Understanding Your Solar Financing Options
How you pay for solar panels affects your total savings more than almost any other factor. The difference between a cash purchase and a lease can mean $20,000-$40,000 in total savings over 25 years. Let's break down each option with real numbers.
Option 1: Cash Purchase
How it works
You pay the full cost of the system upfront. You own the system, claim all tax credits and incentives, and keep all the electricity savings.
Example scenario (8 kW system)
- Gross cost: $24,000
- Federal ITC (30%): -$7,200
- Net cost: $16,800
- Annual electricity savings: $2,200
- Payback period: 7.6 years
- 25-year total savings: $38,200
Pros
- Highest total ROI and fastest payback
- You claim the full 30% ITC
- No monthly payments or interest costs
- Maximum increase in home value
Cons
- Requires $16,800-$24,000 upfront capital
- Ties up cash that could be invested elsewhere
Option 2: Solar Loan
How it works
You finance the system with a solar-specific loan. You own the system from day one, claim the ITC and all incentives, but make monthly loan payments. Popular lenders include Mosaic, GoodLeap, Dividend Finance, and Sunlight Financial.
Example scenario (8 kW system, $24,000 financed at 5.99% APR, 20-year term)
- Monthly payment: $172
- Monthly electricity savings: $183
- Net monthly cash flow: +$11 from day one
- Federal ITC refund (year 1): $7,200 (can be applied to principal)
- 25-year total savings: $22,000-$28,000
Pros
- $0 or low down payment
- You own the system and claim the ITC
- Can be cash-flow positive from month one
- ITC refund can pay down principal, reducing total interest
Cons
- Interest costs reduce total ROI by 20-35%
- Monthly payment obligation for 10-25 years
- May require good credit (typically 650+)
Option 3: Solar Lease
How it works
A solar company installs panels on your roof and you pay a fixed monthly fee to use the electricity they produce. The leasing company owns the system, claims the ITC, and is responsible for maintenance.
Example scenario
- Monthly lease payment: $120
- Monthly electricity bill reduction: $160
- Monthly savings: $40
- Annual escalator: 2.9% (typical)
- 25-year total savings: $6,000-$12,000
Pros
- $0 down, no upfront cost
- No maintenance responsibility
- Immediate savings with no risk
- Good for homeowners who can't claim the ITC
Cons
- Lowest total savings of all options
- You don't own the system or claim any tax credits
- Annual escalators can erode savings over time
- Can complicate home sales (lease transfer required)
Option 4: Power Purchase Agreement (PPA)
How it works
Similar to a lease, but instead of a fixed monthly payment, you pay a per-kilowatt-hour rate for the electricity the panels produce. The rate is typically 10-30% below your utility rate.
Example scenario
- Utility rate: $0.18/kWh
- PPA rate: $0.13/kWh (28% discount)
- Monthly savings: $35-$50
- 25-year total savings: $8,000-$15,000
Pros
- $0 down
- You only pay for what the system produces
- No maintenance costs
Cons
- Low total savings compared to ownership
- Rate escalators (1-3% annual)
- No tax credit benefit
Which Option Is Best for You?
- Cash purchase if you have available capital and want maximum ROI
- Solar loan if you want to own the system with $0 down and claim the ITC
- Lease/PPA if you want guaranteed savings with zero risk and don't qualify for tax credits
For a deeper look at financing providers and rates, visit our complete solar financing guide.
No matter which option you choose, the key is comparing multiple offers. Pricing and terms vary significantly between providers and installers. Compare free quotes on EnergySage to see loan, lease, and cash options side-by-side.