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From natural gas-fueled combined heat and power (CHP) systems and emergency power for facilities, to renewable biogas energy to support the local grid, or electricity generated from coal mine gases, Caterpillar has a wide range of reliable gas power solutions.

Gas Generator Sets Specification

Maximum Continuous Rating 1515 ekW 1515 ekW Less
Fuel Type Natural Gas Natural Gas Less
Maximum Electrical Efficiency 44.90% 44.90% Less
Maximum Standby Rating 1515 eKw 1515 eKw Less
Frequency 50Hz 50Hz Less
RPM 1500rpm 1500rpm Less

Engine Specifications

Aspiration TA TA Less
Bore 6.7 in 170.0 mm Less
Displacement 3574.0 in³ 59.0 l Less
Engine Model G3512H G3512H Less
Stroke 8.5 in 215.0 mm Less

Generator Set Dimensions

Length 218.0 in 5536.0 mm Less
Width 77.0 in 1952.0 mm Less
Height 91.0 in 2308.0 mm Less
Dry Weight - Genset 31085.0 lb 14100.0 kg Less


Meets most worldwide emissions requirements down to 0.5 g/bhp-hr Nox level without aftertreatment

Full Range of Attachments

Wide range of bolt-on system expansion attachments, factory designed and tested Flexible packaging options for easy and cost effective installation

World Wide Product Support

Cat dealers provide extensive post-sale support including maintenance and repair agreements. Cat dealers have over 1,800 dealer branch stores operating in 200 countries. The Caterpillar S•O•S℠ program cost effectively detects internal engine component condition, even the presence of unwanted fluids and combustion by-products

Cat SR4B Generator

Designed to match performance and output characteristics of Caterpillar gas engines. Industry leading mechanical and electrical design. High efficiency

Cat EMCP4 Control Panel

The EMCP controller features the reliability and durability you have come to expect from your Cat equipment. EMCP4 is a scalable control platform designed to ensure reliable generator set operation, providing extensive information about power output and engine operation. EMCP4 systems can be further customized to meet your needs through programming and expansion modules.

G3512H Standard Equipment

Air Inlet
  • Package Mounted Air Cleaner with service indicator

Control Panels
  • EMCP 4.3 Genset Controller
  • Dedicated customer wiring terminals

  • Engine driven water pumps for jacket water and after cooler

  • Center section cooled turbocharger with Cat flanged outlet

Fuel system
  • Basic pressure and regulation and filtration

  • High efficiency low voltage Cat generator, permanent magnet excitation, digital regulation, IP23 water ingress protection, & form wound construction.

  • Electric Starter

  • Paint - Caterpillar Yellow except rails and radiators gloss black
  • Crankshaft vibration damper and guard
  • Operation and maintenance manuals
  • Parts book

G3512H Optional Equipment

Air Inlet
  • Heavy Duty air cleaner with precleaner

Control Panels
  • Remote monitoring software

  • Electric jacket water and aftercooler pumps
  • Package mounted (<1000kW), horizontal, or remote radiators
  • Combined heat and power skid with heat exchangers, electric pumps, expansion tank, controls, and auxiliary oil resevior

  • Exhaust silencers, CO catalyst, NOx catalyst

Fuel System
  • NFPA37, EN746-2, CSA B149.1, AS 5601/3814 compiant fuel train including monitoring, safety shutoff devices, and flexible conduit

  • Medium and High Voltage Cat generator, Coastal Protection, Oversized, and Premium options