The purchasing and/or financing option you select for your solar project should reflect your existing and your planned structure as a utility, as well as your motivation for procuring renewable energy. PPAs are a popular model for co-ops as they allow you to capture the Investment Tax Credit from the selected developer, provide low technological risk through a long-term contract, and require a minimal upfront cost. If you are considering a solar loan in order to buy your system, we recommend seeking advice outside this website.