Generac SG625 vs Guascor G-36SL
The Generac SG625 and Guascor G-36SL are both natural gas generator engines in a similar power class. Both are rated at roughly 771 kVA. Displacement is 33.9 L versus 35.9 L. The table below compares their full specifications side by side.
| Specification | Generac SG625 | Guascor G-36SL |
|---|---|---|
| Headline rating | 781 kVA | 761 kVA |
| Standby (50 Hz) | — | — |
| Prime (50 Hz) | — | 609 kWe |
| Standby (60 Hz) | 625 kWe | — |
| Prime (60 Hz) | — | 678 kWe |
| Displacement | 33.9 L | 35.9 L |
| Configuration | V12 | V12 |
| Cylinders | 12 | 12 |
| 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 SG625 and Guascor G-36SL
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 SG625 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.