Overview#
The Kohler KG100 is a 100-kilowatt commercial standby generator and the first turbocharged unit in the KG gaseous lineup. Below it, the KG60 and KG80 use naturally-aspirated engines; at 100 kW and above, Kohler transitions to forced-induction platforms that deliver more power from a similar footprint.
This is the sweet spot for medium-to-large commercial facilities: full-service hotels, large retail centers, multi-family residential buildings, light industrial operations, and non-critical hospital loads where gaseous fuel is preferred over diesel.
The turbo difference#
The entire KG40-KG125 line shares Kohler's 6.2L KG6208 V8. The KG40 and KG60 use the naturally-aspirated KG6208; the KG80, KG100, and KG125 add a turbocharger and aftercooler (KG6208TSD/THD) to increase output from the same displacement:
- Higher power density — same engine block delivers 80-125 kW with forced induction
- Better fuel efficiency under load (turbo recovers exhaust energy)
- Additional service items — turbo bearings, intercooler/charge-air cooler, and post-shutdown idle requirements are new wear and operating considerations not present on the NA units
Sizing guidance#
- 80 kW continuous at 80% loading
- Motor starting up to 15 HP without soft-start
- Step up to KG125 if peak demand exceeds 80 kW or large motor starts are frequent
The KG100 is the right call when your load study shows 60-80 kW peak with meaningful motor-starting transients that the KG80 can't absorb cleanly.
Our service experience#
The KG100 turbo platform requires slightly different attention than the NA KG40/KG60. We add turbo inspection (bearing play, oil drain condition, intercooler hose integrity) to the annual service checklist. Otherwise, the ignition and coolant service patterns mirror the rest of the KG line. Operators stepping up from a KG60 should plan for proper post-shutdown idle to protect the turbo bearing.
