Propane generator..

Having had a propane whole house generator and used it through many, many multiple day outages (up to 12 days) I'd bite the bullet and get a diesel generator if I needed one.

The ease of refueling, and longevity of the motor are 2 big pluses in a diesel generator. The lack of common spare parts espeically in widespread outages is a major downfall to a pp gen. Find out what the local "generator rate" for pp is if this will be your sole pp appliance. If you rent your tank you will lack the ability to shop for propane suppliers.

For a household system:
- Natural gas if available.
- Propane if not (you can get a big tank easy)
- gasoline would be way down on the list as it goes bad if sitting.
- Problem with a solar system is it will need to be very large and it will need a very large battery bank to go with it. This makes it a very expensive option. (you can get a propane powered portable generator that will run all the items you list for under $1,000. A solar system that will run all the items for days will likely be well north of $10,000).

Note: This is for a household setup. For an RV setup that has to be mobile, the answers work out different.

If you live in an area with favorable sun I would go solar and battery. This system will save you money every single day.

1. Natural gas
2 propane
3. Gasoline

Propane will use a lot but doesn't go bad and doesn't gum up. Fortunately you shouldn't need it often and very long when you do.

A generator uses a lot of propane. If you have or plan to get a big tank, it may be a good choice. Trying to run on grill or RV bottles will be disappointing.

An electric water heater is an energy hog. It will use close to 5000W alone.

If you get a 7000W generator, you’ll use three 20lb grill bottles every day running at 3500W.

naqt or pp. reg gas turns to **** in a few months. my rv has a pp gen set 12years old and not one problem.

Since you posted on an RV forum I'll provide an RV answer. Buy an RV with a built in genset and in the case of loss of power, live in that until the outage is over.

But to the house question, sounds like you have a very small load you need to run, buy a portable gas generator big enough to power the things you have listed. Keep gas on hand and stabil in it when storing. Seems like a relatively small generator will do.

Unless the gas is natural, obviously go that way. do not go liquid gasoline as it goes bad, needs attention, etc. go propane then.
bumpy

By “gas” do you mean gasoline or natural gas? If you have the option of natural gas at your house, that would be the best option. Only way I would select propane is if you heat your house with propane and have a large tank. Otherwise go with gasoline.