A 100 kVA generator delivers approximately 80 kW of usable power — enough to run a medium supermarket, a hotel, or a 40-workstation office block including lifts and air conditioning. At 75% load it consumes roughly 17.1 litres of diesel per hour. In South Africa a 100 kVA silent diesel generator typically costs between R185 000 and R240 000 excluding VAT and installation.
Pricing verified August 2026
Compare full specifications for matching models in the catalogue: 100 kVA Three Phase Silent Diesel Generator, 100 kVA Three Phase Silent Diesel Generator, 100 kVA Three Phase Open Frame Diesel Generator, 90 kVA Three Phase Silent Diesel Generator, 110 kVA Three Phase Silent Diesel Generator, 80 kVA Three Phase Silent Diesel Generator, 125 kVA Three Phase Silent Diesel Generator and 70 kVA Three Phase Silent Diesel Generator.
Not sure this is the right size? Try our generator sizing calculator, healthcare and hospitals power solutions and manufacturing and industrial power solutions.
A 100 kVA set most often falls into these ranges: diesel generators, three phase generators and silent diesel generators.
Guides that reference 100 kVA sizing: How to Size a Generator for Your Business, Generator Running Costs Explained and Load Shedding Backup Power Options for Homes and Business.
What a 100 kVA generator will run
Running cost at 100 kVA
Available 100 kVA generators
Every 100 kVA unit currently in the range, compared side by side.
| Model | Engine | Prime | Standby | Phase | Fuel @75% | Noise | Weight | Price excl. VAT |
|---|---|---|---|---|---|---|---|---|
| AGP 100 Perkins Silent | Perkins 1104C-44TAG2 | 100 kVA | 110 kVA | Three | 17.1 l/h | 72 dB | 1870 kg | R198 500 |
| AGP 100 Cummins Silent | Cummins 6BTAA5.9-G12 | 100 kVA | 110 kVA | Three | 18.4 l/h | 74 dB | 1940 kg | R211 000 |
| AGP 100 Baudouin Silent | Baudouin 4M11G1/5 | 100 kVA | 110 kVA | Three | 17.8 l/h | 73 dB | 1905 kg | R204 750 |
| AGP 100 SDEC Silent | SDEC SC4H115D2 | 100 kVA | 110 kVA | Three | 19.2 l/h | 75 dB | 1860 kg | R186 900 |
Is 100 kVA the right size?
Size for about 25% above your calculated peak, and remember motor starting current can be three to seven times running current. If your largest motor is above 22 kW, look at 150 kVA instead.
100 kVA generator FAQs
A 100 kVA silent diesel generator typically costs between R185,000 and R240,000 excluding VAT, delivery and installation. The engine brand, control panel specification and canopy rating account for most of the variation.
At 75% load a typical 100 kVA diesel set consumes roughly 17 litres per hour. At R23.50/L that is about R400 per hour, or around R3,200 for an eight-hour day.
About 80 kW of usable power — enough for a medium supermarket, hotel or 40-workstation office block including lifts and air conditioning when loads are diversified correctly.
Commercial 100 kVA sets are almost always three-phase 400 V. Single-phase at this rating is not practical for balanced commercial boards.
A structural plinth, correct clearances for the canopy, exhaust routing, earthing, fuel system and an AMF/ATS package installed to SANS 10142-1 with a Certificate of Compliance on handover.
A typical 350 litre base tank at 75% load yields around 20 hours of runtime before refuelling. Extended tanks and bulk bowsers are available for prime-power sites.