Cummins HSK78G Generator

HSK78G Gas Generator Series

Frequency (Hz) 50, 60
Certification Global Compliance
Fuel Type Lean-Burn Gas

The new HSK78 series offers a total package of gas generator capabilities and innovative gas technology for prime and peaking power applications. The HSK78G generator series has been designed from the skid up, providing reliable power no matter how extreme the fuel source or operating conditions.


Prime Power Cogeneration


This new series represents a bold step into the gas arena for Cummins, showcasing new technology in a new engine that pushes new levels of efficiency, transient performance and gas variation well beyond former natural gas generators.


Target Industries


Commercial & Institutional Utility Industrial
Airports Landfills Mining
Universities Waste Water Treatment Plants Manufacturing
Prison Bases Grid Firming Oil and Gas
Shopping Malls Anaerobic Digesters Greenhouses
  Independent Power Producers Agriculture


Wherever you are, Whatever your job, Cummins Expertise is Always On

Cummins offers customers unrivaled peace of mind when it comes to servicing and maintaining the HSK78G. Best-in-class aftermarket capabilities via your dedicated local contact, supported by a global system of service technicians, engineers and part distributions facilities in over 190 countries.


Cummins Infographic Map




  Genset Model C1600N5CD C1800N5CD C2000N5CD C1600N6CD C1800N6CD C2000N6CD
  Hz 50 50 50 60 60 60
Pipeline Natural Gas ISO Electrical Efficiency % 43.8 44.3 44.2 43.2 43.6 43.5
  ISO Thermal Efficiency % 47.7 46.8 45.9 47.3 46.3 45.4
  ISO Fuel Consumption Kw 3652 4066 4530 3707 4128 4599
  Usable Heat Kw 1740 1901 2077 1752 1912 2088
  Minimum Methane # 55 60 70 55 60 70
  Data Sheet D-6405 D-6401 D-6399 D-6417 D-6413 D-6409
Low BTU ISO Electrical Efficiency % 42.7 43.2 43.2 42.1 42.5 42.6
  Energy Content, BTU/scf 550 550 550 550 550 550

Dimensions (m) 
(L X W X H)

6.9 x 2.2 x 2.8 6.9 x 2.2 x 2.8 6.9 x 2.2 x 2.8 7.6 x 2.1 x 2.8 7.6 x 2.1 x 2.8 7.6 x 2.1 x 2.8
  Temperature Rise (Deg. C) 80 - 105 80 - 105 80 - 105 80 - 105 80 - 105 80 - 105
  NOx emissions
250-500 250-500 250-500 0.5-1.0


  Data Sheet D-6429 D-6425 D-6421      
Low MN              

* GCC only available on 50Hz

Generator Model kWe Hz Fuel Type Spec Sheet
C2000N5CD 2000 50 Lean-Burn Gas Spec-Sheet-HSK78G-50Hz_0.pdf
C1800N5CD 1800 50 Lean-Burn Gas Spec-Sheet-HSK78G-50Hz_1.pdf
C1600N5CD 1600 50 Lean-Burn Gas Spec-Sheet-HSK78G-50Hz_2.pdf
C2000N6CD 2000 60 Lean-Burn Gas Spec-Sheet-HSK78G-50Hz_3.pdf
C1800N6CD 1800 60 Lean-Burn Gas Spec-Sheet-HSK78G-50Hz_4.pdf
C1600N6CD 1600 60 Lean-Burn Gas Spec-Sheet-HSK78G-50Hz_5.pdf

Peak Electrical Efficiency

  • Up to 44.2 percent (50 Hz) and 43.5 percent (60 Hz), meeting ISO standards*
  • Operates on a wider range of pipeline natural gas down to 70MN without impacting power output
  • Automatic engine adjustments account for fuel quality changes and quick load-step performance - all without the need to calibrate or switch off the engine
  • More stability, greater uptime and lower fuel costs lead to lower total cost of ownership

Game-Changing Fuel Flexibility

  • High power density down to 40MN fuels
  • Powered by a wide range of low-cost and free fuel sources that would otherwise be considered waste products
  • New models manage low-BTU fuels more efficiently, delivering robust power with aggressive fuels down to very aggressive contaminant levels with less derating
  • No space required for gas-cleaning systems
  • Lower capital and operating expenses

Extreme Dependability

Full power capability up to 40oC (104F) with standard turbo offering and up to blistering 55oC (131F) with high ambient turbo offering accommodates the site’s environment, including its temperature, atmospheric and ground conditions

Market-Leading Combined Heat & Power Functions

Market-leading thermal efficiency at 47.1% and 2110 kW of thermal output for heating, cooling and steam generation provides significant environmental benefits by recovering CO2 and takes up less space, offering greater design flexibility

Industry Leading Service Cycles

  • Industry’s longest major overhaul service cycle of 80,000 hours means high return on investment, keeping the operations and maintenance costs low
  • Sophisticated predictive diagnostics available driven by innovative tools such as onboard spark plug sensors, NOx sensors, and real-time trend data collection provide minimum downtime and optimized standard maintenance costs

Global Compliance

  • As low as 250 mg/Nm3 (0.5g/hp-hr) NOx without aftertreatment
  • 30% load step at G1 with four steps to load providing superior load pickup and load rejection transient capabilities

60Hz Compliance


  • NSPS Compliant Capable
  • UL Certified and Marked
    • UL2200
  • Compliant with:
    • Electrical Code, NFPA 70
    • Fuel Code, NFPA 37
    • Standby Code, NFPA 110 Level and Type TBD


  • CSA Certified and Marked
    • CSA C22.2 No. 14 and No. 100
  • Compliant with:
    • Electrical Code, CSA C22.1
    • Fuel Code, CSA B149
    • Standby Code, CSA C282 and CSA Z32

50Hz Compliance


  • Compliant with:
    • Electrical Code, AS/NZS 3000
    • Fuel Code, AS/NZS 3814
    • Standby Code, AS/NZS 3009

EU and Asia

  • CE Marked
  • EU Grid Code Compliant and Certified


  • EAC Marked - Russian Customs Union



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