📌 Key Takeaway: Cash purchase offers the lowest total cost. Financing with a solar loan pushes the effective cost per watt to roughly $3.62 (versus $2.58-$2.78 cash) due to dealer fees averaging 19.99% of the loan principal, before interest even applies.

The Main Options

  • Cash purchase — lowest total cost, you own the system outright, and you qualify directly for any remaining state/local incentives. Requires the largest upfront payment.
  • Solar loan — spreads cost over time (commonly 20-year terms around 5.99% interest), but dealer fees typically add ~20% to the loan principal before interest applies, raising effective cost per watt significantly.
  • Solar lease — you pay a fixed monthly fee to use panels you don't own; simpler upfront but you don't qualify for incentives (the leasing company does), and total long-term cost is often higher than ownership.
  • Power Purchase Agreement (PPA) — you pay only for the electricity the system generates, often at a rate below utility prices, with no ownership and no incentive eligibility.

A Real Loan Cost Example

On a typical 7.2 kW system financed with a 20-year loan at 5.99% interest, a homeowner pays approximately $31,273 total in loan payments — meaningfully more than the same system's cash price, once dealer fees and two decades of interest are factored in.

Choosing the Right Option for You

If you have the cash available and plan to stay in your home long-term, cash purchase delivers the best value and full incentive eligibility. If upfront cost is the main barrier, a loan still lets you build equity in a system you own — just budget for the real, higher effective cost per watt. Leases and PPAs suit homeowners who want solar's environmental and bill-reduction benefits without any ownership responsibility, accepting a higher long-term cost in exchange for simplicity.

Frequently Asked Questions

Can I switch from a lease to ownership later?

Some lease agreements include a buyout option after a certain number of years, but terms vary significantly by provider — read the specific contract carefully before assuming this flexibility exists.

Do leases or PPAs qualify for any incentives?

Generally no for the homeowner — since you don't own the system, the leasing/PPA company typically claims any available incentives, not you, which is part of why ownership (cash or loan) usually offers better long-term value.