Generac
Generac SG300
SG Series
Generac SG300 14.2 L inline-6 turbocharged and aftercooled spark-ignited natural-gas generator engine. Generac publishes 448 hp standby and 403 hp prime at 1800 RPM, producing 300 kWe standby and 270 kWe prime.
- Manufacturer files
- 2 datasheets
- Last updated
- 2026-07-25
- Package route
- gas generator sets
- Standby Power · 60 Hz
- 375 kVA
- Electrical Output
- 300 kWe
- Cylinders
- L6
- Displacement
- 14.2 L
- Rated Speed
- 1,800 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 301 | 270 | 337.5 |
| Standby Power | 334 | 300 | 375 |
Generac SG300 generator set context
The Generac SG300 is listed here as a natural gas generator-drive engine for 60 Hz generator sets, with a headline 375 kVA / 300 kWe / standby rating. Use this page to compare the published engine output, electrical kWe/kVA ratings, emissions level, datasheet availability, and neighboring models before specifying an alternator, controller, enclosure, voltage, and compliance package.
Also searched as
Technical Specifications
| Brand | Generac |
| Model | SG300 |
| Series | SG Series |
| Configuration | L6 Turbocharged Aftercooled |
| Cylinders | 6 |
| Displacement | 14.2 L |
| Fuel Type | Natural Gas |
| Ignition Type | Spark Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Stationary |
| Certifications | U.S. EPA Stationary Emergency, U.S. EPA Stationary Non-Emergency |
| Country of Origin | United States |
Frequently asked questions
What is the power output of the Generac SG300?
The Generac SG300 is rated at 375 kVA standby / 338 kVA prime at 60 Hz (1,800 rpm).
Does the SG300 run at 50 Hz or 60 Hz?
The Generac SG300 is rated for 60 Hz (1,800 rpm).
What fuel does the Generac SG300 use?
The Generac SG300 is a Natural Gas generator-set engine.
What is the displacement and cylinder configuration of the SG300?
The Generac SG300 is an inline-6 (6-cylinder) engine with a displacement of 14.2 L.
What emissions standard does the SG300 meet?
The Generac SG300 is certified to U.S. EPA Stationary emissions standards.
Is the Generac SG300 still in production?
Yes — the Generac SG300 is a current production model.
Is a datasheet available for the SG300?
Yes — an official Generac datasheet for the Generac SG300 can be downloaded from this page.