The math is compelling: most Tucson homeowners pay $150 to $300 monthly for Tucson Electric Power service. A financed solar system typically costs $120 to $220 per month with $0 down, creating immediate positive cash flow. You’re trading an expense that increases annually (rising TEP rates) for a fixed payment that ends in 10-25 years, after which you enjoy virtually free electricity for the remaining life of your system.
Solar financing options have evolved dramatically. Today’s products offer competitive interest rates (2.99% to 6.99% APR), flexible terms (10 to 25 years), and seamless application processes with decisions in minutes. Whether you prefer ownership through loans, want to leverage home equity, or need budget-friendly lease options, there’s a financing path designed for your situation.
Payment Options
Solar Financing Paths for Tucson Homeowners
Cash Purchase
Pay upfront and own your system immediately. Claim the full 30% federal tax credit and maximize lifetime savings.
- Highest lifetime ROI
- No interest charges
- Immediate 30% tax credit
- Simple, straightforward
- 6-8 year payback typical
Best For
Homeowners with available savings seeking maximum long-term value
Solar Loan ($0 Down)
Own your system with zero upfront cost. Monthly payments typically lower than your current electric bill.
- Zero down payment required
- Rates from 2.99% to 6.99% APR
- Terms: 10, 15, 20, or 25 years
- Claim full 30% tax credit
- Positive cash flow from day 1
Best For
Most homeowners wanting to own solar without upfront investment
Home Equity Options
Leverage home equity for lowest interest rates and potential tax-deductible interest (consult tax advisor).
- HELOC or home equity loan
- Lowest interest rates (3-5%)
- Potentially tax-deductible
- Longer repayment terms
- Preserves cash reserves
Best For
Homeowners with substantial home equity and good credit
Monthly Payment Breakdown
Solar Loan vs. Electric Bill Comparison
Before Solar
Monthly TEP Electric Bill
$225
Annual Cost
$2,700
Rate Increases
3-5% higher each year
Equity Built
$0 — pure expense
25-Year Cost
$81,000+
Accounting for 3% annual increases
With Solar Loan
Monthly Solar Payment
$175
Annual Cost
$2,100
Rate Increases
Fixed payment — never increases
Equity Built
$20K+ home value increase
25-Year Total Cost
$31,500
20-year loan + 5 years free power
Total Savings Over 25 Years
$49,500
By switching to financed solar instead of continuing with TEP
Loan Programs
Solar Loan Terms and Requirements
Interest Rates & Terms
Solar loan interest rates range from 2.99% to 6.99% APR based on credit score, loan term, and lender. Longer terms (20-25 years) have lower monthly payments but slightly higher rates and total interest paid. Shorter terms (10-12 years) have higher payments but less total interest.
10-Year Loan
2.99-4.99% APR • Higher payment • Less total interest
20-Year Loan
3.99-5.99% APR • Lower payment • More flexibility
Credit Requirements
Most solar loan programs require minimum 640-680 credit score, though some lenders approve scores as low as 600 with higher interest rates. Debt-to-income ratio should be under 50%. Self-employment or alternative income sources are acceptable with documentation.
Excellent (740+)
2.99-4.49% APR
Highest approval odds, best rates
Good (680-739)
3.99-5.49% APR
Strong approval odds, competitive rates
Fair (640-679)
4.99-6.49% APR
Moderate approval odds, higher rates
Below 640
6.49-6.99% APR
Limited options, case-by-case review
Tax Credit Consideration
When you finance solar, you still claim the full 30% federal tax credit — typically $5,000 to $8,000. Many borrowers use their tax credit refund to pay down principal, effectively reducing total interest paid and shortening loan term. Some lenders offer special re-amortization features designed specifically for this strategy.
Ownership Matters
Solar Loans vs. Leases: Why Ownership Wins
Solar Loan (Ownership)
-
You own the system Build $20K+ home equity immediately
-
30% tax credit Claim $5,000-$8,000 federal credit
-
Maximize savings Keep 100% of electricity production value
-
Increase home value Owned solar adds significant resale value
-
Payment ends Loan paid off in 10-25 years, then free power
-
No escalator Fixed payment never increases
Solar Lease (Not Recommended)
-
Leasing company owns system You build zero equity
-
No tax credit for you Leasing company claims it, not you
-
Lower savings Lease payments often equal electric bills
-
Complicates home sale Buyers must assume lease or you buy out
-
Payment never ends 20-25 year lease keeps charging you
-
Annual escalator Payment increases 2-3% per year