Sounds very cool Enrique, thanks for describing it. A lot of folk will be very jealous of your set-up. I know I am :)
A couple of questions for you though, firstly have you thought about hydrogen generation? It sounds like you have minimal need to use it for backup, but it could be something that would completely reverse your remaining bills, to become income, and if you do have a fuel cell backup generator capable of running from it, for when all else fails, it would stand in for last line backup, after battery is exhausted, or if you have a peak demand that exceeds your current system capacity. This could remove your need to be grid connected also, saving you more money there.
There are folk who will try to claim that you would be outputing more heat than energy captured, but look, regardless of efficiency, the worst case heat that can be put back into the planet can never be worse than the energy in the sun would have been if it was unused. So every kg of hydrogen created is 33KWhrs removed from the energy of the sun, no matter how we cut it. You can then fairly exchange that product for the energy in the hydrogen, at market rates, no more, otherwise the energy difference between what you sold the fuel for, and what the buyer paid for it, has to come extracted from the planet, thus tying us into further extraction, by use of solar, ironically. This is why we should stress solar can't be supplied at profit, regardless if it is converted to hydrogen, or even food (See "Solein")... which brings us to another way you would save money, you could create food using a bioreactor - sounds more complex than it actually is, its just a mildly warm chamber fiilled low pressure hydrogen atmosphere, with single cell culture growing in it, the culture becomes food with 70% protein, 30% carbohydrate, which can be used to supplement food from the standard food chain, reducing our need for the latter, therefore saving you some food bills. Further, is your tap water drinkable? If not, you have water bills for drinking water, and those could be reduced if you ever use hydrogen locally, the exhaust has purified drinking water, whilst the input to your hydrogen generation process can be non-drinkable. The scenario if all communities become solar powered, and all are generating hydrogen, this can become the fuel used by aerospace, who would be purchasers of it from all communities, in addition to having their own solar farms around airports etc, it would soon become apparent cars might as well be hydrogen powered too, then you get all kinds of hydrogen circulation going on, with maximum air and water cleaning processes.
Sorry long response already.
Second question is, the more solar is used, the less extracted energy is used, therefore utilities energy supply business is shrinking, and we know this from analysis of utilities energy supply data vs demographics.
That trend is very new, and very fundamental to economics, it means that there is less and less business being done, on which money is created.
In other words, physical economic product creation from solar is already way ahead of issue of money, hence why the government is happy to give you grants, but if the grants are not for free, then they are not monetising the energy received for free, but actually tying us all still into extraction (In other words, profit has to be made from the land in some way or another). This disparity is also pushing inflation, its impossible for money issued as a requisite to make profit, to reflect the energy received for free from the sun, that is received with no possiblity of profit.
So there has to come a time when solar indexed stimulus will have to be issued.
Personally I think this is long overdue.
What do you think?
