February 24, 2022 – As we continue moving toward net zero, the need for energy storage systems (ESSs) will continue to rise in both residential and non-residential applications. Unfortunately, some confusion has arisen around 2021 Canadian Electrical Code requirements for residential applications, so let’s examine the installation of an ESS in a dwelling unit.The CE Code introduced two definitions for energy storage systems: Residential Use and Non-Residential Use. The former is marked as being suitable for residential use, and conforms to the requirements of ANSI/CAN/UL 9540 “Energy storage systems and equipment”.Further, an Appendix B Note to Rule 64-918(1) clarifies that UL 9540 requires ESSs intended for dwelling units to be marked “Suitable for use in residential dwelling units where permitted”. (Non-Residential Use systems are defined as not marked as being suitable…
Energy storage systems in residential occupancies – Code File, February 2022
