Generac
Generac SG250
SG Series
Generac SG250 14.2 L inline-6 turbocharged and aftercooled spark-ignited natural-gas generator engine. Generac publishes 375 hp standby and 337 hp prime at 1800 RPM, producing 250 kWe standby and 225 kWe prime.
- Standby Power · 60 Hz
- 313 kVA
- Electrical Output
- 250 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 | 251 | 225 | 281 |
| Standby Power | 280 | 250 | 313 |
Generac SG250 generator set context
The Generac SG250 is listed here as a natural gas generator-drive engine for 60 Hz generator sets, with a headline 313 kVA / 250 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 | SG250 |
| 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 SG250?
The Generac SG250 is rated at 313 kVA standby / 281 kVA prime at 60 Hz (1,800 rpm).
Does the SG250 run at 50 Hz or 60 Hz?
The Generac SG250 is rated for 60 Hz (1,800 rpm).
What fuel does the Generac SG250 use?
The Generac SG250 is a Natural Gas generator-set engine.
What is the displacement and cylinder configuration of the SG250?
The Generac SG250 is an inline-6 (6-cylinder) engine with a displacement of 14.2 L.
What emissions standard does the SG250 meet?
The Generac SG250 is certified to U.S. EPA Stationary emissions standards.
Is the Generac SG250 still in production?
Yes — the Generac SG250 is a current production model.
Is a datasheet available for the SG250?
Yes — an official Generac datasheet for the Generac SG250 can be downloaded from this page.
Related Engines
Compare Generac SG250
Reference
- Canonical page
- /engines/generac-sg250
- Last database update
- 2026-07-25
- Manufacturer files
- 1 datasheet linked
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