Solar Financing Options: Loans, Leases, and PPAs Explained

Option 1: Cash Purchase

Paying cash is the simplest path and produces the highest lifetime return. You own the system outright from day one, you claim the full 30% federal tax credit, and you start saving immediately with zero monthly payment.

Pros

• Highest 25-year savings (no interest to pay)
• You claim the full 30% federal tax credit
• Full ownership — home value increase is fully yours
• Simple: no lender, no contract complexity

Cons

• Large upfront outlay ($10,000–$25,000+)
• Capital tied up that could be invested elsewhere

Best for: Homeowners with savings who want maximum ROI and plan to stay long-term. At an 8% investment return, money is arguably better in the market — but solar's guaranteed, risk-free return often beats that.

Option 2: Solar Loan ($0 Down)

Solar loans are the most popular financing option, used by roughly 60% of buyers. You borrow the full installation cost and pay it back monthly — typically over 10, 15, or 25 years. You still own the system and claim the tax credit.

How Solar Loans Work

Most solar loans are unsecured (no home equity required), with rates currently ranging from 4.99%–8.99% APR depending on your credit score and loan term. The lender pays the installer directly; you make monthly payments to the lender.

The Tax Credit Strategy

Many solar loans are structured as 18-month "promotional" loans. The expectation is that you use your 30% federal tax credit to pay down the principal in year one, then refinance the remainder at a long-term rate. This dramatically reduces total interest paid — but read the fine print, as some loans have a balloon payment if you don't use the tax credit.

Pros

• $0 down, immediate monthly savings
• You own the system and claim the tax credit
• No home equity required

Cons

• Interest reduces overall savings
• Requires good credit (typically 650+ score)

Option 3: Solar Lease

With a solar lease, you don't own the panels — a solar company does. They install the system on your roof for free and charge you a fixed monthly "rental" fee (typically $50–$150/month). You keep the electricity the panels produce, but the leasing company keeps the tax credit and SRECs.

Pros

• $0 down and no ownership responsibility
• Maintenance and monitoring handled by lessor
• Predictable monthly payments

Cons

• You do NOT get the 30% federal tax credit
• Savings are smaller than ownership options (30–50% less over 25 years)
• Lease complicates home sale — buyers must assume the lease
• Annual payment escalators (2–3%/year) in some contracts

Best for: Homeowners who don't qualify for loans, want zero maintenance responsibility, and are comfortable with lower (but still real) savings.

Option 4: Power Purchase Agreement (PPA)

A PPA is similar to a lease but instead of paying a flat monthly fee, you pay for the electricity your panels produce at a fixed per-kWh rate — typically 10–20% below your current utility rate. The solar company owns the panels; you buy the power.

Pros

• $0 down, immediate electricity savings
• You only pay for power you actually use
• Maintenance covered by the PPA provider

Cons

• No system ownership — no tax credit, no home value benefit
• 20-year contracts can complicate home sales
• Rate escalators of 2–3%/year are common
• Not available in all states (most common: CA, AZ, TX, NY, NJ, MA)

Which Option Saves You the Most?

Here's a 25-year comparison for a 6 kW system ($18,000 installed) in a state with $0.16/kWh electricity rates:

Cash wins financially, but a solar loan comes close while preserving capital. Leases and PPAs offer convenience at the cost of significantly lower lifetime savings.

Use our Solar Calculator to estimate your specific savings under each scenario based on your actual electricity bill and location.