Mesa GX12 vs Mesa GX22
Compare Mesa GX12 and Mesa GX22 by recorded output, operating duty, frequency and engine specifications. Their listed displacements are 11.1 L and 21.9 L, respectively. Start with the same duty and frequency, then check each model’s source and package conditions. These records alone do not establish interchangeability.
| Specification | Mesa GX12 | Mesa GX22 |
|---|---|---|
| Standby electrical (50 Hz) | Not listed | 478 kWe |
| Prime electrical (50 Hz) | Not listed | Not listed |
| Standby electrical (60 Hz) | Not listed | 540 kWe |
| Prime electrical (60 Hz) | Not listed | 491 kWe |
| Other recorded mechanical power (duty unspecified) | 294 kW | 612 kW |
| Displacement | 11.1 L | 21.9 L |
| Configuration | L6 | V12 |
| Cylinders | 6 | 12 |
| Recorded engine speed | 1,800 RPM | 1,800 RPM |
| Fuel | Natural Gas | Natural Gas |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Recorded emissions classification | U.S. EPA Stationary | U.S. EPA Stationary |
| Dry weight | Not listed | Not listed |
| Origin | South Korea / United States | United States |
Compare matching ratings
Read across a row to compare the same operating duty and frequency. kWe is electrical output; mechanical kW is power at the engine shaft. kVA is apparent electrical power and is shown only when kWe is missing, without converting it. “Not listed” means the record lacks that rating, not zero output. Continuous and prime duties are kept separate. Check source documents, units and site conditions before comparing values.
An emissions classification in the catalog is not proof of certification for your engine or installation. Confirm the exact model, applicable documents and generator configuration.
Mesa GX12: Review the model record and available supporting documents
Mesa GX22: Review the model record and available supporting documents
Choosing between Mesa GX12 and Mesa GX22
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.