D.C. Mun. Regs. tit. 12, 12-I-Z4
The provisions of this Section Z4 shall apply to all building projects that opted for Appendix Z as a path of code compliance.
The purpose of this Section Z4 is to provide requirements that will ensure that buildings are constructed or altered in a way that will provide the capability for their energy use, production and reclamation to be measured, monitored and reported.
This includes the design of energy distribution systems so as to isolate load types, the installation of meters, devices and a data acquisition system, and the installation of energy displays and other appropriate reporting mechanisms.
All forms of energy delivered to the building and building site or produced on the building site or in the building, shall be metered and all energy load types measured.
In addition to requirements outlined in the Energy Conservation Code-Commercial Provisions, all centrally ventilated building systems shall be designed to enable the collection of real-time and historical ventilation flow rate data.
In places where equipment constraints in the distribution network render net metering impossible, onsite storage options shall be considered.
D.C. Mun. Regs. tit. 12, 12-I-Z4