This was one of my major disappointments when I looked into solar the first time. I don't want to stick panels on top of my house that are basically just feeding back into the grid. I want to have panels that first feed my house, and maybe if there's extra feed it into the grid, but if the grid goes down I still have a more-or-less functional house. A big part of solar's value to me is the renewable, off-grid backup power. Solar has the interesting and useful characteristic that it keeps working even if things have really gone to pot and you've even lost gas and water for some reason. Having lots of houses like this scattered all over the place greatly increases civilizational resilience. (That is, I'm not so much trying to plan for "The End Of The World" just for me personally with my own solar install, but want the resilience at the societal level, and might be willing to pay to help it along.)
If solar's just going to feed back into the grid, I might as well just let the utility companies manage it themselves. It's more efficient than anything I can do myself.
Unfortunately, it seems like the way solar works helps that goal much less than I'd like. I hardly need multiple kilowatts of power backing a single functional outlet that almost seems begrudgingly provided.
I'd be interested in anyone who has experience in perhaps managing to set their house up the way I describe, what magic words to Google or say to installers to talk about this, and how much more money it may have been.
I used to manage solar installations, couple of things:
1. Electrically, solar does feed your house first. It interconnects before the meter and into your main electric panel. The reason it doesn't work during an outage is because of regulations requiring solar to turn off during power outages so that electricians fixing downed lines don't have surprise power from random houses after they turn off the grid power.
2. If you want solar to work during an electric outage you need to install a battery backup that can feed it AC power and disconnect it from the grid during a grid failure. However, you need a pretty big battery to power a full house for a long time so it's generally cheaper and easier to have a gas generator backup if you are worried about this. Batteries are really just good for energy arbitrage purposes these days.
The real money ends up being in the power storage. Obviously there's such a thing as 'night' and multiple days without full sun (or snow on your roof depending on the area).
I wonder how many electric F-150s will get sold to people on the basis of using them as a whole-house battery.
I fully agree on your point of the lack of logic to grid-based solar. No doubt large scale facilities can be placed in better areas, be cheaper per watt, have higher uptime, are able to afford the more exotic power storage (dams for one).
Now, if it were me, I'd start with new construction designed around low power usage. LED lighting, efficient computers, chest freezer turned into a refrigerator, no electric heat or dryers or transfer fans for gas heaters. The sticking point would tend to be A/C but I think that can be mitigated via small house size, insulation, and use of efficient split systems. The smaller the electricity use the more tractable the problem.
The term you are looking for is called islanding. When the grid goes down you want it to throw an automatic transfer switch and power your house from solar and/or batteries. When the grid returns, you want it to resync the AC wave and draw from the grid as needed. Check out the Victron Multiplus as an example.
My house is set up like you describe. The whole solar/battery system never interconnects with the grid, and is instead set up like a generator. There is a transfer switch to choose between "generator" power and grid power. If there is some exceptional weather and the battery gets too low, we switch to grid. If the battery is full and the day is sunny we often dump power into the car, air conditioning, or whatever.
If solar's just going to feed back into the grid, I might as well just let the utility companies manage it themselves. It's more efficient than anything I can do myself.
Unfortunately, it seems like the way solar works helps that goal much less than I'd like. I hardly need multiple kilowatts of power backing a single functional outlet that almost seems begrudgingly provided.
I'd be interested in anyone who has experience in perhaps managing to set their house up the way I describe, what magic words to Google or say to installers to talk about this, and how much more money it may have been.