After the Part 1 Notification Date, you cannot add systems to your Proposal.

Systems that are co-located are considered to be separate systems for purposes of bidding in the procurement events as long as each system has its own separate revenue quality meter (or has its own production read separately) and has its own identifier in the applicable tracking system (GATS or MRETs).  For more information about the metering standards for the DG RFP please see FAQ-DG-30 posted to the FAQ page of the procurement website.