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Generac 100kW Standby Generator | Liquid-Cooled Gaseous Engine SCAQMD Compliant |Model RG10090C

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Ensure your business remains operational during power outages with the Generac Standby Generator, model RG10045X, delivering an impressive 100kW at 1800rpm. This SCAQMD compliant generator provides robust power protection, making it an ideal choice for commercial applications where uninterrupted power is critical. Housed in a durable aluminum enclosure, this generator combines strength and efficiency, keeping your operations running smoothly and securely.

SKU PCG-10100 Categories , ,


The Generac Protector® Series 100kW Standby Generator, model RG10090C, is designed to provide robust and reliable backup power for large homes, commercial properties, and critical applications. Engineered with advanced technology and built to last, this generator ensures continuous power supply during outages, maintaining essential systems and operations without interruption. 

Key Features: 

  • Mobile Link™ Remote Monitoring: Monitor your generator’s status from anywhere in the world using a smartphone, tablet, or PC. Access real-time updates on operating status and maintenance alerts for complete peace of mind. 
  • True Power™ Technology: Provides superior power quality with less than 5% total harmonic distortion (THD), ensuring smooth operation for sensitive electronics and appliances. 
  • Generac’s Liquid-Cooled 8.86L Gaseous Engine: Purpose-built for generator use, this engine offers reliable power with minimal maintenance. Assembled in the USA with both domestic and foreign parts, it guarantees high performance and durability. 
  • Quiet-Test™ Self-Test Mode: Runs at a lower RPM during self-tests for quieter and more fuel-efficient operation. Schedule tests weekly, bi-weekly, or monthly to ensure your generator is always ready. 
  • Durable Aluminum Enclosure: The RhinoCoat™ powder-coated finish ensures the aluminum enclosure is corrosion-resistant and suitable for all weather conditions, providing long-lasting durability. 
  • User-Friendly Power Zone® 410 Controller: Features a 128 x 64 graphical display with a heater, multi-lingual support, and comprehensive system status updates. Monitor voltage, current, power, oil pressure, coolant temperature, and more. 
  • 5-Year Limited Warranty: Enjoy long-term reliability and support with Generac’s comprehensive warranty. 

Innovative Design and Rigorous Testing: 

  • Solid-State, Frequency Compensated Voltage Regulation: Provides fast response to changing load conditions and maximizes motor starting capability with ±1% voltage regulation. 
  • Full Pressure Lubrication System: Ensures pressurized lubrication to vital bearings, enhancing performance, reducing maintenance, and extending engine life. 

Additional Benefits: 

  • Quick and Smooth Starting: The electronic ignition/spark advance ensures reliable and fast starts every time. 
  • Engine Protection: Features such as low oil pressure and high temperature shutdown safeguard the engine from damage. 
  • Voltage Regulation: Prevents harmful voltage spikes with ±1% regulation. 
  • Compliant and Safe: Integral sediment trap meets IFGC and NFPA 54 installation requirements. 
  • Easy Installation: Flexible fuel line connector listed ANSI Z21.75/CSA 6.27 for convenient gas supply connection. 
  • Quiet Operation: The enclosed critical grade muffler minimizes noise and enhances safety. 
  • Compact Design: The small footprint and attractive design allow for installation as close as 18 inches from a structure, fitting seamlessly into any environment. 


  • Model: RG10090C 
  • Power Output: 100 kW 
  • Fuel Options: Natural Gas or Liquid Propane 
  • Voltage: 120/240V Single Phase, 208/120V 3-Phase, 240/120V 3-Phase, 480/277V 3-Phase 
  • Phase: Configurable for Single or 3-Phase 
  • Noise Level: 71 dB(A) at normal load 
  • Engine: Generac Liquid-Cooled 8.86L V8 
  • Battery Type: Group 31, 925 CCA Minimum 
  • Fuel Usage: Natural Gas: 1,148 ft³/h (32.5 m³/h) at 100% load; Liquid Propane: 360 ft³/h (10.2 m³/h) at 100% load 
  • Max Continuous Amps (Single Phase): 400A 
  • Weight: 2,848 lbs (1,292 kg) 
  • Dimensions: 110.6 x 39.5 x 69.3 inches (280.9 x 100.3 x 176.0 cm) 

Ensure your large home or commercial property remains powered and operational during any power outage with the Generac Protector Series 100kW Standby Generator, model RG10090C. With advanced features, durable construction, and remote monitoring capabilities, this generator provides reliable backup power when you need it most. 

Choose the Generac RG10090C for unmatched power and peace of mind. 

Additional information

Weight 2848 lbs
Dimensions 110.6 × 39.5 × 69.3 in
Fuel Type

Liquid Propane or Natural Gas

Oil Type

Check chart in manual

Oil Capacity (qt)


Battery Included


Battery Type

Group 31, 925 CCA

Battery Size


Engine Type

8-cyl V-type

Rated Engine Speed (RPM)


Quiet Test


Controller Type





32 kW –


96 kW

Max. Cont. Amps - 120/240 volts (LP)


Max. Cont. Amps (NG)


Sound Output 7 m in Normal Operation

71 db

NG Consumption - 50% (m3/hr)


NG Consumption - 100% (m3/hr)


LP Consumption - 50% (m3/hr)


LP Consumption - 100% (m3/hr)


LP Vapor Pressue (in. WC)

7 to 14

NG Pressure (in. WC)

3.5 to 14


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