Above 1 MW, standby power architecture typically shifts from a single genset to a paralleled array of two or more units (often configured N+1). The mechanical/electrical room footprint, fuel storage volume, and combustion-air ventilation become significant building-design constraints. EPA Tier 4 Final is universal at this size for diesel; aftertreatment maintenance is a non-trivial part of the lifecycle cost.
94 models in this category.
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Open Basler controller + Mitsubishi V12 engine + Stamford alternator — no proprietary lock-in. Serviceable by any qualified tech, not just the dealer.
1 MW standby · Diesel · Liquid-cooled
1000 kW diesel standby for industrial, data center, and campus power where value engineering and non-proprietary component independence matter.
1000 kW Tier 2 diesel standby generator built by Blue Star Power Systems. Mitsubishi S12H-Y2PTAW-1 37.1L V12 engine, Stamford S6L1D alternator, DSE DCP7310 controller. Three-phase, 208–4160V.
Tier 23-phaseindustrialmunicipal
Blue Star Power Systems
Blue Star MD1250-01
Open Basler controller + Mitsubishi V12 engine + Stamford alternator — no proprietary lock-in. Serviceable by any qualified tech, not just the dealer.
1.3 MW standby · Diesel · Liquid-cooled
1250 kW diesel standby for industrial, data center, and utility-scale applications where value engineering and open-architecture components matter.
1250 kW Tier 2 diesel standby generator built by Blue Star Power Systems. Mitsubishi S12R-Y2PTAW-1 49.0L V12 engine, Stamford S6L1D alternator, DSE DCP7310 controller. Three-phase, 208–4160V.
Tier 23-phaseindustrialmunicipal
Blue Star Power Systems
Blue Star MD1600-01
Open Basler controller + Mitsubishi V16 engine + Stamford alternator — no proprietary lock-in. Serviceable by any qualified tech, not just the dealer.
1.6 MW standby · Diesel · Liquid-cooled
1600 kW diesel standby for industrial, data center, and utility-scale applications where value engineering and non-proprietary components matter.
1600 kW Tier 2 diesel standby generator built by Blue Star Power Systems. Mitsubishi S16R-Y2PTAW-1 65.4L V16 engine, Stamford S7L1D alternator, DSE DCP7310 controller. Three-phase, 208–4160V.
Tier 23-phaseindustrialmunicipal
Blue Star Power Systems
Blue Star NG1050-01
Open Basler controller + PSI V16 engine + Stamford alternator — no proprietary lock-in. 1 MW gas class without OEM dealer dependency.
1.1 MW standby · Natural Gas / LPG · Liquid-cooled
1050 kW natural gas standby for data centers, campus power, and utility-scale gas applications where component independence matters.
1050 kW natural gas / LP standby generator from Blue Star Power Systems. PSI 53L V16 turbocharged-aftercooled, DSE DCP7310 controller, three-phase 480-4160V.
Open Basler controller + PSI V16 engine + Stamford alternator — prime-rated, no proprietary lock-in. Serviceable by any qualified tech.
1.1 MW standby · Natural Gas / LPG · Liquid-cooled
900 kW prime natural gas for continuous-duty data center, CHP, and utility-scale applications needing 24/7 gas-fueled power.
900 kW prime-rated natural gas / LP generator from Blue Star Power Systems. PSI 53L V16 turbocharged-aftercooled, DSE DCP7310 controller, three-phase 480-4160V.
Open Basler controller + PSI high-output V16 engine + Stamford alternator — no proprietary lock-in. 1.25 MW gas class without OEM dealer dependency.
1.3 MW standby · Natural Gas · Liquid-cooled
1250 kW natural-gas-only standby for data centers and utility-scale facilities where gas-fueled backup and component independence matter.
1250 kW natural-gas-only standby generator from Blue Star Power Systems. PSI 53LHO high-output V16 turbocharged-aftercooled, DSE DCP7310 controller, three-phase 480-4160V. LP not available.
1 MW Cat diesel with 3508B V-8. Upgraded 3500-series for data centers. Megawatt from 8 cylinders.
1 MW standby · Diesel · Liquid-cooled
1 MW standby for data centers, hospitals, and mission-critical facilities preferring 3500-series platform.
1000 kW standby diesel generator with Cat 3508B V8 engine, 34.5L displacement. Built for data centers, hospitals, and paralleling arrays requiring 1 MW per unit.
Tier 23-phasedata-centerhospital
Caterpillar
Cat 3512
1000 kW diesel with CAT 3512 V-12. Best resale value in class. ~200 US dealers with parts availability back decades.
1 MW standby · Diesel · Liquid-cooled
1000 kW diesel standby for Tier III data centers, large hospitals, and industrial campuses with CAT fleet.
1000-1400 kVA diesel generator with Cat 3512 V-12 engine. 51.8L displacement, Woodward governor, continuous/prime/standby ratings.
3-phasecommercial-standbyindustrial
Caterpillar
Cat 3512B
1500 kW diesel with CAT 3512B V-12. Best resale -- retains 15-25% more than Cummins/MTU. Deepest parts network.
1.5 MW standby · Diesel · Liquid-cooled
1500 kW diesel standby for Tier III+ data centers, large hospitals, and critical infrastructure.
1230-1500 kW diesel generator with Cat 3512B V-12 engine. EUI fuel system, EMCP 4.2B controller, mission-critical and standby ratings.
3-phasecommercial-standbymission-critical
Caterpillar
Cat 3516
1600 kW diesel with CAT 3516 V-16. Best resale -- retains 15-25% more than competitors. ~200 US dealer network.
1.6 MW standby · Diesel · Liquid-cooled
1600 kW diesel standby for large data centers, hospitals, and industrial campuses with CAT fleet standardization.
1600 kW diesel generator with Cat 3516 turbocharged V-16 engine. Mission-critical platform for data centers, hospitals, and large industrial standby and prime power.
3-phasedata-centerhospital
Caterpillar
Cat C32
1000 kW diesel with CAT C32 V-12. Best resale value in class. ~200 US dealers. Paralleling for multi-MW.
1 MW standby · Diesel · Liquid-cooled
1000 kW diesel standby for Tier III data centers, large hospitals, and industrial campuses with CAT fleet.
1000 kW diesel standby generator with Cat C32 ACERT V-12 engine. Mission-critical platform for data centers, hospitals, and large campus power.
Tier 23-phasedata-centerhospital
Caterpillar
Cat C32B
1500 kW diesel with CAT C32B V-12. EPA Tier 2. Best resale in class. ~200 US dealers. Paralleling for multi-MW.
1.5 MW standby · Diesel · Liquid-cooled
1500 kW diesel standby for Tier III+ data centers, hospitals, and mission-critical campus infrastructure.
1 MW Cat diesel with C32 V-12. Megawatt-class at GC pricing. Medium voltage available. Paralleling ready.
1 MW standby · Diesel · Liquid-cooled
1 MW standby for data centers, hospitals, and paralleling arrays needing megawatt-class GC power.
1000 kW diesel standby generator from Cat's GC value-engineered line. C32 V-12 engine with simplified controls for mission-critical standby.
Tier 23-phasestandbydata-center
Caterpillar
Cat D1100 GC
1.1 MW Cat diesel with C32 V-12. Above-megawatt with 1 MW prime. GC value for mission-critical.
1.1 MW standby · Diesel · Liquid-cooled
1.1 MW standby for data centers needing above-megawatt capacity with GC value proposition.
1100 kW diesel standby generator from Cat's GC value-engineered line. C32 V-12 engine with simplified controls for mission-critical standby.
Tier 23-phasestandbydata-center
Caterpillar
Cat D1250 GC
1.25 MW Cat diesel with evolved C32B V-12. Flagship GC model. Maximum single-unit GC power.
1.3 MW standby · Diesel · Liquid-cooled
1.25 MW standby for data centers and hospitals needing maximum GC single-unit capacity.
1250 kW diesel standby generator from Cat's GC value-engineered line. C32B V-12 engine with simplified controls for mission-critical standby.
Tier 23-phasestandbydata-center
Caterpillar
Cat D1500
1.5 MW Cat diesel with C32B V-12. Cat's newest flagship. Maximum power density for data centers.
1.5 MW standby · Diesel · Liquid-cooled
1.5 MW standby for Tier III+ data centers and large hospitals needing maximum single-unit density.
1500 kW standby diesel generator with Cat C32B V12 engine, 32.1L displacement. Cat's newest 1.5 MW platform — maximum power density for space-constrained data centers.
Tier 23-phasedata-centerhospital
Caterpillar
Cat G3516H
1982 kW natural gas with CAT G3516H V-16. 43.5% electrical efficiency. Cogeneration-ready. Best resale in class.
2.0 MW standby · Natural Gas · Liquid-cooled
1982 kW natural gas continuous/CHP for industrial cogeneration, distributed generation, and utility power.
1982 kW continuous natural gas generator with Cat G3516H V-16 engine. High-efficiency combined heat and power for industrial, utility, and distributed generation.
3-phasecogenerationdistributed-generation
Caterpillar
Caterpillar 3512C
1500 kW diesel with CAT 3512C V-12. EPA Tier 4 Final. Best resale value in class. ~200 US dealers.
1.5 MW standby · Diesel · Liquid-cooled
1500 kW diesel standby for Tier III+ data centers, hospitals, and emission-sensitive industrial sites.
The Caterpillar 3512C is a 1500 kW standby diesel generator. 51.8L V12 ATAAC, 14.7:1 compression, EPA Tier 2. Fuel: 104.6 gal/hr at full load. Medium-voltage outputs to 13,800V for mission-critical applications.
Tier 23-phasedata-centerhospital-large
Cummins
Cummins C1000 D6
1 MW diesel with QST30 V-12 engine. Full Cummins vertical integration. Paralleling for multi-MW. 10-15% below CAT.
1 MW standby · Diesel · Liquid-cooled
1000 kW diesel standby for Tier III+ data centers, large hospitals, and mission-critical infrastructure requiring megawatt-class power.
1000 kW diesel standby generator with QST30 30L V-12 engine. PowerCommand control, liquid-cooled, for data center, hospital, and mission-critical standby applications requiring megawatt-class power.
Tier 23-phasedata-centerhospital
Cummins
Cummins C1000 N6
1000 kW natural gas with full Cummins vertical integration. QSK60G engine. Paralleling for multi-MW gas installations.
1 MW standby · Natural Gas · Liquid-cooled
1000 kW natural gas standby for Tier III data centers, large campuses, and utility peak shaving on gas.
1000 kW natural gas standby powered by the QSK60G. NFPA 110 Type 10 capable for mission-critical facilities without diesel infrastructure.
1 MW standby · Natural Gas / LPG · Liquid-cooled
1000 kW natural gas standby for hospitals, Tier III+ data centers, large campuses, and mission-critical facilities requiring NFPA 110 Type 10 compliance.
1000 kW natural gas standby generator with QSK60G engine. 1000 kW / 1250 kVA standby, NFPA 110 Type 10 capable, PowerCommand controls, UL 2200, EPA certified.
3-phasecommercial-standbyindustrial-standby
Cummins
Cummins C1100 D6
1100 kW diesel with QSK38 V-12 engine. MCRS fuel injection. Full Cummins vertical integration. Paralleling for multi-MW.
1.1 MW standby · Diesel · Liquid-cooled
1100 kW diesel standby for Tier III+ data centers, large hospitals, and critical infrastructure requiring above-megawatt power.
1100 kW diesel standby generator with QSK38 37.7L V-12 engine and MCRS fuel injection. EPA Tier 2 compliant, PowerCommand control, liquid-cooled, for data center, hospital, and mission-critical standby applications.
Tier 23-phasedata-centerhospital
Cummins
Cummins C1100 N6
1100 kW natural gas standby powered by the QSK60G. High-output megawatt-class gas power without diesel fuel infrastructure.
1.1 MW standby · Natural Gas / LPG · Liquid-cooled
1100 kW natural gas standby for hospitals, data centers, large campuses, and industrial facilities with natural gas service.
1100 kW natural gas standby generator with QSK60G gas engine. 1100 kW / 1375 kVA standby, PowerCommand controls, AmpSentry protection, UL 2200, EPA certified.
3-phasecommercial-standbyindustrial-standby
Cummins
Cummins C1250 D6
1250 kW diesel with QSK38 V-12 engine at full rated output. MCRS fuel injection. Full Cummins vertical integration. Paralleling for multi-MW.
1.3 MW standby · Diesel · Liquid-cooled
1250 kW diesel standby for Tier III+ data centers, large hospitals, and mission-critical infrastructure.
1250 kW diesel standby generator with QSK38 37.7L V-12 engine and MCRS fuel injection. EPA Tier 2 compliant, PowerCommand control, 2P2L cooling, for data center, hospital, and mission-critical standby applications.
