Manufacturer-documented fuel consumption for 17 15–20 kW Bi-Fuel (NG/LP) generator sets — median 2.76 gal/h at full load, 1.22 gal/h at half load.
Compare 15–20 kW Bi-Fuel (NG/LP) generator specs side-by-side →
| Model | kW | gal/h @ 50% | gal/h @ 100% | Tank (L) | Runtime @ 50% (h) |
|---|---|---|---|---|---|
| Generac EcoGen 15 kW | 15 | 1.48 | 2.86 | — | — |
| Generac EcoGen 6103 | 15 | 4.99 | 10.86 | — | — |
| Generac G007163-0 | 15 | 1.84 | 2.76 | — | — |
| Generac 7035 | 16 | 0.87 | 1.37 | — | — |
| Generac G007035 | 16 | 2.52 | 2.94 | — | — |
| Generac G007036 | 16 | 22.72 | 28.21 | — | — |
| Generac G007037 | 16 | 22.72 | 28.21 | — | — |
| Generac G007176-0 | 16 | 0.97 | 1.48 | — | — |
| Generac G007177-0 | 16 | 0.97 | 1.48 | — | — |
| Generac G007178-0 | 16 | 0.97 | 1.48 | — | — |
| Briggs & Stratton PP17 | 17 | 2.10 | 3.30 | — | — |
| Cummins/Onan RS17A | 17 | 40.68 | 60.23 | — | — |
| Generac Guardian Series 7077 | 17 | 0.63 | 0.94 | — | — |
| Winco PSS20B | 17 | — | 3.61 | — | — |
| Generac 7226 | 18 | 0.26 | 0.39 | — | — |
| Generac G007226-0 | 18 | 0.97 | 1.48 | — | — |
| Generac G007228-0 | 18 | 0.97 | 1.48 | — | — |
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 17 models with manufacturer data, full-load consumption runs 0.39–60.23 gal/h (median 2.76); at 50% load the median is 1.22 gal/h.