Kohler KD Series Mission-Critical Generators
The Kohler KD series covers large diesel generators from about 800 kW to 4000 kW, engineered for mission-critical density and clean power with the KOHLER G-Drive engine, a skewed-stator alternator delivering low harmonic distortion, and UL 2200 and NFPA 110 compliance. The KD4000 is Kohler's flagship 4 MW single-engine unit. Comp-Utility specs, installs, and services KD series generators across Central Texas.
What We Provide
Our Capabilities
Generator Sizing and Spec
We size and specify KD units and paralleled arrays for mission-critical and hyperscale loads.
Learn moreInstallation and Commissioning
We install, integrate switchgear and ATS, and prove the system with load bank and transfer testing.
Learn moreMaintenance and Testing
We maintain and load-bank test KD units so they start and carry the load every time.
Learn moreClean, Dense Power
Low-Distortion Output From 800 kW to 4 MW
The KD series is engineered for mission-critical power, with a skewed-stator alternator that delivers low total harmonic distortion (under 3%) and high-ambient cooling capability, important for the Texas climate.
From the KD800 to the flagship 4 MW KD4000, Comp-Utility sizes, installs, commissions, and maintains KD generators and the paralleling and transfer equipment around them.
Key Specifications
| Model range | Approx. rating | Notes |
|---|---|---|
| KD800 to KD1750 | 800 to 1750 kW | KOHLER G-Drive, PMG, <3% THD |
| KD2000 to KD2800 | 2000 to 2800 kW | High-ambient cooling to 50C, paralleling |
| KD3250 / KD3500 | 3250 to 3500 kW | Tier 2 / Tier 4 Final variants |
| KD4000 | 4000 kW (5000 kVA standby) | Largest single-engine Kohler |
| Compliance | UL 2200, NFPA 110, ISO 8528 | Mission-critical configurations |
Specifications reflect the Kohler KD series; 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 is the Kohler KD series?
The Kohler KD series is a line of large diesel generators from about 800 kW to 4000 kW, built for mission-critical applications with the KOHLER G-Drive engine and a skewed-stator alternator that produces low harmonic distortion. It includes the flagship KD4000, Kohler's largest single-engine generator. The series targets data centers, healthcare, and large campuses.
What makes the KD series good for sensitive loads?
The KD series alternator uses a skewed stator that delivers low total harmonic distortion, under 3%, producing clean power well suited to sensitive electronic and IT loads. Combined with strong load acceptance and UL 2200 and NFPA 110 compliance, this makes the KD series a strong fit for mission-critical facilities. Comp-Utility verifies power quality during commissioning.
How large does the KD series scale?
The KD series scales from 800 kW up to the 4000 kW KD4000, Kohler's largest single-engine unit, and units can be paralleled for multi-megawatt arrays. This range covers mid-size facilities through hyperscale campuses. Comp-Utility sizes the units and array to your load and redundancy target.
Are KD generators suited to the Texas climate?
Yes. KD series units offer high-ambient cooling capability, rated for operation in high temperatures, which is important for reliable performance in the Central Texas heat. Comp-Utility specifies the cooling and configuration appropriate for local peak conditions so the generator performs when it is hottest.
What emissions tiers are available?
The KD series offers configurations including Tier 2 and Tier 4 Final variants on certain models, allowing you to meet the emissions requirements that apply to your site and permitting. Comp-Utility specifies the emissions configuration appropriate for your application and Texas air-quality requirements.
Can KD generators be paralleled?
Yes. KD series units support paralleling for capacity and redundancy, enabling multi-megawatt N+1 and larger arrays. Comp-Utility designs and integrates the paralleling switchgear and controls and verifies load sharing and transfer through integrated systems testing before the array carries critical load.
What maintenance does a KD generator require?
KD generators require regular oil, filter, and coolant service, fuel system and fuel quality management, 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 load criticality.
Who installs and services Kohler KD generators in Central Texas?
Comp-Utility specs, installs, commissions, and maintains Kohler KD series generators and the supporting switchgear and ATS across Central Texas, including load bank and transfer testing and 24/7 emergency response. Call (512) 346-0999 or email sales@comp-utility.com.