What are the buyer's options at the end of the SPPA term? If the buyer has the option of buying the system, how will the price be determined?

There are three options at the end of the SPPA term: 1) the contract may be renewed and Horizon Solar Energy will continue managing the system, 2) the host can purchase the system and own it moving forward, or 3) if neither of those options are desirable, then Horizon Solar Energy is obligated to remove the system.