Kohler · REOZ Series (Diesel Industrial Large)

Kohler 1000REOZMD

1020 kW standby / 925 kW prime · Diesel · Liquid-cooled

1020 kW diesel industrial standby generator powered by Mitsubishi. Large-frame REOZ for data centers, hospitals, and mission-critical facilities.

Kohler Kohler 1000REOZMD generator — specifications and details
Standby power
1020 kW / 925 kW prime
Voltage options
277/480V, 4160V, 12470V, 13200V, 13800V
Frequency / Phase
60 Hz · 3-phase
Engine
Mitsubishi S12H-Y2PTAW-1 · 37.11L
EPA / Emissions
Tier 2
Alternator
Kohler

Overview#

The Kohler 1000REOZMD is a 1020-kilowatt standby (925 kW prime) diesel generator powered by a Mitsubishi S12H-Y2PTAW-1 V12 engine rated at 1528 HP at 1800 RPM. This megawatt-class unit serves mission-critical standby applications including data centers, hospitals, and large industrial facilities. Medium-voltage options (4160V–13800V) are available.

Our service experience#

OnPoint Generators services Kohler REOZ diesel generators throughout Northern California. Megawatt-class units require specialized service capabilities including medium-voltage expertise and large-capacity load bank testing.

Engineering specifications

Physical

Length
201 in
Width
76 in
Height
101.2 in
Wet weight
21,600 lb

Fuel system & runtime

Fuel use @ full load
75 GPH
Fuel use @ 75% load
59.7 GPH

Documents & downloads

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Estimated runtime

3.5 hours(0.1 days)

Fuel consumption ≈ 57.86 GPH at 75% load. Estimate based on industry-typical 1800 RPM standby curves (≈0.07 GPH/kW at full load). Actual consumption varies by engine, ambient temperature, fuel quality, and tuning.

Service intervals

Manufacturer-recommended intervals for the Kohler 1000REOZMD under standby duty. Field intervals may differ based on load profile, ambient conditions, and fuel quality.

Oil & filter
Every 500 hours or 12 months
Coolant change
Every 6000 hours
Air filter
Every 1000 hours
Fuel filter
Every 500 hours
Major overhaul
20,000 hours
Load bank test
Every 12 months

Frequently Asked Questions

What engine powers the Kohler 1000REOZMD?
The 1000REOZMD uses a Mitsubishi S12H-Y2PTAW-1 V12 diesel engine rated at 1528 HP running at 1800 RPM with Tier 2 emissions certification.
What is the standby power rating of the 1000REOZMD?
The 1000REOZMD is rated at 1020 kW standby and 925 kW prime at 277/480V, 0.8 power factor, 60 Hz per Kohler published specifications.
Does OnPoint service the Kohler 1000REOZMD?
Yes. OnPoint Generators provides maintenance, repair, and load bank testing for Kohler REOZ diesel generators throughout Northern California, including megawatt-class units.

Compatible equipment

Why we recommend Kohler

Kohler is our primary recommendation for commercial standby power. We sell and service the full Kohler line — RCA residential, RCL light commercial, KG industrial diesel, and REOZ large-frame — and our technicians are factory-trained on every product family.

We are an authorized Kohler dealer with factory-trained technicians. Kohler is the majority of our new generator sales today, spanning residential through large industrial. Our parts inventory is stocked for same-day Kohler service.

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