My cost for solar was $5.50 a watt for parts plus installation, four years ago. Total installed cost was $2300.00 In twelve years of rving I've only stayed in about 60 paid rv parks. In the past I used my rv for 50 nights per year. Even if I say I stayed in 60 in four years, I have 140 nights @ $xx.xx of savings.
On the other side of the ledger I've paid $3000.00 for generators. All of them have migrated to generator heaven (or hell). Total hours of run time were well under 300 hours. The cost figure does not include fuel and maintenance fees. I think the costs are at least another $1000.00.
I don't count the inverter nor batteries as I would have had both, but even if I do I've paid less for my solar system than for generators.
My goal was to be able to run a 540 watt block heater for 3 hours at -40, without destroying the battery bank. There is no place that has powered storage here.
In the past I drove a long ways nearly every day, so much of the "heavy lifting" on charging could be done with the alternator--but due to selling the house I'm in a semi-full time situation and the RV might only be driven for 16 kilometers (10 miles) a day.
In the first 48 hours I drove 1.6 kilometers (One mile). On both days the solar system fully recharged the battery banks.
The only generator I'd consider buying is the Yamaha 3000 seb. It would cost more or less the same as my solar system did four years ago, not counting running costs. I have no place to store it.
Costs for solar are now under $2.00 per watt for parts. It is a "no brainer" to go solar at that price, unless there is free power where the RV is stored. My system costs would be about $1300.00 today, including installation.
On day 3 I drove about 300 kilometers (180 miles)--and ran the water heater and fridge on 120 volt power from the inverter/solar/battery bank/alternator.
QUOTE(RLM @ May 16 2013, 05:57 AM)
Got a friend who has such a set up and he loves it. The sum energy is free, but the cost of the system isn't .