1. A method for financing renewable energy systems, comprising: displaying, by a computing system, home loan options and lease options for a renewable energy system; receiving, by the computing system, a first selection of a home loan for a homeowner from the home loan options; receiving, by the computing system, a second selection of a lease for the homeowner from the lease options; offering the home loan to the homeowner in which the payments by the homeowner are at least in-part tax deductable; offering the lease to the homeowner for the renewable energy system; and determining, by the computing system, a deposit of cash proceeds from said home loan into a trust held by the equivalent of an escrow agent for the single purpose of paying lease payments for said lease as each payment becomes due; wherein, the determination of proceeds deposited from said home loan are effectively used to defease the debt represented by the future payment obligations of said lease.