Kohler · RZG Series (Industrial Gaseous)

Kohler 150REZGC

150 kW standby · LPG · Liquid-cooled

150 kW LPG industrial standby generator. Enclosed gaseous standby with PSI engine for mid-range commercial and institutional applications.

Kohler Kohler 150REZGC generator — specifications and details
Standby power
150 kW
Voltage options
120/208V, 277/480V
Frequency / Phase
60 Hz · 3-phase
Engine
PSI 8.8L Industrial · 8.8L
Alternator
Kohler Brushless, Permanent-Magnet
CommercialHealthcareGovernmentindustrial-light
Configure & QuoteDownload spec sheet

Overview#

The Kohler 150REZGC is a 150-kilowatt LPG industrial standby generator in an enclosed configuration. Rated at 106-150 kW standby depending on voltage, it uses a PSI (Power Solutions International) engine paired with a brushless rare-earth permanent-magnet alternator at 1800 RPM. This unit is EPA certified for stationary emergency applications and targets mid-range commercial facilities, healthcare, and education campuses.

Gaseous vs diesel at 150 kW#

At 150 kW, gaseous generators eliminate on-site fuel storage and SPCC compliance. Propane provides clean combustion with lower emissions than diesel, and there is no fuel degradation concern during low-runtime standby service. However, propane supply must be sized for the expected outage duration, and delivery logistics become a factor during regional emergencies.

Our service experience#

PowerGen provides installation, maintenance, and emergency service for Kohler gaseous generators throughout Northern California. The PSI engine platform in the larger RZG units delivers strong performance in the 100-150 kW class, and we structure PM programs around annual ignition, fuel system, and coolant inspections.

Engineering specifications

Physical

Length
110.2 in
Width
44.1 in
Height
60.6 in
Wet weight
3,175 lb

Fuel system & runtime

NG required pressure
7 in WC

Photos

Kohler 150REZGC — product photo

Documents & downloads

Spec sheets & manuals

Ready to order this model?

Configure your Kohler 150REZGC

Lock the enclosure, fuel system, transfer switch, and add-ons — we'll confirm pricing, availability, and lead time within one business day. Prefer a free-form quote? That option is still here.

Configure & Quote →Just request a quoteDownload datasheet

Service intervals

Manufacturer-recommended intervals for the Kohler 150REZGC under standby duty. Field intervals may differ based on load profile, ambient conditions, and fuel quality.

Oil & filter
Every 250 hours or 12 months
Coolant change
Every 3000 hours
Air filter
Every 500 hours
Spark plugs
Every 500 hours
Major overhaul
≈ 8,000 hours
Load bank test
Every 12 months

Common failure modes

What we've seen fail on this platform. Use as a service-planning reference, not a diagnostic — actual failure modes depend heavily on duty cycle and maintenance history.

ComponentSymptomTypical hoursSeverity
Spark plugs / ignitionMisfire under load, cylinder dropout codes, rough idle500+minor
Turbocharger sealsOil in intake, blue smoke, boost pressure loss10,000+moderate
Fuel pressure regulator / vaporizerHard starting, gas pressure fault, erratic idle8,000+moderate
Battery (starting)Slow crank, failed exercise8,760+minor

Frequently Asked Questions

What is the standby rating of the Kohler 150REZGC?
The 150REZGC is rated 106-150 kW standby (106-188 kVA) depending on voltage configuration, operating on LPG at 60 Hz.
What fuel does the Kohler 150REZGC use?
The 150REZGC operates on LPG (propane). Natural gas and dual-fuel variants are also available in the RZG line.
What is the difference between RZX and REZX models?
RZX designates the open-frame (skid-mounted) configuration, while REZX is the enclosed (sound-attenuated or weather-protective) version. Both use the same engine-alternator package; the difference is the enclosure.

Compatible equipment

Transfer switches

More in the RZG Series (Industrial Gaseous)

Kohler RZG Series: 100–150 kW LPG generators with GM and PSI engines in enclosed and open-frame configurations.

View all 4models in this series →

Similar models

Kohler Kohler 150RZGC 150 kW liquid-cooled standby generator

Kohler

Kohler 150RZGC

150 kW industrial gaseous -- PSI 8.8L Industrial with PM alternator, sub-3% THD. No on-site fuel storage required.

150 kW standby · LPG · Liquid-cooled

135 kW LPG industrial standby generator. Open-frame gaseous standby with PSI engine for commercial and industrial facilities.

3-phasecommercialhealthcare
Kohler Kohler 100REZGD 100 kW liquid-cooled standby generator

Kohler

Kohler 100REZGD

100 kW industrial gaseous -- General Motors Vortec 5.7L with PM alternator, sub-3% THD. No on-site fuel storage required.

100 kW standby · LPG · Liquid-cooled

100 kW LPG industrial standby generator. Enclosed gaseous standby for commercial and institutional applications requiring clean-burning propane fuel.

3-phasecommercialhealthcare
Kohler Kohler 150REOZJ4 150 kW liquid-cooled standby generator

Kohler

Kohler 150REOZJ4

THD below 3% at 150 kW -- the healthcare and commercial default. John Deere 6068HG550 with Decision-Maker controller.

150 kW standby · Diesel · Liquid-cooled

154 kW diesel commercial standby generator powered by John Deere. Reliable standby power for commercial and institutional facilities.

Tier 4 Final3-phasecommercialhealthcare

Need service or parts for the Kohler 150REZGC?

We service every major OEM and stock genuine parts for the most common models.

Get A QuoteOr call (209) 229-1990