Is $20,500 to install a solar panel system with a Tesla Powerwall battery a fair price?
Project Details
I recently purchased a house in Arizona. My roof faces south, has no shade, and can accommodate unlimited panels. My average monthly electricity bill since purchasing in October has been about $137. Based on ChatGPT's estimates, my average yearly bill, including higher summer AC usage, would be around $150 per month from SRP. I am single and control my AC usage when I'm at work. I would likely qualify for the 30% federal tax incentive due to my income and plan to make extra payments to pay off the loan in 1-2 years. I'm trying to understand if solar makes financial sense for me, given my current $150 average SRP bill versus a $151 monthly loan payment plus potential SRP minimum charges. I'm new to solar and still learning about terms like kW. I'm also considering potential SRP rate hikes. I need to confirm with the installer that the system will minimize my reliance on SRP.
Quote Details
This quote is for the installation of a solar panel system with a Tesla Powerwall battery. The system is designed to meet 115% of estimated electricity needs. - Number of Panels: 12 - Panel Wattage: 450 watts per panel - System Size: 5.4 kW - Estimated Year 1 Production: 10,725 kWh - Battery: Tesla Powerwall Battery - Monthly Loan Amount: $151 (not assuming the 30% incentive is dumped back into the loan) - Loan Terms: 6-month grace period at 0% interest - Potential Incentive: Qualifies for 30% federal tax incentive
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More Details
Category
Solar
Price
$20,500
Quote Date
June 23, 2025
Location
Arizona
Battery Storage?
No
# of Panels
12
System Size (kW)
5.4
Warranty (yrs)
0
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