The Generac Protector Series 150kW Standby Generator (Model RG15089 / RG150-Series) is engineered to deliver robust, utility-grade automatic backup power for large residential and commercial applications. Powered by a high-performance 9-liter turbocharged V-8 liquid-cooled engine operating at a low-speed 1,800 RPM, this unit ensures exceptional durability, lower operating temperatures, and extended engine life.
Designed for seamless integration into multi-phase electrical systems, it features True Power™ Technology, delivering clean electricity with less than 5% Total Harmonic Distortion (THD)—making it completely safe for sensitive electronics, appliances, and heavy-duty commercial loads. Housed in a heavy-duty, corrosion-resistant RhinoCoat™ aluminum enclosure, the generator is built to withstand harsh weather conditions while maintaining a compact footprint for its power class.
Key Features
- 150kW Continuous Standby Power Capacity
- Configurable 3-Phase Voltage Outputs (208V, 240V, and 480V options)
- Powerful 9.0-Liter Turbocharged V-8 Liquid-Cooled Engine
- 1,800 RPM Low-Speed Engine for Extended Life and Quieter Operation
- True Power™ Technology (Less than 5% THD for sensitive electronics)
- Quiet-Test™ Low-Speed Self-Test Mode for quiet weekly diagnostics
- Digital Evolution™ Controller with 2-line multilingual LCD display
- Wi-Fi Connectivity & Mobile Link™ Remote Monitoring Included
- Dual-Fuel Capability (Natural Gas or Liquid Propane vapor)
- Corrosion-Resistant RhinoCoat™ Powder-Coated Aluminum Enclosure
- Automatic Voltage Regulation (AVR) to 1%
- UL 2200 Listed Certification
- EPA and California Emissions Compliant (50-State Capable)
- Engineered and Built in the USA
- Standard 5-Year Limited Warranty
Specifications
| Brand | Generac |
|---|---|
| Series | Protector Series |
| Model / MPN | RG15089 (Series variant configuration) |
| Product Type | Commercial / Industrial Standby Generator |
| Rated Power Output | 150 kW (150,000 Watts) |
| Phase | 3-Phase (Configurable for 208V, 240V, or 480V) |
| Frequency | 60 Hz |
| Engine Brand | Generac Purpose-Built |
| Engine Displacement | 9.0 Liter Turbocharged V-8 |
| Engine Speed | 1,800 RPM |
| Cast Iron Sleeve | Yes |
| Cooling System | Liquid Cooled (with Radiator & Fan) |
| Fuel Type | Natural Gas (NG) or Liquid Propane (LP) Vapor |
| Total Harmonic Distortion (THD) | Less than 5% (True Power™ Technology) |
| Voltage Regulation | Automatic Digital Regulation to 1% |
| Frequency Regulation | Isochronous within 0.25% |
| Controller | Evolution™ Digital Controller (Multilingual LCD) |
| Enclosure Material | RhinoCoat™ Aluminum |
| Remote Monitoring | Mobile Link™ Wi-Fi Connectivity Standard |
| UL Listed | UL 2200 |
| Battery Requirement | 12-Volt, Group 31, 925 CCA |
| Warranty | Generac 5-Year Limited Consumer Warranty |
- Brand: Generac
- Product Code: RG15089
- Availability: In Stock