A 40 kVA generator delivers approximately 32 kW of usable power — enough to run an office block or supermarket cold-chain wing with lifts on diversity. At 75% load it consumes roughly 7.5 litres of diesel per hour. In South Africa a 40 kVA silent diesel generator typically costs between R105 000 and R148 000 excluding VAT and installation.
Pricing verified August 2026
Compare full specifications for matching models in the catalogue: 40 kVA Three Phase Silent Diesel Generator, 35 kVA Single Phase Silent Diesel Generator, 45 kVA Three Phase Silent Diesel Generator, 30 kVA Single Phase Silent Diesel Generator, 30 kVA Three Phase Silent Diesel Generator, 50 kVA Three Phase Silent Diesel Generator, 30 kVA Three Phase Open Frame Diesel Generator and 30 kVA Three Phase Trailer Mounted Diesel Generator.
Not sure this is the right size? Try our generator sizing calculator, agriculture and irrigation power solutions and retail and shopping centres power solutions.
A 40 kVA set most often falls into these ranges: diesel generators, three phase generators and silent diesel generators.
What a 40 kVA generator will run
Running cost at 40 kVA
Available 40 kVA generators
Every 40 kVA unit currently in the range, compared side by side.
| Model | Engine | Prime | Standby | Phase | Fuel @75% | Noise | Weight | Price excl. VAT |
|---|---|---|---|---|---|---|---|---|
| AGP 40 Perkins Silent | Perkins 1103A-33TG | 40 kVA | 44 kVA | Three | 7.4 l/h | 69 dB | 980 kg | R132 000 |
| AGP 40 Cummins Silent | Cummins 4BT3.9 | 40 kVA | 44 kVA | Three | 7.5 l/h | 70 dB | 1020 kg | R138 500 |
| AGP 40 Baudouin Silent | Baudouin 4M06 | 40 kVA | 44 kVA | Three | 7.6 l/h | 70 dB | 995 kg | R128 000 |
| AGP 40 FAW Silent | FAW 40G | 40 kVA | 44 kVA | Three | 7.7 l/h | 71 dB | 940 kg | R112 500 |
Is 40 kVA the right size?
Forty kVA fits many mid-size commercial boards. Lift and cold-room starting can triple running current briefly — if multiple large motors start together, consider 50–60 kVA.
40 kVA generator FAQs
Typical silent three-phase 40 kVA pricing sits between R105,000 and R148,000 excl. VAT before delivery and install.
About 7.5 L/h at 75% load (~R176/h at R23.50/L).
Around 32 kW — office blocks, supermarket cold-chain sections and similar mixed commercial loads.
Three-phase is standard. Single-phase at this rating is rare and inefficient for commercial boards.
Engineered pad, acoustic siting, fuel system, AMF panel, earthing and full SANS 10142-1 integration.
Often one hydraulic or smaller traction lift yes, with soft start. Multiple lifts or large traction units need a dedicated motor study.