Manufacturer-documented fuel consumption for 13 25–30 kW Bi-Fuel (NG/LP) generator sets — median 2.10 gal/h at full load, 2.06 gal/h at half load.
Compare 25–30 kW Bi-Fuel (NG/LP) generator specs side-by-side →
| Model | kW | gal/h @ 50% | gal/h @ 100% | Tank (L) | Runtime @ 50% (h) |
|---|---|---|---|---|---|
| Cummins/Onan RS 25 | 25 | 2.10 | 3.50 | — | — |
| Generac QT025 | 25 | 2.13 | 3.91 | — | — |
| Generac QT02515 | 25 | — | 0.90 | — | — |
| Generac RG025 | 25 | 0.87 | 1.24 | — | — |
| Generac RG02515ANAX | 25 | — | 2.10 | — | — |
| Generac G0072100 | 26 | 0.97 | 1.48 | — | — |
| Generac G007290-0 | 26 | 2.06 | 3.63 | — | — |
| Generac G007291-0 | 26 | 2.06 | 3.63 | — | — |
| Generac QT027 | 27 | 2.06 | 3.43 | — | — |
| Generac QT02724 | 27 | — | 0.90 | — | — |
| Generac RG027 | 27 | 0.55 | 0.90 | — | — |
| Generac RG02724ANAX | 27 | — | 2.10 | — | — |
| SDMO G 40 | 27 | — | 3.28 | — | — |
Figures from each model’s own manufacturer documentation (spec sheets and manuals); runtime = documented tank capacity ÷ consumption at 50% load. Verify against the datasheet for your exact configuration.
Across 13 models with manufacturer data, full-load consumption runs 0.90–3.91 gal/h (median 2.10); at 50% load the median is 2.06 gal/h.