6 kW Generator


  • Starting at $5348.00* MSRP
  • Model Number 6VSG
  • Fuel Type Natural Gas, LPG
  • Phase Single Phase
  • ATS Sold Separately
  • Remote Monitoring Included

*Starting price in US dollars. Does not include installation, automatic transfer switch or accessories or costs to export outside the US.


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, 36 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
  • Includes updated fuel regulator with an integral fuel selector switch.
*Based on generator and load size.
Model 6VSG
Rated kW LP 6 kW
Rated kW NG 6 kW
Amps LP 112 amps
Amps NG 112 amps
Alternator Note All information shown is for 48 VDC nominal voltage.
Displacement 725 cm³ (44 cu. in.)
Horsepower NG 18.5 HP, LP 21.2 HP
Enclosure Material Steel
Sound Output During Weekly Exercise 66 dB(A)
Sound Output During Full-speed Operation 66 dB(A)
Warranty Premium five-year/2000-hour limited warranty for on-grid applications, 18-month/1000-hour for off-grid applications
Country of Origin US
Certifications/Listings EPA,CSA
Automatic Transfer Switch Included Sold Separately
Remote Monitoring Available Included
Off Grid / Utility Backup Utility Backup,Off Grid
Weight 420 lbs. (191 kg)
Alternator Type Brushless, Permanent-Magnet
Fuel Consumption on NG at 50% load? 75 cfh
Fuel Consumption on LP at 50% load? 32 cfh
Controller VSC Controller
Cylinder Arrangement V-2
Dimensions 1010 mm x 710 mm x 725 mm (39.8 in. x 28 in. x 28.5 in.)
Engine Manufacturer/Description KOHLER
Engine Model CH740
Engine/Alternator RPM Variable Speed
Fuel Type Natural Gas,LPG
Frequency Variable Speed, Direct Current
Phase Single Phase
Voltage @ 60 Hz 24/48
Digital Voltage Regulation ±0.5%
Built in Mounting Pad No
**Warranty conditions only apply to North America.