How long a portable generator can run depends mostly on its fuel capacity, how efficient it is and the load it's running. A portable generator with a 1 to 2-gallon fuel tank can usually last anywhere from 6–10 hours (50% load). For example, an 2000-watt generator with a 1 gallon tank will only run for about 8 hours to light small appliances or charge mobile devices.
Most of the larger portable generators, usually for home backup use, will have fuel tanks that run from 5-10 gallons. It will work for 10 – 20 hours at 50% load, which is a decent runtime. For example, a 5000-watt generator using around 0.75 gallons per hour could provide power for basic house appliances for up to nine hours on a seven-gallon tank. Making these calculations can help you determine how long your generator will run based on fuel consumption rate and load.
At the same time, efficiency takes hold. Most generatis being made today have economy mode which works by automatically idling the engine up and down depending on the load so you may run longer. That is because, for instance at 25% load, a generator will have much longer life than when it runs with its full capacity. They permit improved fuel use at the same time as maintaining performance when driving only rather low-demand devices.
And fuel type factors into run-time, too. The most typical kind of power generators are gasoline-powered ones, however diesel generators have shown to be extra effective in heavyweight applications. Diesel models can run for extended periods of time (around 20 hours) due to the greater energy-density of diesel fuel. Propane generators, for example, might need bigger tanks to run as long but will have a cleaner environmental impact and a longer shelf life.
Utilization and maintenance. — Another point of comparison is metadata; for more on that see this slide.annotate(); Maintenance personnel advise turning off generators every 12 or 24 hours for routine tasks such as refueling and checking oil levels. This will keep it from overheating and extending the life of the generator (which is between 2,000 to 3,000 hours). It may shorten the lifespan of the generator if it is left running non-stop without any intervals.
As Michael Liebreich famously said, "Energy is the golden thread that connects economic growth, social equity and an environment that allows the world to thrive. A portable generator with an adequate run time is crucial for longer power outages or outdoor use. A good generator even the small one works for a long time if used effectively.
Find Dabbsson's Portable Generators for portable solutions. Their models are made to provide energy for different applications keeping the right balance between power and efficiency.