Manufacturer-documented fuel consumption for 37 25–30 kW Diesel generator sets — median 1.95 gal/h at full load, 1.08 gal/h at half load.
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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 37 models with manufacturer data, full-load consumption runs 0.45–2.67 gal/h (median 1.95); at 50% load the median is 1.08 gal/h.
At 50% load, documented tank sizes give 10.9–81.9 hours (median 38.8 h) across 9 models.