In renewable energy, net-metering: a certificate issued by the RE Registrar to Mandated Participants of the RPS showing the energy sourced, produced, and sold or used from the Eligible RE Systems [Section 3(tt), Rules and Regulations Implementing Republic Act No. 9513, as amended by Section 4(d), DOE Department Circular No. DC2020-10-0022, Prescribing the Policies to Enhance the Net-Metering Program for Renewable Energy Systems]