Is $38,900 to install a 9.36kW solar system with a Tesla Powerwall 3 battery a fair price?
Project Details
I'm looking to install a solar+battery system for my home (Southern California NEM 3.0). In the last 12 months we used 17,500 kWh. My neighborhood is fully electric and I also have an EV that I charge at home. I'm wondering if I need one Powerwall 3 or if I should go with a Powerwall and DC expansion pack? I plan on keeping my EV for several years, but unsure if I will have an EV for the life of the solar panel system. I'm looking for sizing advice and opinions regarding my quotes. I checked my green button data, and I average 13.7 kWh after sunset. I charge my EV overnight when my rate is $0.23 per kWh. I estimate that solar should reduce my rate to $0.15 per kWh or less. The question is whether I should get the expansion pack or wait and potentially add it later.
Quote Details
This option includes a 9.36kW solar system with a Tesla Powerwall 3 battery. - System Size: 9,360W - Estimated Production: 14,567 kWh - Panels: 22x QCell 430W - Inverters: Tesla - Battery: 1x Powerwall 3 - Company Warranty: 25 Year
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More Details
Category
Solar
Price
$38,900
Quote Date
July 14, 2025
Location
California
Battery Storage?
No
# of Panels
22
System Size (kW)
9.36
Warranty (yrs)
25
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