Solar Loan
Financing that lets you own a solar system with no upfront cost while preserving all ownership benefits — typically the best alternative to cash purchase.
Solar loans allow homeowners to own their system (capturing all tax credits, incentives, and home value benefits) while spreading payments over time. Three main structures exist: secured home equity loans/HELOCs (lowest rates, typically 6–8%, require equity), unsecured personal loans (higher rates, 8–18%, no equity required), and installer-arranged solar loans (often 2.99–6.99% "promotional" rates that may be achieved by adding a dealer fee to the system price — effectively hidden interest).
The "solar loan trap": many installer-arranged loans advertise very low rates (2.99%) but include a dealer fee of 15–30% added to the system price. This inflates the loan principal — a $25,000 system might be priced at $32,000 with the dealer fee included. The effective interest rate on the actual cost is much higher. Always compare the cash price versus the financed price.
Applying the federal tax credit to reduce the loan principal in year one (if your loan terms allow prepayment) is the optimal strategy — you reduce the balance by 30% immediately, significantly lowering total interest paid.
Real-World Example
The contractor quoted a cash price of $24,000 and a financed price (through the installer's lending partner) of $29,500 — the $5,500 difference was the dealer fee embedded in the loan; the homeowner chose a HELOC at 7.5% instead, saving $5,500 in upfront cost.