01
Collect the operating record
Use interval metering where available and reconcile it with operating shifts, production cycles, generator logs, fuel records and known outage periods. The objective is to understand when demand occurs, not only how much energy was consumed in a month.
02
Separate average from peak
Average kW supports energy calculations. Peak kW or kVA drives equipment and network capacity. Coincident peaks matter more than the sum of every equipment nameplate because not every load operates at maximum at the same time.
03
Classify load by consequence
Critical loads may require uninterrupted or rapidly restored supply. Priority loads may tolerate short interruption. Flexible loads may be shifted or curtailed. This classification can materially change reserve philosophy and capital cost.
04
Capture starts and transient events
Large motors, compressors, pumps, refrigeration and process equipment can create starting currents or short-duration peaks far above normal running demand. These events influence generator, inverter, transformer and protection design.
05
Convert observations into a design duty
The final basis should state normal demand, peak demand, critical demand, operating hours, growth allowance, reserve requirement and any assumptions that still need verification. That becomes the traceable input for feasibility and sizing.