Is the SPMI-2M the same engine as the SPMI-1.5M?

Yes — both use the Mitsubishi S16R V16 at 65.37L. The SPMI-2M uses the Y2PTAW2-1 high-output variant (14.0:1 compression) vs. the Y2PTAW-1 (14.5:1 compression) in the SPMI-1.5M. The lower compression ratio with higher boost produces 2,923 bhp vs. 2,346 bhp — 500 kW more output from the same displacement.

What is the fuel consumption at 2 MW?

155 gal/hr at full load. At 75%: 115 gal/hr. At 50%: 79.2 gal/hr. A 10,000-gallon tank at 75% load provides approximately 87 hours of runtime. Most data center specifications require 48-72 hours of on-site fuel autonomy at N+1.

Is the SPMI-2M the largest generator Gillette makes?

Yes — the SPMI-2M at 2,000 kW (2 MW) is Gillette's largest standby generator across all fuel types. It represents the maximum output of the Mitsubishi S16R V16 platform. Larger installations require paralleling multiple units.

How does this compare to Caterpillar or Cummins at 2 MW?

The SPMI-2M competes with Cat's 3516C and Cummins' QSK60 at similar output. Gillette's advantage: open-architecture components (DSE controller, Stamford alternator) with no proprietary dealer dependency. Caterpillar and Cummins have stronger local service networks for 2 MW class units.

Gillette · SPMI Series (Industrial Diesel - Mitsubishi)

Gillette SPMI-2M

2000 kW standby · Diesel · Liquid-cooled

2,000 kW stationary diesel standby generator with Mitsubishi S16R V16 engine. 65.37L displacement, Stamford AVK S7L1DG alternator, PMG excitation. Gillette's largest unit.

Standby power: 2000 kW
Voltage options: 277/480V, 346/600V
Frequency / Phase: 60 Hz · 3-phase
Engine: Mitsubishi S16R-Y2PTAW2-1 · 65.37L
EPA / Emissions: Tier 2
Alternator: Stamford AVK S7L1DG-312

Data Centers Healthcare Manufacturing Commercial Governmentutility

Overview#

The Gillette SPMI-2M is a 2,000-kilowatt (2 MW) stationary diesel standby generator — Gillette's largest unit across all fuel types. It uses the Mitsubishi S16R V16 at the same 65.37L displacement as the SPMI-1.5M but in a high-output calibration producing 2,923 bhp. Stamford AVK S7L1DG alternator with PMG excitation, DSE 7420 MKII with UL 6200.

At 2 MW, this is the upper boundary of single-engine standby generators: large data centers, major hospital complexes, and industrial facilities where a single generator provides building-wide backup or serves as a paralleling module.

SPMI-1.5M vs. SPMI-2M: same engine, 500 kW more#

Spec	SPMI-1.5M	SPMI-2M
Engine	S16R-Y2PTAW-1	S16R-Y2PTAW2-1
Compression ratio	14.5:1	14.0:1
Standby kW	1,500	2,000
Standby bhp	2,346	2,923
Fuel (100%)	127 gal/hr	155 gal/hr
Open weight	34,450 lbs	37,725 lbs
Dimensions	240 × 102 × 135 in	240 × 102 × 135 in

Same footprint, same engine block, 33% more output through lower compression and higher boost. For data centers specifying N+1 paralleled generator systems, the SPMI-2M provides the maximum single-unit capacity, reducing the total number of units required.

2 MW installation — facility-class infrastructure#

At 37,725 lbs (18.9 tons), the SPMI-2M requires:

Purpose-built generator room — no enclosure option at this scale; acoustic treatment is part of the building design
Heavy crane access — 25-30 ton crane for placement, engineered rigging plan
Large fuel storage — 155 gal/hr means 10,000+ gallon tanks for 48+ hour autonomy
Medium-voltage distribution — 480V/600V only; campus systems use step-up transformers
Dedicated exhaust system — engineered for the V16's exhaust volume and temperature

Our service experience#

The SPMI-2M is a critical infrastructure asset. We service units at this scale under formal maintenance contracts with defined SLAs: semi-annual full-load testing, quarterly fuel system service, monthly exercising, and 24/7 remote monitoring. Fuel quality management at 155 gal/hr consumption requires professional fuel testing and polishing — this is not a DIY maintenance item. The V16 with 16-cylinder dual injection requires multi-day service windows for comprehensive fuel system maintenance.

Engineering specifications

Physical

Length: 240 in
Width: 102 in
Height: 135 in
Wet weight: 37,725 lb

Acoustic

Sound @ 7m, full load: 98 dBA
Enclosure: Open

Fuel system & runtime

Fuel use @ full load: 155 GPH

Photos

Documents & downloads

Spec sheets & manuals

Spec sheet (datasheet)

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Estimate runtime for the Gillette SPMI-2M

Adjust load percent and tank size to estimate runtime. Pre-filled with this model's spec where available.

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Generator size

Fuel

Fuel tank capacity

gal

Load

Override full-load GPH (optional)

GPH

Estimated runtime

1.7 hours(0.1 days)

Fuel consumption ≈ 119.57 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 Gillette SPMI-2M 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

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.

Component	Symptom	Typical hours	Severity
Turbocharger(s)	Major power loss at full output	12,000+	severe
Fuel system (dual Mitsubishi PS8)	Injector fouling, unbalanced cylinder output	10,000+	severe
PMG excitation system	Voltage regulation failure under load	20,000+	severe

Frequently Asked Questions

Is the SPMI-2M the same engine as the SPMI-1.5M?: Yes — both use the Mitsubishi S16R V16 at 65.37L. The SPMI-2M uses the Y2PTAW2-1 high-output variant (14.0:1 compression) vs. the Y2PTAW-1 (14.5:1 compression) in the SPMI-1.5M. The lower compression ratio with higher boost produces 2,923 bhp vs. 2,346 bhp — 500 kW more output from the same displacement.
What is the fuel consumption at 2 MW?: 155 gal/hr at full load. At 75%: 115 gal/hr. At 50%: 79.2 gal/hr. A 10,000-gallon tank at 75% load provides approximately 87 hours of runtime. Most data center specifications require 48-72 hours of on-site fuel autonomy at N+1.
Is the SPMI-2M the largest generator Gillette makes?: Yes — the SPMI-2M at 2,000 kW (2 MW) is Gillette's largest standby generator across all fuel types. It represents the maximum output of the Mitsubishi S16R V16 platform. Larger installations require paralleling multiple units.
How does this compare to Caterpillar or Cummins at 2 MW?: The SPMI-2M competes with Cat's 3516C and Cummins' QSK60 at similar output. Gillette's advantage: open-architecture components (DSE controller, Stamford alternator) with no proprietary dealer dependency. Caterpillar and Cummins have stronger local service networks for 2 MW class units.

Compatible equipment

Engine

Mitsubishi S16R-Y2PTAW2-1Engines

Controllers

DSE 7420 MkIIControllers

Transfer switches

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