Generac
Generac SG500
SG/MG
Generac SG500 — 25.8 L V12 spark-ignited natural-gas industrial generator engine (Generac gaseous SG/MG platform). 500–500 kWe standby across SG/MG ratings, 1800 rpm / 60 Hz.
Overhaul & repair parts- Manufacturer files
- 2 datasheets
- Last updated
- 2026-06-10
- Package route
- gas generator sets
- Standby Power · 60 Hz
- 625 kVA
- Electrical Output
- 500 kWe
- Cylinders
- V12
- Displacement
- 25.8 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 | — | 455 | 568.8 |
| Standby Power | — | 500 | 625 |
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Generac SG500 overhaul & repair parts
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Generac SG500 generator set context
The Generac SG500 is listed here as a natural gas generator-drive engine for 60 Hz generator sets, with a headline 625 kVA / 500 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.
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Technical Specifications
| Brand | Generac |
| Model | SG500 |
| Series | SG/MG |
| Configuration | V12 |
| Cylinders | 12 |
| Displacement | 25.8 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 SG500?
The Generac SG500 is rated at 625 kVA standby / 569 kVA prime at 60 Hz (1,800 rpm).
Does the SG500 run at 50 Hz or 60 Hz?
The Generac SG500 is rated for 60 Hz (1,800 rpm).
What fuel does the Generac SG500 use?
The Generac SG500 is a Natural Gas generator-set engine.
What is the displacement and cylinder configuration of the SG500?
The Generac SG500 is a V12 (12-cylinder) engine with a displacement of 25.8 L.
What is the catalog status of the Generac SG500?
The Generac SG500 is marked active in this database. Confirm current production and availability with the manufacturer; catalog status is not a live supply check.
Are reference documents available for the SG500?
This page links reference documents for the Generac SG500. Check each document's title, model coverage, revision and rating conditions before using it for selection.