Above 2 MW, generator selection is driven by paralleling architecture, medium-voltage tie-in, and aftertreatment management. Mission-critical sites (Tier-III/IV data centers, large hospitals) typically deploy paralleled MV gensets with dedicated paralleling switchgear, sub-base or above-ground bulk fuel storage, and SCR/DPF aftertreatment serviced by the OEM service network.
32 models in this category.
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2500 kW diesel with CAT 3516C V-16. EPA Tier 4 Final. Best resale in class. Paralleling for multi-MW arrays.
2.5 MW standby · Diesel · Liquid-cooled
2500 kW diesel standby for hyperscale data centers, campus microgrids, and emission-regulated industrial.
2500 kW diesel standby generator with Cat 3516C V-16 engine. The largest Cat genset platform for mission-critical data centers and industrial power.
Tier 23-phasedata-centerhospital-large
Caterpillar
Cat 3516E
3000 kW diesel with CAT 3516E V-16. Best resale value in class. Paralleling for multi-MW. ~200 US dealers.
3 MW standby · Diesel · Liquid-cooled
3000 kW diesel standby for hyperscale data centers, campus microgrids, and utility peak shaving.
Up to 3000 kW diesel generator with Cat 3516E V-16 engine. 78.1L displacement, Tier 2 equivalent, ATAAC aspiration for standby and mission-critical power.
Tier 23-phasecommercial-standbymission-critical
Caterpillar
Cat C175-16
3100 kW diesel with CAT C175-16 V-16. Medium-voltage capable (4160V/13.8kV). Best resale. Paralleling for multi-MW.
3.1 MW standby · Diesel · Liquid-cooled
3100 kW diesel standby for hyperscale data centers, campus microgrids, and mission-critical infrastructure.
2500-3100 kW diesel generator with Cat C175-16 SCAC V-16 engine. 84.7L displacement, Tier 2, mission-critical and standby power for data centers and large industrial facilities.
Tier 23-phasecommercial-standbymission-critical
Caterpillar
Cat C175-20
4000 kW diesel with CAT C175-20 V-20. CAT largest genset. Medium-voltage capable. Best resale in class.
4 MW standby · Diesel · Liquid-cooled
4000 kW diesel standby for hyperscale data centers, utility-scale backup, and campus microgrids.
Up to 4000 kW diesel generator with Cat C175-20 SCAC V-20 engine. 105.8L displacement, mission-critical and continuous duty power for large industrial and utility applications.
3-phasecommercial-standbymission-critical
Caterpillar
Cat G3516H
2027 kW natural gas with CAT G3516H V-16. Medium-voltage capable. Cogeneration-ready. Best resale in class.
2.0 MW standby · Natural Gas · Liquid-cooled
2027 kW natural gas continuous/cogeneration for industrial CHP, distributed generation, and campus power.
Up to 2027 kW natural gas generator with Cat G3516H V-16 engine. Continuous duty, low-emission gas power for cogeneration, distributed generation, and industrial applications.
2022 kW natural gas with CAT G3520E V-20. 41.5% electrical efficiency. Cogeneration-ready. Best resale in class.
2.0 MW standby · Natural Gas · Liquid-cooled
2022 kW natural gas continuous/CHP for industrial cogeneration, distributed generation, and baseload power.
2022 kW continuous natural gas generator with Cat G3520E V-20 engine. High-efficiency CHP platform for industrial, utility, and distributed generation.
3-phasecogenerationdistributed-generation
Caterpillar
Cat G3520H
2519 kW natural gas with CAT G3520H V-20. Medium-voltage capable. Hydrogen-blend ready. Best resale in class.
2.5 MW standby · Natural Gas · Liquid-cooled
2519 kW natural gas continuous/cogeneration for industrial CHP, distributed generation, and campus power.
Up to 2519 kW natural gas generator with Cat G3520H V-20 engine. 97.5L displacement, continuous duty, hydrogen-blend capable for cogeneration and distributed generation.
3-phasecontinuous-dutycogeneration
Cummins
Cummins QSK60
2000 kW diesel with QSK60 engine. Full Cummins vertical integration. Paralleling for multi-MW. 10-15% below CAT 3516.
2 MW standby · Diesel · Liquid-cooled
2000 kW diesel standby for hyperscale data centers, large hospitals, and campus microgrids.
2000 kW diesel standby generator. The data center industry standard — V-16, 60.2L, Tier 2. Cummins' flagship for mission-critical power.
Tier 23-phasedata-centerhospital
Cummins
Cummins QSK78
2750 kW diesel with QSK78 engine. Full Cummins vertical integration. Paralleling for multi-MW. 10-15% below CAT 3516B.
2.8 MW standby · Diesel · Liquid-cooled
2750 kW diesel standby for hyperscale data centers, critical infrastructure, and utility peaking.
2750 kW standby / 2500 kW prime diesel generator with QSK78-G14 V18 engine. EPA Tier 4 Final, 78-liter displacement for mission-critical and data center power.
Tier 4 Final3-phasedata-centerhospital
Cummins
Cummins QSK95
3010 kW diesel with QSK95 engine -- Cummins largest. Full vertical integration. Paralleling for campus-scale power.
3.0 MW standby · Diesel · Liquid-cooled
3010 kW diesel standby for hyperscale data centers, campus microgrids, and utility peak shaving.
3010 kW standby / 2690 kW prime diesel generator with QSK95-G10 V16 engine. EPA Tier 2, quad turbo, MCRS fuel injection, ISO 8528-G3 transient capability.
Tier 23-phasedata-centerhospital
Generac
Generac SD2250/MD2250
2250 kW diesel in SD/MD platform with Baudouin engine. Competitive alternative to CAT 3516 class at lower cost.
2.3 MW standby · Diesel · Liquid-cooled
2250 kW diesel standby for hyperscale data centers, large hospitals, and campus microgrids.
Factory-direct 2 MW diesel at 15-30% below major brands. Mitsubishi S16R V16 — Gillette's largest unit. No proprietary lock-in.
2 MW standby · Diesel · Liquid-cooled
2,000 kW (2 MW) diesel standby for hyperscale data centers, hospitals, industrial campuses, and utility-grade backup.
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.
Tier 23-phasedata-centerhospital
Hipower Systems
Hipower HDI-2000
Data center-grade features at 15-25% below Cat/Cummins/Kohler — full vertical integration with NFPA 110 L1, seismic, and 200 mph wind ratings.
2 MW standby · Diesel · Liquid-cooled
Cost-conscious data centers, hospitals, and industrial facilities needing Big 4 specs at Tier 2 prices.
2000 kW standby diesel generator with Mitsubishi 16-cylinder engine. Flagship heavy-duty industrial unit.
Tier 23-phaseindustrialdata-center
Hipower Systems
Hipower HMW-2230
The largest HMW model — MTU 16V4000 at 2.2 MW. 68L 16-cylinder V, 30,000-hour TBO. The maximum single-unit diesel generator for hyperscale data centers.
2.2 MW standby · Diesel · Liquid-cooled
2+ MW critical standby for hyperscale data centers, utility substations, military base power, and large campus essential electrical systems.
2230 kW MTU 4000-series diesel generator. 2.2 MW single unit. NFPA 110 Level 1, seismic certified. US manufactured in Olathe, Kansas.
Tier 23-phaseindustrial-standbydata-center
Kohler
Kohler 2000REOZMD
2000 kW industrial diesel -- Mitsubishi S16R-Y2PTAW2-1 with Decision-Maker 6000 paralleling. Sub-3% THD, UL 2200, NFPA 110 Level 1.
2 MW standby · Diesel · Liquid-cooled
2000 kW industrial standby for data centers, hospitals, and utility-scale facilities. Parallel-ready for N+1 mission-critical redundancy.
2000 kW diesel industrial generator powered by Mitsubishi. Mission-critical standby for data centers, hospitals, and large commercial facilities.
Tier 23-phasedata-centerhealthcare
Kohler
Kohler 2500REOZDC
2500 kW industrial diesel -- Detroit Diesel/MTU 16V4000G83L with Decision-Maker 6000 paralleling. Sub-3% THD, UL 2200, NFPA 110 Level 1.
2.5 MW standby · Diesel · Liquid-cooled
2500 kW industrial standby for data centers, hospitals, and utility-scale facilities. Parallel-ready for N+1 mission-critical redundancy.
2500 kW diesel industrial generator powered by Detroit Diesel/MTU. Mission-critical standby for data centers, hospitals, and large commercial facilities.
Tier 23-phasedata-centerhealthcare
Kohler
Kohler KD2000
2000 kW KD Series -- Kohler KD62V12 with sub-3% THD and PM pilot exciter. Hurricane-rated enclosures available.
2 MW standby · Diesel · Liquid-cooled
2000 kW industrial standby for data centers, hospitals, and critical infrastructure requiring multi-MW backup with NFPA 110 Level 1.
2000 kW diesel industrial standby generator. KD Series platform for data centers, healthcare, and mission-critical infrastructure requiring multi-megawatt backup.
Tier 23-phasedata-centerhealthcare
Kohler
Kohler KD2250
2250 kW KD Series -- Kohler KD62V12 with sub-3% THD and PM pilot exciter. Hurricane-rated enclosures available.
2.3 MW standby · Diesel · Liquid-cooled
2250 kW industrial standby for data centers, hospitals, and critical infrastructure requiring multi-MW backup with NFPA 110 Level 1.
2250 kW diesel industrial standby generator. KD Series platform for data centers, healthcare, and mission-critical facilities approaching 2 MW.
Tier 23-phasedata-centerhealthcare
Kohler
Kohler KD2500
2500 kW KD Series -- Kohler KD62V12 with sub-3% THD and PM pilot exciter. Hurricane-rated enclosures available.
2.5 MW standby · Diesel · Liquid-cooled
2500 kW industrial standby for data centers, hospitals, and critical infrastructure requiring multi-MW backup with NFPA 110 Level 1.
2500 kW diesel industrial standby generator. KD Series platform for data centers, healthcare, and heavy industrial facilities requiring 2+ MW backup.
Tier 23-phasedata-centerhealthcare
Kohler
Kohler KD2500-4
2500 kW KD Series -- Kohler KD62V12 with sub-3% THD and PM pilot exciter. Hurricane-rated enclosures available.
2.5 MW standby · Diesel · Liquid-cooled
2500 kW industrial standby for data centers, hospitals, and critical infrastructure requiring multi-MW backup with NFPA 110 Level 1.
2500 kW EPA Tier 4 Final diesel industrial standby generator. Dual-certified (emergency and non-emergency) for mission-critical and prime power applications.
Tier 4 Final3-phasedata-centerhealthcare
Kohler
Kohler KD2800
2800 kW KD Series -- Kohler KD83V16 with sub-3% THD and PM pilot exciter. Hurricane-rated enclosures available.
2.8 MW standby · Diesel · Liquid-cooled
2800 kW industrial standby for data centers, hospitals, and critical infrastructure requiring multi-MW backup with NFPA 110 Level 1.
2800 kW diesel industrial standby generator. Upper-range KD Series platform for data centers, healthcare, and mission-critical infrastructure.
Tier 23-phasedata-centerhealthcare
Kohler
Kohler KD3000
3000 kW KD Series -- Kohler KD83V16 engine, skewed stator for sub-3% THD. Purpose-built for multi-MW mission-critical paralleling.
3 MW standby · Diesel · Liquid-cooled
3000 kW industrial standby for Tier IV data centers, large hospitals, and campus microgrids. NFPA 110 Level 1, UL 2200 listed.
3000 kW diesel industrial standby generator. Upper-range KD Series platform for data centers, healthcare, and mission-critical infrastructure.
Tier 23-phasedata-centerhealthcare
Kohler
Kohler KD3250
3250 kW KD Series -- Kohler KD83V16 engine, skewed stator for sub-3% THD. Purpose-built for multi-MW mission-critical paralleling.
3.3 MW standby · Diesel · Liquid-cooled
3250 kW industrial standby for Tier IV data centers, large hospitals, and campus microgrids. NFPA 110 Level 1, UL 2200 listed.
3250 kW diesel industrial standby generator. Upper-range KD Series platform for data centers, healthcare, and mission-critical infrastructure.
Tier 23-phasedata-centerhealthcare
Kohler
Kohler KD3250-4
3250 kW KD Series -- Kohler KD83V16 engine, skewed stator for sub-3% THD. Purpose-built for multi-MW mission-critical paralleling.
3.3 MW standby · Diesel · Liquid-cooled
3250 kW industrial standby for Tier IV data centers, large hospitals, and campus microgrids. NFPA 110 Level 1, UL 2200 listed.
3250 kW EPA Tier 4 Final diesel industrial standby generator. Dual-certified (emergency and non-emergency) for mission-critical and prime power applications.
Tier 4 Final3-phasedata-centerhealthcare
Kohler
Kohler KD3500
3500 kW KD Series -- Kohler KD103V20 engine, skewed stator for sub-3% THD. Purpose-built for multi-MW mission-critical paralleling.
3.5 MW standby · Diesel · Liquid-cooled
3500 kW industrial standby for Tier IV data centers, large hospitals, and campus microgrids. NFPA 110 Level 1, UL 2200 listed.
3500 kW diesel industrial standby generator. Near-top-of-line KD Series platform for data centers, healthcare, and mission-critical infrastructure.
Tier 23-phasedata-centerhealthcare
Kohler
Kohler KD4000
4000 kW KD Series -- Kohler KD103V20 engine, skewed stator for sub-3% THD. Purpose-built for multi-MW mission-critical paralleling.
4 MW standby · Diesel · Liquid-cooled
4000 kW industrial standby for Tier IV data centers, large hospitals, and campus microgrids. NFPA 110 Level 1, UL 2200 listed.
4000 kW diesel industrial standby generator. Flagship KD Series platform — the largest single-engine generator in Kohler's industrial lineup.
Tier 23-phasedata-centerhealthcare
M
MTU
MTU 20V4000 DS2800
2,800 kW diesel standby — MTU 20V4000 95.4L V20. Medium/high-voltage to 13.8kV, ADEC ±0.25%, 20K-hr overhaul, 186 gph.
2.8 MW standby · Diesel · Liquid-cooled
Utility-scale standby at 2.8 MW. Diesel at 186 gph, 480V-13.8kV direct MV connection, 62,000 lb installation.
2800 kW diesel standby generator with MTU 20V4000G83 95.4L 20-cylinder V common-rail engine, EPA Tier 2, 380V–13.8kV including medium voltage, ADEC governor, 7626 x 3099 x 3569 mm, 62,056 lb.
Tier 23-phasecommercial-standbyindustrial-standby
M
MTU
MTU 20V4000 DS3250
3,250 kW diesel standby — top of the MTU product line. 95.4L V20 at 3,490 kWm, 480V-13.8kV, standby-only, 223 gph.
3.3 MW standby · Diesel · Liquid-cooled
Maximum single-unit standby at 3.25 MW. Diesel at 223 gph, 480V-13.8kV medium-voltage, 65,000+ lb power plant.
3250 kW diesel standby generator with MTU 20V4000G83L 95.4L 20-cylinder V common-rail engine, EPA Tier 2, 480V–13.8kV medium and high voltage, ADEC governor. 7766 x 3099 x 3569 mm, 65,369 lb.
