Generators under 100 kW serve residential, small office, retail, and light-commercial standby loads. The category spans residential air-cooled and liquid-cooled gas units, light commercial gas, and small portable diesels. Sizing is typically driven by the largest motor start (HVAC compressor, well pump, elevator) plus continuous panel load. Most units in this class accept 100–200 A automatic transfer switches.
236 models in this category.
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Only integrated diesel-battery hybrid portable generator on the market — LTO batteries, unlimited paralleling, dramatic fuel and emissions reduction.
22 kW standby · Diesel · Liquid-cooled
Noise-sensitive urban construction, events, and sites where fuel cost and emissions matter.
25 kVA hybrid energy system with 25 kWh LTO battery storage. Diesel-battery hybrid for reduced fuel and emissions.
3-phaseconstructionrental-fleet
Airman
Airman EBOSS 70-45
Only integrated diesel-battery hybrid portable generator on the market — LTO batteries, unlimited paralleling, dramatic fuel and emissions reduction.
60 kW standby · Diesel · Liquid-cooled
Noise-sensitive urban construction, events, and sites where fuel cost and emissions matter.
70 kVA hybrid energy system with 45 kWh LTO battery storage. Diesel-battery hybrid for reduced fuel and emissions.
3-phaseconstructionrental-fleet
Airman
Airman SDG13
0.001% warranty claim rate, 110% fluid containment standard, Kubota D1503 reliability — lowest total cost of ownership in the compact 10 kW portable class.
11 kW standby · Diesel · Liquid-cooled
Compact 10 kW portable for tight-access construction sites, overnight event power, and small commercial temporary loads where space and environmental compliance matter.
10 kW prime diesel portable generator. Ultra-compact Kubota-powered unit with 110% fluid containment and 27.7-hour runtime.
Tier 4 Final3-phaseconstructionrental-fleet
Airman
Airman SDG25
0.001% warranty claim rate, 110% fluid containment standard, 32-hr runtime — the longest in the 20 kW portable class. Isuzu turbo diesel with lowest total cost of ownership.
22 kW standby · Diesel · Liquid-cooled
Workhorse 20 kW portable for construction sites, film production, and event power where extended runtime and environmental compliance eliminate downtime and aftermarket add-ons.
20 kW prime diesel portable generator. Isuzu-powered with 32-hour runtime, 110% fluid containment, and switchable single/three-phase output.
Tier 4 Final3-phaseconstructionrental-fleet
Airman
Airman SDG25SV V-Pump
Industry-leading 0.001% warranty claim rate with 110% fluid containment standard — no separate secondary containment needed on CA sites.
22 kW standby · Diesel · Liquid-cooled
Rental fleets and construction sites requiring ultra-reliability and environmental compliance.
25 kVA (20 kW prime) portable diesel generator with integrated VFD for motor starting and dewatering.
Tier 4 Final3-phaseconstructionrental-fleet
Airman
Airman SDG40
0.001% warranty claim rate, 110% fluid containment standard, 37-hr runtime in the same footprint as the SDG25 — maximum power density with lowest total cost of ownership.
30 kW standby · Diesel · Liquid-cooled
Mid-range 29 kW portable for construction sites needing more power without a larger footprint. Ideal for commercial TI projects, utility work, and multi-day unattended temporary power.
28.6 kW prime diesel portable generator. Kubota-powered with 37-hour runtime at full load and 110% fluid containment standard.
Tier 4 Final3-phaseconstructionrental-fleet
Airman
Airman SDG45
0.001% warranty claim rate, 110% fluid containment standard, 28.75-hr runtime at 36 kW — premium Japanese precision at the sweet spot for mid-size commercial portable power.
39 kW standby · Diesel · Liquid-cooled
Mid-size 36 kW portable for commercial construction, large event power, and temporary building services where 20 kW is not enough and 50 kW is oversized.
36 kW prime diesel portable generator. Isuzu 4LE2X engine with 28.75-hour runtime and 110% fluid containment standard.
Tier 4 Final3-phaseconstructionrental-fleet
Airman
Airman SDG45SV V-Pump
Industry-leading 0.001% warranty claim rate with 110% fluid containment standard — no separate secondary containment needed on CA sites.
39 kW standby · Diesel · Liquid-cooled
Rental fleets and construction sites requiring ultra-reliability and environmental compliance.
45 kVA (36 kW prime) portable diesel generator with integrated VFD for motor starting and dewatering.
Tier 4 Final3-phaseconstructionrental-fleet
Airman
Airman SDG65
0.001% warranty claim rate, 110% fluid containment standard, 28.5-hr runtime at 51 kW — bridges the gap between compact towables and large trailer units with premium Isuzu reliability.
55 kW standby · Diesel · Liquid-cooled
Mid-size 51 kW portable for commercial construction, emergency standby, and event power where loads exceed 36 kW but a full-size 100 kW trailer is unnecessary.
51 kW prime diesel portable generator. Isuzu 4JJ1X engine with 28.5-hour runtime, 111-gallon tank, and 110% fluid containment.
Tier 4 Final3-phaseconstructionrental-fleet
Atlas Copco
Atlas Copco QAS 25
67 dBA — 5 dB quieter than peers, ±0.25% voltage regulation, 20% smaller footprint than previous gen
22 kW standby · Diesel · Liquid-cooled
Urban construction sites, film/event production, and noise-sensitive temporary power under 25 kW
20 kW prime diesel portable generator. Isuzu-powered QAS series with 67 dBA operation, Leroy Somer alternator, and 75-gallon tank.
Tier 4 Final3-phaseconstructionrental-fleet
Atlas Copco
Atlas Copco QAS 45
67 dBA — 5 dB quieter than peers, ±0.25% voltage regulation, 20% smaller footprint at 2,565 lbs
40 kW standby · Diesel · Liquid-cooled
Mid-range portable power for construction, rental fleets, and noise-sensitive urban job sites needing 35-40 kW
36 kW prime diesel portable generator. Isuzu 4LE2X engine with 67 dBA operation, Leroy Somer alternator, and 75-gallon tank.
Tier 4 Final3-phaseconstructionrental-fleet
Atlas Copco
Atlas Copco QAS 70
67 dBA — 5 dB quieter than peers, ±0.25% voltage regulation, 110-gal tank for 25+ hr runtime
60 kW standby · Diesel · Liquid-cooled
Mid-size portable power for construction, temporary power, and events needing 50-60 kW with low noise
56 kW prime diesel portable generator. Isuzu 4JJ1X engine with 67 dBA operation, Leroy Somer alternator, and 110-gallon tank.
Tier 4 Final3-phaseconstructionrental-fleet
Atlas Copco
Atlas Copco QAS 95
Swedish-engineered QAS series — 5-8 dB quieter than competitors with best fuel efficiency and runtime in class.
83 kW standby · Diesel · Liquid-cooled
Rental fleets in Atlas Copco compressor ecosystem, noise-restricted urban construction, and events.
95 kVA (76 kW prime) portable diesel generator. Swedish-engineered QAS series with John Deere engine.
Tier 4 Final3-phaseconstructionrental-fleet
Blue Star Power Systems
Blue Star GM50-03
Open Basler controller + PSI engine + Stamford alternator — no proprietary lock-in. Non-proprietary components serviceable by any qualified tech.
50 kW standby · Natural Gas / LPG · Liquid-cooled
50 kW natural gas standby for light commercial, retail, and small office buildings where gas-fueled backup and component independence matter.
50 kW natural gas / LP standby generator from Blue Star Power Systems. PSI 5.7L eight-cylinder naturally aspirated V8 engine, Stamford UCI224D alternator, DSE DCP7310 controller, 208-600V output.
Open Basler controller + PSI engine + Stamford alternator — prime-rated, no proprietary lock-in. Serviceable by any qualified tech.
60 kW standby · Natural Gas / LPG · Liquid-cooled
55 kW prime natural gas for continuous-duty commercial applications, cogeneration sites, and facilities needing 24/7 gas-fueled power.
55 kW prime / 60 kW standby natural gas / LP generator from Blue Star Power Systems. PSI 5.7L eight-cylinder V8 with catalyst/silencer, Stamford UCI224E alternator, DSE DCP7310 controller, 208-600V output.
Open Basler controller + John Deere engine + Stamford alternator — no proprietary lock-in. Serviceable by any qualified tech, not just the dealer.
30 kW standby · Diesel · Liquid-cooled
30 kW diesel standby for small commercial, retail, and light-duty applications where component independence and easy serviceability matter.
30 kW Tier 4 Interim diesel standby generator built by Blue Star Power Systems. John Deere 3029TFG89 engine, Stamford S1L2 alternator, DSE DCP7310 controller.
Tier 4 Interim3-phaselight-commercialsmall-office
Blue Star Power Systems
Blue Star JD40-03
Open Basler controller + John Deere 4045 engine + Stamford alternator — no proprietary lock-in. Serviceable by any qualified tech, not just the dealer.
40 kW standby · Diesel · Liquid-cooled
40 kW diesel standby for small commercial, retail, and light-duty facilities where component independence and value engineering matter.
40 kW Tier 3 diesel standby generator built by Blue Star Power Systems. John Deere 4045TF280 engine, Stamford UCI224 alternator, DSE DCP7310 controller.
Tier 33-phaselight-commercialsmall-office
Blue Star Power Systems
Blue Star JD40-05FT4
Open Basler controller + John Deere engine + Stamford alternator — no proprietary lock-in. Tier 4 Final compliant, serviceable by any qualified tech.
40 kW standby · Diesel · Liquid-cooled
40 kW Tier 4 Final diesel standby for small commercial and light-duty facilities requiring current emissions compliance.
40 kW Tier 4 Final diesel standby/prime generator from Blue Star Power Systems. John Deere 3029HG530 2.9L inline-three with DOC/DPF, DSE DCP7310 controller, 208-600V.
Tier 4 Final3-phasecommercialsmall-commercial
Blue Star Power Systems
Blue Star JD40-05FT4MP
Open Basler controller + John Deere engine + Stamford alternator — trailer-mounted, no proprietary lock-in. Serviceable by any qualified tech.
40 kW standby · Diesel · Liquid-cooled
40 kW Tier 4 Final mobile diesel for construction sites, emergency response, and temporary power where portability and clean emissions matter.
40 kW Tier 4 Final mobile trailer diesel generator built by Blue Star Power Systems. John Deere 3029HG530 three-cylinder engine, Stamford UCI224D alternator, DSE DCP7310 controller, 130-gallon integrated fuel tank.
Tier 4 Final3-phaseconstructiontemporary-power
Blue Star Power Systems
Blue Star JD50-03
Open Basler controller + John Deere 4045 engine + Stamford alternator — no proprietary lock-in. Serviceable by any qualified tech, not just the dealer.
50 kW standby · Diesel · Liquid-cooled
50 kW diesel standby for small commercial, retail, worship, and light-industrial sites prioritizing component independence over brand premium.
50 kW Tier 3 diesel standby generator built by Blue Star Power Systems. John Deere 4045TF280 engine, Stamford UCI224 alternator, DSE DCP7310 controller.
Tier 33-phaselight-commercialsmall-office
Blue Star Power Systems
Blue Star JD60-02
Open Basler controller + John Deere 4045 engine + Stamford alternator — no proprietary lock-in. Serviceable by any qualified tech, not just the dealer.
60 kW standby · Diesel · Liquid-cooled
60 kW diesel standby for light commercial, retail, multi-family, and telecom sites where value engineering and open-source components matter.
60 kW Tier 3 diesel standby generator built by Blue Star Power Systems. John Deere 4045TF280 engine, Stamford UCI224 alternator, DSE DCP7310 controller.
Tier 33-phaselight-commercialsmall-office
Blue Star Power Systems
Blue Star JD60-04FT4
Open Basler controller + John Deere engine + Stamford alternator — Tier 4 Final compliant, no proprietary lock-in. Serviceable by any qualified tech.
60 kW standby · Diesel · Liquid-cooled
60 kW Tier 4 Final diesel standby for commercial and light-industrial facilities requiring current emissions compliance and component independence.
60 kW Tier 4 Final diesel standby/prime generator from Blue Star Power Systems. John Deere 4045HFG04 4.5L inline-four with SCR/DOC, DSE DCP7310 controller, 208-600V.
Tier 4 Final3-phasecommercialsmall-commercial
Blue Star Power Systems
Blue Star JD60-04FT4MP
Open Basler controller + John Deere engine + Stamford alternator — trailer-mounted, no proprietary lock-in. Serviceable by any qualified tech.
60 kW standby · Diesel · Liquid-cooled
60 kW Tier 4 Final mobile diesel for construction sites, emergency response, and temporary power where portability and clean emissions matter.
60 kW Tier 4 Final mobile trailer diesel generator built by Blue Star Power Systems. John Deere 4045HFG04 four-cylinder engine, Stamford UCI224F alternator, DSE DCP7310 controller, 250-gallon integrated fuel tank.
