Tesla powerwall 3 13.5 kWh - $9,300
EG4 Wall Mount Indoor Battery 14.3kWh - $3,300
https://signaturesolar.com/eg4-wallmount-indoor-battery-48v-...
I used to watch teardowns. It is all the same junk inside. It is a commodity you don't need Tesla or BYD to make you a pretty box really.
Here it is in action: https://www.youtube.com/watch?v=8W4dTw_hXdU
These have come a very long way in recent years and the price will continue to drop but the same applies. You don't need to wait as you'll be saving a negligible amount going forward.
If you know what you are doing all in <$5,000 to go off the grid.
The marketing, installation and paperwork triple or even quadruple the price as people way $whatever to not deal with it. Being a sparky is way more lucrative than even a plumber.
We picked the wrong career I tell you.
Here's the same fellow from above showing off the latest panels: https://www.youtube.com/watch?v=v33nbi7gKcY
From his perspective it is down to $0.27 per watt.
In order to fill up those 14Kwh batteries you'll need fewer than 10 panels (400watts per panel, x4 hours sunshine). So less than $1,000.
The inverter is less than $1,000.
And the battery is heading to below $3,000.
YouTubers like MKBHD have videos up where they paid six figures for their setups and wonder whether it is worth it due to the long payback heh. I know not fair comparison whatever, we're just talking.
I have no idea what to do about NIMBY type problems but you can setup an off grid cabin somewhere with all the creature comforts very very easily now.
If being a sparky didn't require apprenticeship i'd definitely consider that, the amount of money i've paid for these services have convinced me I'm not in the right field and i make high six figures as an engineer :(
Do home systems do thermal control?