current rise.NextTelecom Solar Power & Battery Sizing CalculatorSize telecom solar PV, battery autonomy, energy balance, economics and emissions for grid-hybrid or off-grid sites.

Related tools

-48V Telecom Battery Runtime CalculatorCalculate telecom DC battery runtime, required Ah, parallel strings and constant-power current rise.Telecom Solar Power & Battery Sizing CalculatorSize telecom solar PV, battery autonomy, energy balance, economics and emissions for grid-hybrid or off-grid sites.Network Rack Power & Cooling CalculatorCalculate rack power, current, cooling load, energy and cost.