I doubt there are very many wired as you suggest. A bigger concern for you may be parks (ours included) that do not allow the charging of electric vehicles. RV park loops are not designed to handle both the load of the RVs and charging electric vehicles. We do not take a chance that the extra loads from charging electric vehicles would lead to either voltage drop across the entire loop or overloading the main to the point the main breakers trip.
I smell a business opportunity. Disallow EV charging in campsites but provide EV charging at charging stations, for a fee.
You should be paying extra to charge your car. If not, charging your car will drive up camping fees overall, and frankly I am not interested in paying for your car. Like the politicians, get your hand out of my pocket!
It will happen. It's just that the times haven't caught up with the technology. Right now everyone gets "all you can eat" electricity at their campground as part of your site fees, because until now that has been a limited amount of power. Now that EVs are becoming a thing, this will likely change.
Renewable power is not getting cheaper and in fact when added to the traditional power grid of nuclear and natural gas, all it does is drive up the cost to the consumer.
This is false.
Globally, onshore wind schemes are now costing an average of $0.06 per kilowatt hour (kWh), although some schemes are coming in at $0.04 per KwH, while the cost of solar PV is down to $0.10 per KwH. In comparison, the cost of electricity generation based on fossil fuels typically falls in a range of $0.05 to $0.17 per KwH.
The figures are contained in IRENA's Renewable Power Generation Costs in 2017 report, which was released on January 13, the first day of the 8th IRENA Assembly in Abu Dhabi, the capital city of the UAE. The report predicts that solar costs will fall even further in the next few years, with a further halving of typical costs by 2020. That means onshore wind and solar PV projects could be consistently delivering electricity for as little as $0.03 per kWh within two years.
Adnan Amin, director-general of IRENA, says a significant shift is underway in the energy sector. “These cost declines across technologies are unprecendented and representative of the degree to which renewable energy is disrupting the global energy system,” he said.
https://www.forbes.com/sites/dominicdudley/2018/01/13/renewable-energy-cost-effective-fossil-fuels-2020/#308de78d4ff2
https://money.cnn.com/2018/09/14/investing/coal-power-natural-gas-renewable/index.html
Natural Gas
is giving a shot in the arm to fossil fuels, but like all fossil fuels, there is a finite supply of it and it's only a matter of time before it starts getting too costly to produce.
https://oilprice.com/Energy/Crude-Oil/The-Shale-Boom-Might-Not-Last-Long.html
And of course all of this ignores the pollution problem of burning things for energy, which many countries are now taking steps to combat.
