* 4.80 kW Solar Panels -- +$12,576
* 2 Powerwall Batteries -- +$18,500
* Cash Price -- +$31,076
* Federal Tax Credit -$8,080
* ---------------------
* Net Price: $22,996
I know this sounds like a bizarre setup (4.80 kW?) but my main goal was to be able to have two Powerwall backups that I would have incase the grid fails me. I charge the Powerwalls at night during offpeak hours for free and keep them near 100%.
29% of my energy needs are offset with the 4.80kW panels.
I plan to add more powerful solar panels soon. 9.6kW panels would allow me to offset 58% of my energy needs; it would add on $12k to my costs, but I am safe knowing that I don't need to completely rely on ERCOT and their mafia anymore (to an extent).
TL;DR $23k USD. I was able to get a 0% APR loan as well, so I'm paying around $130 / month. After including the energy generated/offset, it goes to net ~$93 month.