i find this to be, to me, a very false analogy, to put it politelyWhat you did is prepay for your energy in the form of the investment in the solar equipment, that is not free.
It is analogous to paying up front for an oil well and then receiving "free" energy for the next 20-40 years.
What is really interesting is that oil, like sunlight, is a limitless resource.
Read Julian Simon to understand this. All energy is "free", all it takes is human effort to access it.
i cannot and do not want to own an oil well, nor do I want an oil well and refinery and all the necessary materials for same in my and everyone else’s back or front yards.
(a few year back, based upon BP Statistical Analysis of energy usage published every yearly since around the 1960’s
humanity has used around 64 cubic miles of oil.)
I think you are also glossing or ignoring over the costs of mistakes that inevitably happen ( spills ) and have real extensive costs for both you and your neighbors to the point of planet wide costs.
Additionally, by adding enormous amounts of heat to a heat engine, the atmosphere, and oceans and shifting the costs to others, our descendants and residents of the planet, disasters exacerbated by this, we are shifting the true costs down the timeline past when we are dead.
And additionally, can you really justify “renting your energy” from polluting sources forever, making payments until you expire from a _non-renewable_ source in a reasonable time frame or ownership of the collection equipment for a nominal cost of literally free energy.
Before you argue costs of fossil fuels vs sunlight
Spindle top oil well was almost literally stick a hole in the ground and oil gushes out around 100+ years ago
now it’s Billion dollar oil rigs that fail, need to go to extremes to get, the Arctic or even miles down at ever increasing prices to get less and less usable delta energy
not quite exponential cost increases and _still_ needing refining
versus
photovoltaics which were roughly $1,600 per watt in the late 1950’s, $101 per watt in 1974 and now well under 50 cents per watt.
almost exponential cost _decreases_ in the cost to collect _free_ energy.
i would respectfully suggest you refine you thinking and get better references
( personally collected over 40 megawatt hours, and used, of free energy, sunlight)