Our average of how long a generator ran, over various loads, on a full tank of gasoline or diesel fuel, a 20-pound tank for propane-based portables, or a 250-gallon propane tank for stationary models.

The average house will take at least 5,000 to 7,500 watts to run only the ... Though inverter-type generators are typically portable, we put them under their own heading because they are ...

The best portable generators ... This wattage varies from one generator to another, with smaller units delivering 1000 - 3000 watts, midsize models with 3000 - 5000 watts, and the largest machines ...

Portable generators can vary in terms of overall power output (measured in watt-hours (Wh)), from larger 5000-watt versions that can power larger appliances like refrigerators for 8-12 hours to ...