Z4. ENERGY METERING, MONITORING AND REPORTING

APPENDIX Z NET-ZERO ENERGY COMPLIANCE PATH Z4 ENERGY METERING, MONITORING AND REPORTING Z4.1. Scope. The provisions of this Section Z4 shall apply to all building projects that opted for Appendix Z as a path of code compliance. Z4.2. Purpose. 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. Z4.3. Energy metering. 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. Z4.4. Ventilation flow rate. 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. Z4.5. Grid integration. In places where equipment constraints in the distribution network render net metering impossible, onsite storage options shall be considered. SOURCE: Final Rulemaking published at 67 DCR 6326 (May 29, 2020 – Part 2). The District of Columbia Energy Conservation Code (2017), referred to as the “Energy Conservation Code,” consists of ANSI/ASHRAE/IES 90.1-2013, Energy Standard for Buildings Except Low-Rise Residential Buildings (ASHRAE 90.1) and substantial portions of Chapter 7 of ANSI/ASHREA/IES 189.1-2014, Standard for the Design of High-Performance Green Buildings Except Low-Rise Residential Buildings (ASHRAE 189.1), published by the American Society of Heating, Refrigeration and Air-Conditioning Engineers (ASHRAE), and the Residential Provisions of the 2015 edition of the International Energy Conservation Code (International Energy Conservation Code), published by the International Code Council (ICC), as amended by the Energy Conservation Code Supplement of 2017 – Commercial Provisions (12-I[CE] DCMR) and the Energy Conservation Code Supplement of 2017 – Residential Provisions (12-I[RE] DCMR). The International Energy Conservation Code is copyrighted by the ICC and therefore is not republished here. However, a copy of the text may be obtained at: https://codes.iccsafe.org/public/document/IECC2015. ASHRAE 90.1 is copyrighted by ASHRAE and therefore is not republished here. However, the text of ASHRAE 90.1 may be reviewed at: https://www.ashrae.org/standards-research--technology. Portions of Chapter 7 of ASHRAE 189.1 are reprinted in the District of Columbia Energy Conservation Code Supplement by permission of ASHRAE and ICC. District of Columbia Municipal Regulations Energy Conservation Code Supplement of 2017 – Commercial Provisions 12-I[CE] DCMR Appendix Z4