No, it is not a requirement, but we prefer to dry camp and boondock, so for us a generator is a necessity. We can pretty much run most 120 VAC items (as needed) through our onboard MSW or PSW inverters for a couple of days with our current battery bank, but with the genny replenishing our 12 VDC reserves, it becomes a non-issue. We didn't buy a RV to not be able to utilize the creature comforts it provides by scrimping on energy usage, could of just stayed with tent camping if that was the case. We run our genny mostly to supply power to our high current draw items that we may use for an hour or two a day, all the while our Iota IQ4 quickly returns lost capacity from our taxing 12 VDC requirements when camping off the grid. To point, yes is the answer for if a genny is needed.