rana wrote:<snip> Ok I understand we won't need a grid and we'll have to figure out how much propane/gas we'll need for the week.
Your rental RV should come with come with one or two bottles of propane. It/they will be either the 5 gallon (20lb) or 7 gallon (30lb) size.
A 7 gallon, 30lb tank weighs 55lbs when full and 25lbs empty.
You will need propane for hot water, furnace, stove/oven and fridge.
Hot water heater is controlled by a thermostat. There will probably be an on/off switch located somewhere in the RV. Turn it on in the AM about 20 minutes before showering. Maybe do your dishes at the same time. You shouldn't need it otherwise, so flip the switch to OFF til next shower.
The furnace is the largest drain on propane. If yer cold while inside, layer up. We'll mostly only run it if it's chilly when retiring or awakening. The FAN for the furnace is also one of the biggest draws on the batteries.
Stove and oven. Think outdoor gas grill. They're usually only used for 20-30 minute intervals. A tank will last a long time UNLESS YOU FORGET TO TURN OFF THE BURNER. Potential side benefit- Cooking will warm the inside of the RV.
Propane fridges are the bomb. Propane use is minuscule. The entire process works via a flame about the size of the pilot light on a home hot water heater. In 100 degree weather, my freezer maintains 2 degrees and the fridge stays at ~38. They say not to pack them to tight but I've had my freezer packed FULL with 400 freezer pops and not had any issues. If you don't have one, buy a digital thermometer so that you can monitor the temp. (A unit with remote sensors can let you keep track of fridge, indoor and playa)
If renting an RV I would have the dealer demonstrate each of these items works properly and be ABSOLUTELY CERTAIN that the fridge works ON PROPANE and not just electricity.
Last year, we used LESS than a full 7 gallon (30#) bottle in 9 days. Fridge was on all the time, meals/coffee daily, no furnace and I can't remember if we took hot showers or not.
So far as your "Grid" /Generator issues go, the only thing you will be using eletricity for is Air Conditioning and recharging your batteries. If you can do without the A/C, a solar setup from Harbor Freight for $169 might be enough to keep your batteries topped off.