6VSG Kohler Home Generator 6 Kw

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6 kW Generator
6VSG SINGLE PHASE, Natural Gas (NG) / Propane (LP)


The generator made for renewable energy, including solar power or other remote applications. The KOHLER 6VSG battery-charging generator efficiently charges battery banks when renewable energy sources can’t keep up with demand. If your battery charge drops below a pre-set level, the 6VSG charges it automatically.

  • High-quality power.

    The 6VSG provides consistent power to charge battery banks used with renewable energy, telecom and other remote applications.
  • Economical.

    The 6VSG is fueled by clean, affordable natural gas or liquid propane (LPG).
  • Remote control.

    Add the Programmable Interface Module and OnCue® Generator Management System to communicate with the 6VSG remotely.
  • Automatic.

    The generator senses when the battery bank is running low and turns on automatically to keep up with demand.


  • Designed specifically for efficient charging of battery banks for renewable energy, telecom and other remote applications; provides consistent direct-current output to maintain battery banks directly without inefficient conversions from alternating current
  • Can be used for industrial battery bus support to reduce the size of battery banks
  • Generator can maintain batteries directly without an expensive converter or monitoring equipment
  • Longer engine life and reduced fuel consumption when compared to fixed speed; variable engine speed (2300-2900 RPM) reduces maintenance requirements and fuel consumption and extends the life of the engine
  • Powered by commercial-grade KOHLER Command PRO® engine
  • Accommodates most systems; compatible with positive- or negative-grounded systems in 24, 26 and 48 volt configurations
  • Compatible with optional OnCue® Generator Management System 3.1 or higher and Programmable Interface Monitor


  • Extremely quiet operation with sound at 62 dBA at 50% load
  • Steel enclosure with automotive-grade paint for advanced corrosion protection
  • Runs on either natural gas or liquid propane (LPG); simple switching between natural gas and LPG in the field
  • 5-year, 2000-hour warranty for on-grid applications
  • 18-month, 1000-hour warranty for off-grid application
  • Optional installed communications kit includes fuel-pressure switch and enclosure intrusion alarm

*Based on generator and load size.

  • High Quality DC Power 6 kW DC generator designed specifically for renewable energy applications and other remote applications. Provides consistent DC output to maintain battery banks directly without inefficient conversions from alternating current
  • Quiet and Economical Variable speed helps to keep noise low and reduce fuel consumption as compared to fixed-speed AC generators
  • Flexible Generator senses when battery bank is running low and automatically turns on to maintain batteries when renewable energy sources cannot keep up with demand
  • Reliable18-month/1000-hour warranty for off-grid applications or 5-year/2000-hour warranty for on-grid applications.

6VSG Kohler 6kW Variable Speed Direct Current Generator – 36 Volt DC | 6VSG-QS3
6VSG-QS1 Kohler 6kW Variable Speed Direct Current Generator with Oil Make Up Kit – 48 Volt DC | 6VSG-QS1


Rated kW LP

6 kW

Rated kW NG

6 kW

Amps LP

111 amps

Amps NG

111 amps

Alternator Note

All information shown is for 48 VDC nominal voltage.


725 cm3 (44 cu. in.)


NG 18.5 HP, LP 21.2 HP

Enclosure Material


Sound Output During Full-speed Operation

65 dB(A)


Premium five-year/2000-hour limited warranty for on-grid applications, 18-month/1000-hour for off-grid applications

Country of Origin




Automatic Transfer Switch Included


Remote Monitoring Available


Off Grid Warranty

18-month/1000-hour for off-grid applications

Off Grid / Utility Backup

Utility Backup|Off Grid


420 lbs.

Alternator Type

Brushless, Permanent-Magnet

Fuel Consumption on NG at 50% load?

75 cfh

Fuel Consumption on LP at 50% load?

32 cfh


VSC Controller

Cylinder Arrangement



1008 mm x 707 mm x 723 mm (39.7 in. x 27.8 in. x 28.5 in.)

Engine Manufacturer/Description


Engine Model


Engine/Alternator RPM


Fuel Type

Natural Gas (NG) / Propane (LP)


Variable Speed, Direct Current


Single Phase

Voltage @ 60 Hz


Digital Voltage Regulation


Built in Mounting Pad

Weight 470 lbs
Dimensions 45 × 35 × 34 in
Oil Make Up Kit



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