Free Tool · Electrical

DG Set Sizing Calculator

Estimate the diesel generator rating (kVA) your building needs from its connected load, demand factor and backup scope. Adjust the inputs for an instant figure — then get an engineered electrical design from our team.

Your load

Total connected load (kW) 200 kW

Demand factor 0.70

Backup scope

Power factor

Future expansion margin (%) 15%

Largest single motor (kW) — optional 0 kW (none)

Motor starting method

Estimates running load = connected load × demand factor, then adds margin and converts to kVA at your power factor. Motor starting / harmonic loads may need a larger set.

Recommended DG rating—

Required kVA—

Running load—

Design load (+margin)—

Loading on DG—

Config note—

Motor start check—

Get an engineered electrical design — free

Our electrical engineers will firm up the load schedule, DG rating, synchronising and AMF panel scope for your site. We'll attach the estimate above automatically.

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Indicative estimates only — not a binding design. Actual DG rating depends on the detailed load schedule, motor starting, harmonics, altitude and ambient derating.

Need an exact BOQ, rate analysis or measurement sheet?

This is a quick engineering estimate. For tendering, billing or audit, our QS & estimation team prepares an item-wise BOQ, rate analysis and a verified measurement sheet to IS / CPWD norms — backed by 15+ years and ISO 9001:2015 quality processes.

Get a detailed BOQ & rate analysis → WhatsApp our QS team

DG Set Sizing Calculator