Diesel Generator Sets
Sixteen engine brands and three enclosure configurations, covering standby, prime and continuous duty. Open, silent or containerised.
Powering Your
Business Worldwide
When you need power, we get it to you efficiently. We design, assemble and factory-test reliable diesel generator sets for use in data centres, hospitals, industries, mines and marine.
10 kVA
to 4,125 kVA range
16
Engine brands
712
Generator models listed
-45°C
Cold-weather rating
Featured build 01
SPEC SHEET · PDF
Container Power Plants
CSC-certified · 10 / 20 / 30 / 40 / 45 ftGenerator, fuel, exhaust and switchgear integrated in one ISO footprint. Up to 45 ft per unit, parallel-ready, energised within days of arriving on site.
Featured build 02
SPEC SHEET · PDF
Silent Canopy Sets
10 – 4,125 kVA · 50 / 60 HzWeatherproof, powder-coated after galvanising, for hospitals, hotels and residential districts where a noise limit applies at the boundary.
Featured build 03
SPEC SHEET · PDF
Open-Type Sets
10 – 4,125 kVA · lowest cost per kVASkid-mounted with every service point on one side — the economic choice for plant rooms that already handle their own acoustics and ventilation.
Featured build 04
SPEC SHEET · PDF
Marine & Offshore
DNV survey support · auxiliary & harbour setsMarine auxiliary and harbour generator sets built to class rules, with offshore container packages for platform and vessel duty.
Power for sites that never close
Mines, ports, data halls and hospitals run around the clock — and so must the equipment that keeps them running. Cunmi sets are engineered for prime and continuous duty, not just the occasional outage: sized to your real load profile, rated for high ambient temperatures, and built to be serviced in the field with parts you can actually get.
Explore applicationsProduct Range
Four product lines, one manufacturing standard
Every set is assembled on the same line, load-tested to ISO 8528 and shipped with a factory test certificate.
Off-Shore Container
Containerised power plants built to the Container Safety Convention, with Marine C5 corrosion protection and stainless-steel external panels for platform, vessel and port duty.
Load Bank
Resistive and capacitive load banks for generator load testing, verifying output, voltage, frequency, cooling and protection systems for data centres and factories before delivery.
Natural Gas & LPG Generators
Efficient natural gas and LPG generator sets delivering reliable, lower-emission power for industrial, commercial and infrastructure applications.
Configuration
Open, silent or containerised
The same engine and alternator, packaged three ways. Start with the site constraint — noise, climate or schedule — and the package follows.
Land or sea, the same build standard
One assembly line and one test regime stand behind both product lines: land-based generator sets and offshore packages.
Power generation
Standby, prime and continuous-duty diesel sets from 10 kVA to 4,125 kVA, in open, silent or containerised form. Every rating is load-tested to ISO 8528 at 25, 50, 75 and 100 % before dispatch, and Stage V or EPA Tier 4 Final packages are available where emissions rules require them.
Explore generator setsMarine & offshore
Generator packages and offshore containers built for salt-laden air and deck transport: Marine C5 corrosion protection, stainless-steel external panels and Container Safety Convention certification, in 10, 20, 30, 40 and 45 ft footprints.
See offshore containers
Send us your load list. We’ll size the set to it.
Most generator trouble starts before the set is ever built — an oversized machine that never reaches working temperature, or an undersized one that lives at full load. Our engineers size every package from your load profile, altitude, ambient temperature and duty cycle, then prove it on the load bank before it leaves the works.
Solutions
Power engineered for your industry
Nine industries, nine different duty profiles. Each solution page documents the recommended configuration, the engineering rationale and a reference project.
Data Centers
Tier III / IV standby and N+1 redundant power
Explore solution
Healthcare
Uninterrupted power for critical care
Explore solution
Oil & Gas
Prime power for drilling, refining and field camps
Explore solution
Rental & Construction
Reliable site power that moves when you do
Explore solution
Manufacturing
Process power for manufacturing plants
Explore solution
Marine & Offshore
Marine-grade power for salt-laden air
Explore solution
Telecom
Compact, silent power for remote base stations
Explore solution
Commercial Buildings
Quiet, compact power for occupied buildings
Explore solution
Defense & Government
Mobile, self-contained power stations
Explore solutionWhy Cunmi
A manufacturing partner, not a trading desk
We own the assembly line, the load-test bay and the after-sales desk. That is what makes a delivery date meaningful.
Own factory
Assembly, paint and load-test capability under one roof — we build the set, we do not trade it.
Every set load-tested
Each genset runs a full load bank test at 25 %, 50 %, 75 % and 100 % before packing.
Certified to export
CE marked, with Stage III, Stage V and EPA Tier 4 Final emission lines and DNV survey support for oilfield duty.
Supported worldwide
Spare-parts hubs and trained partners in more than 50 countries.
Selected projects
Six project stories from recent deployments. Each card links to the full story — the brief, what we supplied and how the plant runs today.
Data centers
25 MW of standby for a data-centre campus
Fourteen containerised sets, one responsible supplier — the campus rides through grid loss without interrupting server load.
Oil & gas
Prime power where the grid does not reach
Five open-frame sets run continuously at a remote oilfield, serviced inside the planned shutdown window.
Telecom
150 telecom sites energised in one rollout
Silent sets from 10 to 50 kVA commissioned site by site to the operator’s own boundary noise limit.
Healthcare
Hospital standby tested against the real load
Changeover to backup proven against the hospital’s own load profile before handover — not against a lab figure.
Construction
Site power that moves with the build
Three 250 kVA sets have relocated twice between phases of a 20-month high-rise programme by crane lift.
Marine & offshore
Deck power that ships with the job
A C5-coated 200 kVA container set has run two offshore charters in salt air without a recorded fault.
Book a factory visit
Walk the assembly line in Fujian, watch a set run a full load-bank test at 25, 50, 75 and 100 %, and put your questions to the engineers who signed off the design. Visitors are welcome year-round — we will arrange the schedule around your trip.
Arrange a visitNews & insights
All articles
Quality · 14 Oct 2026
What a Four-Point Load Test Proves Before Shipping
Specification · 30 Sep 2026
Prime or Standby: Choosing a Duty Rating for 24/7 Power
Sizing · 16 Sep 2026
Oversizing a Generator: Where the Extra Money Goes
Product updates, commissioning case studies and technical notes from our engineering and after-sales teams.
Fuel your power with us
Engineers, welders, test technicians and export sales professionals — if you want your work to be measured in megawatts and decades, not sprints, we should talk.
We are hiring across assembly, quality, controls and after-sales in Fujian and Xiamen, and in our overseas parts hubs.
CareersNeed a reliable power solution?
Send us your load profile, ambient conditions and site constraints. A Cunmi sales engineer will come back within one business day with a sized recommendation and budget quotation.