Solar bonds could lower financing costs for rooftop panels in the UK and US

Advocates suggest that retail-oriented solar bonds, similar to traditional infrastructure bonds, could provide low-cost financing for residential rooftop solar installations. Homeowners would benefit from reduced interest costs, and investors would receive a modest, secure return. Because the debt would be attached to the property, moving does not jeopardize repayment, unlike many current loan products.

The UK could secure repayments via a standing charge on the national electricity bill, while the US would likely need separate state programs due to diverse utility pricing. This financing model would sit alongside leases, power-purchase agreements, and green-bank loans, filling the niche where those options either forfeit ownership or bind the loan to the individual borrower. The timing is critical as the 30% residential solar tax credit and the federal Solar for All program have both ended, leaving a financing void that could shape future energy independence.