Generac SG150 vs Guascor G-18FR
The Generac SG150 and Guascor G-18FR are both natural gas generator engines in a similar power class. The Generac SG150 is the higher-output unit (188 kVA vs 178 kVA). Displacement is 8.8 L versus 18 L. The table below compares their full specifications side by side.
| Specification | Generac SG150 | Guascor G-18FR |
|---|---|---|
| Headline rating | 188 kVA | 178 kVA |
| Standby (50 Hz) | — | — |
| Prime (50 Hz) | — | 142 kWe |
| Standby (60 Hz) | 150 kWe | — |
| Prime (60 Hz) | — | 171 kWe |
| Displacement | 8.8 L | 18 L |
| Configuration | V8 | L6 |
| Cylinders | 8 | 6 |
| Rated speed | 1,800 RPM | 1,500 / 1,800 RPM |
| Fuel | Natural Gas | Natural Gas |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Stationary | Unregulated |
| Dry weight | — | — |
| Origin | United States | Spain |
Choosing between Generac SG150 and Guascor G-18FR
Use this comparison as an engineering shortlist, then confirm the complete generator package against load profile, voltage, 50/60 Hz frequency, duty class, emissions rules, cooling margin, altitude, ambient temperature, enclosure design, controller features, and alternator sizing. The Generac SG150 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.