Generators

Generator Sizing Calculator

Calculate the required generator size from total load and a derating factor (Size = Load ÷ Derating Factor).

Generator Load Calculator

Calculate a generator's actual load from its rated size and load percentage (Load = Size × (Load % ÷ 100)).

Generator Fuel Consumption Calculator

Estimate a generator's fuel consumption from its load and fuel consumption rate (Fuel = Load × Rate).

Formula

Generator Sizing Formula

The generator sizing formula, its variables, and why a derating factor is applied to the load.

Example

Generator Examples

Worked, step-by-step examples calculating generator sizing, load, and fuel consumption.

Guide

Understanding Generator Sizing

Why generators are sized with a safety margin, how load percentage works, and how fuel consumption is estimated.