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Generac 80kW Standby Generator | Liquid-Cooled Gaseous Engine |Model RG08045X

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Ensure your home or business remains powered during outages with the Generac Protector® Series Standby Generator, model RG08045X. Delivering a robust 80 kW output at 1800rpm, this generator provides essential circuit power protection, keeping all necessities operational. Its affordable price point offers protection at about half the cost of central air conditioning, making it a smart investment for reliable backup power.

SKU PCG-10080 Categories , ,


Robust Power for Large Homes and Commercial Applications 

The Generac Protector® Series 80kW Standby Generator, model RG08045X, is engineered to provide reliable and powerful backup power for large homes and commercial properties. Designed with advanced technology and built to last, this generator ensures your essential systems and appliances stay operational during power outages. 

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: Delivers superior power quality with less than 5% total harmonic distortion (THD), ensuring smooth operation for sensitive electronics and appliances. 
  • Generac’s Liquid-Cooled 4.5L 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: RG08045X 
  • Power Output: 80 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: 68 dB(A) at normal load, 64 dB(A) in Quiet-Test™ mode 
  • Engine: Generac Liquid-Cooled 4.5L Inline 4-Cylinder 
  • Battery Type: Group 27F, 725 CCA Minimum 
  • Fuel Usage: Natural Gas: 1,063 ft³/h (30.1 m³/h) at 100% load; Liquid Propane: 10.8 gal/h (40.9 L/h) at 100% load 
  • Max Continuous Amps (Single Phase): 333A 
  • Weight: 1,890 lbs (857 kg) 
  • Dimensions: 97.7 x 38 x 49 inches (248.2 x 96.5 x 124.5 cm) 

Ensure your home or business remains powered and operational during any power outage with the Generac Protector Series 80kW Standby Generator, model RG08045X. With advanced features, durable construction, and remote monitoring capabilities, this generator provides reliable backup power when you need it most. 

Choose the Generac RG08045X for unmatched power and peace of mind. 


Additional information

Weight 1890 lbs
Dimensions 100 × 38 × 49 in
Fuel Type

Liquid Propane or Natural Gas

Oil Type

Check chart in manual

Oil Capacity (qt)


Battery Included


Battery Type

Group 27F (48kW), 725 CCA

Battery Size


Engine Type

4-cyl In-line

Rated Synchronous rpm


Quiet Test


Controller Type





31 kW –


80 kW

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


Max. Cont. Amps (NG)


Sound Output in 7m - in Exercise Mode

68 db

NG Consumption - 50% (m3/hr)


NG Consumption - 100% (m3/hr)


LP Consumption - 50% (l/hr)


LP Consumption - 100% (l/hr)


LP Vapor Pressue (in. WC)

7 to 14

NG Pressure (in. WC)

3.5 to 14


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