Reserve this item if you do not have a power source for your event. One generator can run up to 2 plug-ins. If, for example, you are renting a large obstacle course that requires 3 plug-ins, you will need to rent two generators. If you are unsure how many generators to rent, please contact our office at 651-882-6575. Generators come full of gas and will run approximately 7-8 hours before needing to be refueled.