Solar loan dealers fees (hidden 25-30% markups) make financed systems cost far more than cash

When a homeowner finances a rooftop solar installation through a solar-specific loan product offered by the installer, the loan typically includes a "dealer fee" of 25 to 30% that is rolled into the principal balance. This means a system that costs $25,000 to install is financed as a $32,000 to $33,000 loan. The dealer fee is technically disclosed in the loan documents, but it is buried in fine print and the installer never highlights it because their quote shows the cash price while the monthly payment is calculated on the inflated principal. The homeowner sees a $150/month payment and does not realize they are paying $7,000 to $8,000 extra over the loan term. This matters because the effective interest rate on solar loans, once the dealer fee is included, is often 8 to 12% even when the nominal APR shown on the loan documents is 0.99% or 1.49%. The homeowner thinks they got a great rate but is actually paying more in total finance charges than they would with a standard home equity loan at 7%. The low advertised APR is the bait; the dealer fee is the hook. A homeowner who could have paid $25,000 cash or taken a $25,000 HELOC at 7% ends up paying $33,000 through a "1.49% APR" solar loan. The downstream effect is that financed solar systems take significantly longer to reach positive ROI than the installer's proposal shows. The proposal models a $25,000 system with a 7-year payback, but the homeowner actually spent $33,000 and the real payback is 9 to 10 years. When the homeowner realizes this, they feel deceived, and they are right to feel that way. This fuels the narrative that solar is a scam, which harms the entire industry. This persists because the dealer fee structure benefits everyone in the transaction except the homeowner. The solar installer gets the full cash price for the system immediately. The lending company (Goodleap, Mosaic, Sunlight Financial) earns interest on an inflated principal. The salesperson earns a higher commission on the higher loan amount. The only party who loses is the homeowner, who is the least financially sophisticated participant in the transaction and the one with the least access to information. At the root, this problem exists because the solar lending market is not subject to the same transparency requirements as mortgage lending. The Truth in Lending Act (TILA) requires APR disclosure but does not require the total-cost-including-dealer-fees comparison that would make the true cost obvious. Solar loans are technically home improvement loans, but they are marketed and sold through solar companies rather than banks, and the solar company has no fiduciary duty to recommend the cheapest financing option.