W&S-99: Is there a minimum milestone required for a Project to qualify under the Wind and Solar RFP?

No, there is no minimum milestone required; however, in the Part 1 Proposal the Officer of the Seller must certify that the Project has reached the appropriate development milestones to fully expect that the Project will deliver its first REC on or before June 1, 2021. Furthermore, as explained in Section IV.2.3 of the RFP Rules, if an Interconnection Agreement has not been executed for a Project, the Bidder must provide contact information for owners, demonstrate exclusive control of the project site, and describe the stage of development. Please see FAQ-W&S-94.