1. A method of delivering a solar system and related services from a solar system vendor to a customer, comprising: providing a sales lead that includes estimated requirements to a contractor, the contractor contacting the customer to perform a sales close, ordering solar system products from the solar system vendor, and issuing a payment for the products to the solar system vendor; financing the solar system by: providing a loan from a financial institution to the customer, providing periodic payments from the customer to the financial institution, and providing payments from the financial institution to the contractor and from the contractor to the solar system vendor; and issuing a government rebate to the customer upon purchase of the solar system, where the rebate is provided as whole or part collateral to the financial institution, allowing the customer to more readily finance the purchase of a solar system;