Generator Brands We Sell & Service
PowerGen sells, installs, and services generators from 19+ manufacturers. Our factory-trained technicians know these machines inside and out — here's how we think about each brand.
Brands We Sell
Our recommendationsThese are the brands we actively recommend, sell, and install. Our technicians are factory-trained and our parts inventory is stocked for same-day service.
Kohler
119 models in catalog
Best power quality in class — THD below 3%, quietest enclosures, the healthcare and mission-critical default
Kohler is our primary recommendation for commercial standby power. We sell and service the full Kohler line — RCA residential, RCL light commercial, KG industrial diesel, and REOZ large-frame — and our technicians are factory-trained on every product family..
Best for
Hospitals, data centers, noise-sensitive commercial sites, facilities with sensitive electronics, and buyers who prioritize power quality and total cost of ownership over purchase price.
MQ Power
17 models in catalog
WhisperWatt — the quietest portable generators in the industry, rental-fleet proven, manufactured by Denyo (Japan)
MQ Power is our go-to recommendation for portable diesel generators. The WhisperWatt line is the industry standard for quiet temporary power — if you need a portable diesel for construction, events, or emergency deployment, this is what we spec..
Best for
Construction sites, film and event production, emergency temporary power.
Gillette
50 models in catalog
Factory-direct pricing with non-proprietary OEM components — same engines and controllers as the majors, 15-30% less
When budget and lead time matter for industrial diesel standby, we recommend Gillette. Same John Deere and Volvo engines as the major brands, same UL-2200 certification, same Deep Sea Electronics controllers — at 15-30% less, with 3-7 day lead times that the big OEMs can't touch..
Best for
Cost-conscious commercial and institutional buyers, municipal and wastewater applications, military (Buy American compliance), and buyers who value component independence over brand prestige.
Triton Power
128 models in catalog
Largest independent generator manufacturer in the Americas — proven OEM engines at value pricing, 10 kW to 2,000 kW diesel and 40 kW to 1,000 kW natural gas
Triton Power is our value brand for mobile and portable diesel generators, and an emerging option for industrial standby. When MQ Power's pricing is a stretch or lead times are too long, Triton delivers comparable capability at a lower price point with faster availability..
Best for
Cost-conscious commercial or industrial buyers needing reliable diesel backup or prime power in the 50-500 kW range, rental fleet operators building inventory at lower capital cost than Cat or Cummins equivalents, and projects with non-standard configuration requirements.
All Brands We Service
We maintain and repair generators from every major manufacturer. If you have an existing unit from any of these brands, our technicians can service it.
Cummins
94 models in catalog
Full vertical integration — engine, alternator, controls, and transfer switch from one manufacturer. One throat to choke.
Best for
200-1,500 kW commercial and mission-critical applications, cold-climate installations, and buyers who want single-source accountability with no finger-pointing between engine, alternator, and controls vendors.
Caterpillar
64 models in catalog
Premium industrial power — best resale value, deepest parts network in the industry
Best for
Heavy industrial sites, large-frame applications (500 kW+), buyers who treat generators as capital assets with resale value, and rural or secondary markets where dealer density matters.
Generac
81 models in catalog
Volume leader — best price, fastest availability, largest dealer network in the industry
Best for
Budget-conscious light commercial applications (20-150 kW), buyers with existing Generac dealer relationships, and low-duty applications running less than 100 hours per year.
Blue Star
105 models in catalog
Open-architecture controllers and multi-OEM components — serviceable by anyone, now backed by DEUTZ AG
Best for
Service-savvy buyers who hate proprietary lock-in, custom configuration requirements, value engineering projects, and independent dealers wanting OEM-agnostic equipment.
MTU
28 models in catalog
Data center specialist — Rolls-Royce engineering, best fuel efficiency, highest power density in class
Best for
Hyperscale data centers (1 MW+), high-duty-cycle applications running 2,000+ hours per year, space-constrained footprints, and long-term asset holders who optimize on total cost of ownership.
Hipower Systems
129 models in catalog
Full vertical integration backed by Yanmar/Himoinsa — data center-grade features at 15-25% below the Big 4
Best for
Cost-conscious data centers and hospitals needing Big 4 specs at Tier 2 prices, rental fleets (HRVW mobile line), and California natural gas projects.
Echo
14 models in catalog
Patented SimulPhase technology — simultaneous single-phase and three-phase output from one unit. 50 years of Shindaiwa durability.
Best for
Mixed-load construction sites where SimulPhase eliminates transformer costs, rental fleets who value the Shindaiwa durability heritage, and film/event production.
Airman
16 models in catalog
0.001% warranty claim rate — arguably the most reliable portable diesel generator you can buy, with 110% fluid containment standard
Best for
Rental fleets buying on total cost of ownership, environmentally sensitive California sites where built-in containment is required, and ultra-high-reliability applications.
Atlas Copco
14 models in catalog
Swedish-engineered QAS series — 5-8 dB quieter than competitors, best fuel efficiency in the portable class
Best for
Rental fleets already in the Atlas Copco compressor ecosystem, noise-restricted urban construction, and events.
Doosan / Bobcat
13 models in catalog
80% of MQ Power quality at 70% of the price — rental-grade durability at non-premium pricing, now branded as Portable Power by Bobcat
Best for
Price-sensitive rental fleet purchases and construction temporary power where brand prestige does not influence the buying decision.
Winco
17 models in catalog
The PTO generator specialist — 100% US-made since 1927, Honda and Vanguard engines, tractor-driven power for agriculture
Best for
Midwest farms, spray foam and roofing contractors, and rural US applications.
Onan (Cummins)
5 models in catalog
Cummins residential power since 1920 — the RS series dominates home standby, commercial sets scale to 3,750 kW
Best for
Residential standby (13-30 kW) where brand trust and quiet operation matter, plus commercial applications inheriting Cummins' full engine lineup.
Olympian
6 models in catalog
Caterpillar's value-tier standby line — Perkins engines with Cat dealer service at 20-30% below Cat pricing
Best for
Budget-conscious commercial standby where access to the Cat dealer network matters but the full Cat price premium is unjustifiable.
SDMO (Kohler-SDMO)
6 models in catalog
Kohler's global genset brand — John Deere, Doosan, and Volvo engines in a multi-platform lineup from 6 to 3,300 kW
Best for
International projects, multi-engine standardization, and buyers wanting Kohler service access without the Kohler premium.
Waukesha (INNIO)
3 models in catalog
Natural gas prime power and CHP specialist — VHP Series engines for industrial continuous-duty applications since the 1960s
Best for
Industrial prime power, combined heat & power (CHP), landfill gas-to-energy, biogas, and distributed power.
Legacy Brands
These brands are discontinued but still widely encountered in the field. We maintain existing units and can advise on replacement options.
Detroit Diesel
4 models in catalog
Legacy two-stroke and Series 60 engines — discontinued but still heavily encountered in the field service fleet
Best for
Field service and maintenance of existing Detroit Diesel generator fleet.
Katolight
Legacy industrial standby brand — John Deere, Cummins, and MTU powered sets, now succeeded by Blue Star (DEUTZ)
Best for
Maintenance of existing Katolight fleet.
Not sure which brand is right? Our application engineers will recommend the best generator for your facility based on your power requirements, budget, and service preferences — not brand loyalty.
Get a free, no-obligation quote with brand recommendations tailored to your application.