Caterpillar · Cat CG Series (Gas)

Cat CG132B-16

800 kW standby · Natural Gas · Liquid-cooled

800 kW continuous-duty natural gas generator set. CG132B 16-cylinder engine for cogeneration, district energy, combined heat and power, and industrial prime power.

Standby power
800 kW / 800 kW prime
Voltage options
277/480V, 346/600V, 4160V
Frequency / Phase
60 Hz · 3-phase
Engine
Caterpillar CG132B-16
EPA / Emissions
EPA Stationary Spark Ignition
cogenerationcombined-heat-powercontinuousprimeManufacturingdistrict-energy
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Overview#

The Cat CG132B-16 is the top-of-range 800 kW variant in the CG132B product family, using 16 cylinders in a V16 configuration to deliver the maximum output from the CG132B cylinder module. At 800 kW continuous duty, this unit bridges the gap between mid-range industrial gas generators and the larger MW-class machines in the CG260 series.

The 4160V medium-voltage output option makes the CG132B-16 particularly useful for facilities with existing medium-voltage distribution infrastructure. Eliminating the step-up transformer reduces installation cost, footprint, and transformer losses.

District energy and large-scale CHP#

The 800 kW scale positions the CG132B-16 as a central plant unit for district energy systems serving multiple buildings, industrial process plants, and large healthcare or university campuses. At this scale, multiple CG132B-16 units can be installed in parallel to achieve N+1 redundancy while maintaining continuous-duty operation across the array.

CHP integration at 800 kW produces substantial recoverable thermal energy. For district heating applications, jacket water heat recovery alone can supply significant hot water or low-pressure steam loads. Combined with exhaust heat recovery, total fuel utilization approaching 80% is achievable on well-matched loads.

Fuel flexibility#

The CG132B-16 operates on:

  • Pipeline natural gas -- full 800 kW continuous output
  • Biogas -- landfill gas and anaerobic digester gas with appropriate fuel conditioning
  • Hydrogen blends -- up to approximately 25% H2 by volume for decarbonization roadmaps
  • Low-BTU gas -- subject to engineering review and application-specific derating

Industrial-grade reliability#

The CG132B platform is designed for tens of thousands of hours between major overhauls in continuous-duty industrial service. For central plant applications where uptime is directly tied to facility operations, the extended overhaul interval and Cat's global parts and service network are key selection criteria.

Our service experience#

800 kW continuous-duty gas engines are central plant assets requiring structured asset management. We recommend establishing a formal maintenance program including oil analysis at every oil change, cylinder pressure trending, and vibration baseline measurements at commissioning. Medium-voltage installations (4160V) require coordination with qualified electrical contractors for switchgear, metering, and utility interconnect -- plan this scope early in the project timeline.

Engineering specifications

Physical

Length
220 in
Width
68 in
Height
88 in
Wet weight
16,500 lb

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Configure your Cat CG132B-16

Lock the enclosure, fuel system, transfer switch, and add-ons — we'll confirm pricing, availability, and lead time within one business day. Prefer a free-form quote? That option is still here.

Estimate runtime for the Cat CG132B-16

Adjust load percent and tank size to estimate runtime. Pre-filled with this model's spec where available.

Estimate runtime on this tank

Fuel demand at 75% load

8,400,000 BTU/hr8400.0 cf/min @ 1,000 BTU/cf

On utility natural gas the runtime is generally unlimited provided the supply line and meter can deliver this BTU/hr at the engine's required inlet pressure (typically 5–14" WC residential, up to 5 psi commercial). Confirm against the OEM's published fuel-pressure spec.

Service intervals

Manufacturer-recommended intervals for the Cat CG132B-16 under standby duty. Field intervals may differ based on load profile, ambient conditions, and fuel quality.

Oil & filter
Every 2000 hours or 6 months
Coolant change
Every 8000 hours
Air filter
Every 2000 hours
Major overhaul
60,000 hours

Common failure modes

What we've seen fail on this platform. Use as a service-planning reference, not a diagnostic — actual failure modes depend heavily on duty cycle and maintenance history.

ComponentSymptomTypical hoursSeverity
Spark plugsMisfiring, derating, increased emissions4,000+moderate
PrechamberCombustion instability, detonation16,000+moderate
TurbochargerReduced power, bearing wear30,000+moderate
Ignition coilsCylinder misfiring8,000+minor

Frequently Asked Questions

What is the power rating of the Cat CG132B-16?
The Cat CG132B-16 is rated at 800 kW continuous/prime on natural gas at 60 Hz, 3-phase. This is the highest cylinder count in the CG132B range, using 16 cylinders in a V16 configuration to reach the top of the CG132B platform's output range. It is a continuous-duty rating suitable for unlimited-hour cogeneration and industrial prime power operation.
Does the CG132B-16 offer medium-voltage output?
Yes. The CG132B-16 is available in a 4160V configuration in addition to 480V and 600V options. Medium-voltage output at 4160V eliminates step-up transformer requirements in facilities that distribute power at 4.16 kV -- common in large industrial plants, district energy central plants, and campuses with medium-voltage distribution infrastructure.
What is the thermal recovery potential of the CG132B-16 in a CHP system?
The 800 kW CG132B-16 produces recoverable thermal energy from both jacket water cooling and exhaust gases. In a well-designed CHP system, total fuel utilization can reach 70-80% of input. Actual thermal recovery depends on the heat exchanger configuration, distribution losses, and seasonal thermal load profile. Cat offers factory-integrated heat recovery options for jacket water systems.

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