Caterpillar C-Series Diesel Generators (C15 to C32)
The Caterpillar C-series diesel generators, including the C15, C18, C27, and C32, cover roughly 320 to 1000+ kW for commercial buildings, healthcare, industrial sites, and mid-to-large critical loads. They use EMCP controls, support strong load acceptance, and offer HVO-capable and paralleling-ready options. Comp-Utility specs, installs, and services Caterpillar C-series generators across Central Texas.
What We Provide
Our Capabilities
Generator Sizing and Spec
We match the C15, C18, C27, or C32 to your load, runtime, and redundancy requirements.
Learn moreInstallation and Commissioning
We install, integrate the ATS, and prove the system with load bank and transfer testing.
Learn moreMaintenance and Testing
We maintain and test C-series units so they start and carry the load on demand.
Learn moreVersatile Mid-Range
Proven Diesel Power From 320 kW to 1 MW
The C-series spans the mid-range that fits most commercial, healthcare, and light-industrial standby needs, balancing footprint and power with Caterpillar reliability and EMCP controls.
Comp-Utility sizes, installs, and maintains C-series generators and the transfer and switchgear around them, delivering a complete, tested backup power system.
Key Specifications
| Model | Approx. rating | Role |
|---|---|---|
| Cat C15 / C18 | 320 to 600 kW | Heavy-duty mid-range standby/prime |
| Cat C27 / C32 | 800 to 1000+ kW | Large high-speed, parallel-ready |
| Controls | EMCP 4 | Protection, metering, connectivity |
| Options | IVR regulator, HVO-capable, 10-sec start | Mission-critical configurations |
| Typical applications | Commercial, healthcare, industrial | Mid-to-large critical loads |
Specifications reflect the Caterpillar C-series platform; exact ratings, models, and options vary. Contact us to confirm the current configuration for your project.
The Comp-Utility Difference
Why Comp-Utility?
Long-Standing Distribution Partner
As a long-standing distribution partner of Eaton, Schneider Electric, and Vertiv, we specify best-in-class systems and back them with factory-grade service.
Engineer-Owned and Operated
Comp-Utility is owned and operated by engineers, with licensed Texas Professional Engineers (P.E.) on staff. That rigor anchors every design, specification, and installation.
24/7 Emergency Response and Preventative Maintenance
Our technicians provide preventative maintenance programs and 24/7 emergency response, with rapid on-site dispatch across Central Texas when facilities need us most.
Turnkey, Single-Contract Partner
We sell, design, install, and maintain complete infrastructure end to end. One accountable team and one contract for power, cooling, distribution, and cabling.
Licensed, Certified & Recognized
We hold ourselves to the standards of the institutions we serve, from professional licensure and jobsite safety to the industry organizations that set the bar for mission-critical work.
Licensed Professional Engineers
State of Texas (TBPE)
OSHA 30 Certified
Field Technicians
AFCOM Member
Data center industry association
7x24 Exchange Member
Mission-critical infrastructure
Frequently Asked Questions
What does the Caterpillar C-series cover?
The Cat C-series diesel generators span roughly 320 to 1000+ kW, including the C15 and C18 in the mid-range and the larger C27 and C32. They serve commercial buildings, healthcare, light industry, and mid-to-large critical loads, balancing footprint and power with Caterpillar reliability and EMCP 4 controls.
How do I choose between the C15, C18, C27, and C32?
Selection is based on your load in kW, including starting loads, plus runtime and redundancy needs. The C15 and C18 cover roughly 320 to 600 kW, while the C27 and C32 reach 800 to 1000+ kW. Comp-Utility's engineers model your running and starting loads and recommend the model and configuration that fit.
Are C-series generators suitable for data centers?
Yes, for smaller and mid-size data centers and critical rooms, the C-series provides reliable standby power, and units can be paralleled for capacity and redundancy. For large hyperscale N+1 arrays, the 2 MW-class 3516 is more common. Comp-Utility recommends the right platform based on your total load and redundancy target.
Can C-series generators run on renewable diesel (HVO)?
Yes. C-series platforms are HVO-capable, supporting renewable hydrotreated vegetable oil fuel where you want to reduce lifecycle emissions. Comp-Utility specifies the fuel and emissions configuration appropriate to your goals and to Texas air-quality permitting requirements.
What controls do C-series generators use?
The C-series uses Caterpillar EMCP 4 controls, which provide engine protection, metering, alarms, and connectivity for monitoring and integration with transfer and paralleling systems. Comp-Utility configures and tests the controls and integrates them with your ATS and any switchgear during commissioning.
Can C-series units be paralleled?
Yes. C27 and C32 units in particular are parallel-ready, and paralleling switchgear lets multiple generators share load and provide redundancy. This supports scalable, N+1 backup for growing facilities. Comp-Utility designs the paralleling scheme and verifies load sharing through commissioning.
What maintenance do C-series generators require?
They require regular oil, filter, and coolant service, fuel system maintenance, starting battery testing, controls verification, exercising, and periodic load bank testing, with NFPA 110 expectations for life-safety systems. Comp-Utility builds and executes a maintenance and testing program tailored to the unit and how critical the load is.
Who installs and services Caterpillar C-series generators in Central Texas?
Comp-Utility specs, installs, commissions, and maintains Caterpillar C-series generators and the supporting ATS and switchgear across Central Texas, including load bank and transfer testing and 24/7 emergency response. Call (512) 346-0999 or email sales@comp-utility.com.