EPA Tier 2 covered most engines manufactured 2003–2010 and remains the dominant tier in the installed base of pre-T4F industrial gensets. Tier 2 units have no DPF or SCR — operations are simpler, but emissions and PM output are higher. Many municipalities allow continued operation of legacy Tier 2 emergency-standby units indefinitely; some jurisdictions (notably parts of California) have begun retire-or-retrofit programs.
183 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 MD2000-01
Open Basler controller + Mitsubishi V16 engine + Stamford alternator — no proprietary lock-in. 2 MW class without OEM dealer dependency.
2 MW standby · Diesel · Liquid-cooled
2000 kW diesel standby for data centers, hospitals, and utility-scale applications where component independence and value engineering matter.
2000 kW Tier 2 diesel standby generator built by Blue Star Power Systems. Mitsubishi S16R-Y2PTAW2-1 65.4L V16 engine, Stamford S7L1D alternator, DSE DCP7310 controller. Three-phase, 208–4160V.
Tier 23-phaseindustrialmunicipal
Blue Star Power Systems
Blue Star MD800-01
Open Basler controller + Mitsubishi V12 engine + Stamford alternator — no proprietary lock-in. Serviceable by any qualified tech, not just the dealer.
800 kW standby · Diesel · Liquid-cooled
800 kW diesel standby for industrial plants, campus power, and data centers where value engineering and non-proprietary component access matter.
800 kW Tier 2 diesel standby generator built by Blue Star Power Systems. Mitsubishi S12A2-Y2PTAW-2 33.9L V12 engine, Stamford S6L1D alternator, DSE DCP7310 controller. Three-phase, 208–4160V.
Tier 23-phaseindustrialmunicipal
Blue Star Power Systems
Blue Star PD500-01
Open Basler controller + Perkins engine + Stamford alternator — no proprietary lock-in. Serviceable by any qualified tech, not just the dealer.
500 kW standby · Diesel · Liquid-cooled
500 kW diesel standby for industrial, data center, and campus facilities where value engineering and non-proprietary component access matter.
500 kW Tier 2 diesel standby generator built by Blue Star Power Systems. Perkins 2506C-E15TAG3 six-cylinder engine with charge air cooling, Stamford HCI534D alternator, DSE DCP7310 controller.
Tier 23-phasecommercialindustrial
Blue Star Power Systems
Blue Star PD550-01
Open Basler controller + Perkins engine + Stamford alternator — no proprietary lock-in. Serviceable by any qualified tech, not just the dealer.
550 kW standby · Diesel · Liquid-cooled
550 kW diesel standby for industrial, data center, and campus facilities where value engineering and open-architecture components matter.
550 kW Tier 2 diesel standby generator built by Blue Star Power Systems. Perkins 2506C-E15TAG4 six-cylinder engine with charge air cooling, Stamford HCI534E alternator, DSE DCP7310 controller.
Tier 23-phasecommercialindustrial
Blue Star Power Systems
Blue Star PD600-01
Open Basler controller + Perkins engine + Stamford alternator — no proprietary lock-in. Serviceable by any qualified tech, not just the dealer.
600 kW standby · Diesel · Liquid-cooled
600 kW diesel standby for industrial, data center, and campus power where value engineering and non-proprietary component access matter.
600 kW Tier 2 diesel standby generator built by Blue Star Power Systems. Perkins 2806C-E18TAG3 six-cylinder engine with charge air cooling, Stamford HCI534E alternator, DSE DCP7310 controller.
Tier 23-phasecommercialindustrial
Blue Star Power Systems
Blue Star PD750-01
Open Basler controller + Perkins engine + Stamford alternator — no proprietary lock-in. Serviceable by any qualified tech, not just the dealer.
750 kW standby · Diesel · Liquid-cooled
750 kW diesel standby for industrial, data center, and mission-critical facilities where value engineering and non-proprietary components matter.
750 kW Tier 2 diesel standby generator built by Blue Star Power Systems. Perkins 2806C-E18TTAG7 twin-turbocharged six-cylinder engine, Stamford S6L1D-C alternator, DSE DCP7310 controller.
Tier 23-phasecommercialindustrial
Blue Star Power Systems
Blue Star VD500-01
Open Basler controller + Volvo Penta engine + Stamford alternator — no proprietary lock-in. Serviceable by any qualified tech, not just the dealer.
500 kW standby · Diesel · Liquid-cooled
500 kW diesel standby for industrial, data center, and campus facilities where value engineering and non-proprietary component access matter.
500 kW Tier 2 diesel standby generator from Blue Star Power Systems. Volvo Penta TAD1641GE-B 16.1L inline-six with DSE DCP7310 controller, 208-600V output.
Tier 23-phasecommerciallarge-commercial
Blue Star Power Systems
Blue Star VD550-01
Open Basler controller + Volvo Penta engine + Stamford alternator — no proprietary lock-in. Serviceable by any qualified tech, not just the dealer.
550 kW standby · Diesel · Liquid-cooled
550 kW diesel standby for industrial, data center, and campus facilities where value engineering and open-architecture components matter.
550 kW Tier 2 diesel standby generator from Blue Star Power Systems. Volvo Penta TAD1642GE-B 16.1L inline-six with DSE DCP7310 controller, 208-600V output.
Tier 23-phasecommerciallarge-commercial
Blue Star Power Systems
Blue Star VD600-01
Open Basler DGC-2020 controller + Volvo Penta engine + Stamford alternator — no proprietary lock-in. Serviceable by any qualified tech.
600 kW standby · Diesel · Liquid-cooled
600 kW diesel standby for industrial, data center, and campus power where value engineering and non-proprietary component access matter.
600 kW EPA Tier 2 diesel standby generator from Blue Star Power Systems. Volvo Penta TWD1643GE 16.1L inline-six, 208-4160V output, available with medium-voltage option.
Tier 23-phaselarge-commercialhospital
Blue Star Power Systems
Blue Star VD600-03
Open Basler controller + Volvo Penta engine + Stamford alternator — no proprietary lock-in. Serviceable by any qualified tech, not just the dealer.
600 kW standby · Diesel · Liquid-cooled
600 kW diesel standby for industrial, data center, and campus power where value engineering and non-proprietary component access matter.
600 kW Tier 2 diesel standby generator from Blue Star Power Systems. Volvo Penta TWD1644GE 16.1L inline-six with dual-stage turbo, DSE DCP7310 controller, 208-600V.
Tier 23-phasecommerciallarge-commercial
Blue Star Power Systems
Blue Star VD700-01
Open Basler controller + Volvo Penta engine + Stamford alternator — no proprietary lock-in. 700 kW class without OEM dealer dependency.
700 kW standby · Diesel · Liquid-cooled
700 kW diesel standby for industrial, data center, and mission-critical facilities where value engineering and non-proprietary components matter.
700 kW Tier 2 diesel standby generator from Blue Star Power Systems. Volvo Penta TWD1744GE 17.3L inline-six with Common Rail injection, DSE DCP7310 controller, 208-600V.
Tier 23-phaselarge-commercialhospital
Caterpillar
Cat 3412C
800 kW Cat diesel with 3412C V-12. Updated 3400-series with EMCP 4 controls. Proven reliability.
800 kW standby · Diesel · Liquid-cooled
800 kW standby for data centers, hospitals, and campuses with existing 3400-series fleet.
800 kW standby diesel generator with Cat 3412C V12 engine, 27.0L displacement. The current-generation 3412 with upgraded controls and improved fuel efficiency.
Tier 23-phasedata-centerhospital
Caterpillar
Cat 3508
850 kW Cat diesel with 3508 V-8. 34.5L between the 3412 and 3512. Proven 3500-series reliability.
850 kW standby · Diesel · Liquid-cooled
850 kW standby for industrial facilities, campuses, and mining operations with 3500-series standardization.
850 kW standby diesel generator with Cat 3508 V8 engine, 34.5L displacement. Purpose-built for industrial facilities, mining operations, and mission-critical power.
Tier 23-phaseindustrialcampus
Caterpillar
Cat 3508B
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 3516C
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 C15
500 kW diesel with CAT C15 ACERT inline-6. Best resale value in class. ~200 US dealers with deep parts inventory.
500 kW standby · Diesel · Liquid-cooled
500 kW diesel standby for hospitals, data centers, and large commercial with CAT fleet standardization.
500 kW diesel standby generator with Cat C15 ACERT engine. Large commercial standby for hospitals, high-rises, and municipal infrastructure.
Tier 23-phasehospitalhigh-rise
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 C27
800 kW diesel with CAT C27 V-12. Best resale -- retains 15-25% more than competitors. Paralleling-ready.
800 kW standby · Diesel · Liquid-cooled
800 kW diesel standby for mission-critical data centers, large hospitals, and industrial campuses.
