Generac
Generac SG450
SG/MG
Generac SG450 — 21.9 L V12 spark-ignited natural-gas industrial generator engine (Generac gaseous SG/MG platform). 350–450 kWe standby across SG/MG ratings, 1800 rpm / 60 Hz.
- Manufacturer files
- 2 datasheets
- Last updated
- 2026-06-10
- Package route
- gas generator sets
- Standby Power · 60 Hz
- 563 kVA
- Electrical Output
- 450 kWe
- Cylinders
- V12
- Displacement
- 21.9 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 | — | 409 | 511.3 |
| Standby Power | — | 450 | 562.5 |
Generac SG450 generator set context
The Generac SG450 is listed here as a natural gas generator-drive engine for 60 Hz generator sets, with a headline 563 kVA / 450 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 | SG450 |
| Series | SG/MG |
| Configuration | V12 |
| Cylinders | 12 |
| Displacement | 21.9 L |
| Fuel Type | Natural Gas |
| Ignition Type | Spark Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | Unregulated |
| Country of Origin | United States |
Frequently asked questions
What is the power output of the Generac SG450?
The Generac SG450 is rated at 563 kVA standby / 511 kVA prime at 60 Hz (1,800 rpm).
Does the SG450 run at 50 Hz or 60 Hz?
The Generac SG450 is rated for 60 Hz (1,800 rpm).
What fuel does the Generac SG450 use?
The Generac SG450 is a Natural Gas generator-set engine.
What is the displacement and cylinder configuration of the SG450?
The Generac SG450 is a V12 (12-cylinder) engine with a displacement of 21.9 L.
Is the Generac SG450 still in production?
Yes — the Generac SG450 is a current production model.
Is a datasheet available for the SG450?
Yes — an official Generac datasheet for the Generac SG450 can be downloaded from this page.