608.4.1 Listing standards.
FC § 608.4.1
Stationary energy storage systems shall be listed to the following standards: 1. Underwriters Laboratories (UL) Standard 1741 (2010 edition), entitled "Inverters, Converters, Controllers and Interconnection System Equipment for Use With Distributed Energy Resources;" 2. Underwriters Laboratories (UL) Standard 1973 (2018 edition), entitled "Batteries for Use in Light Electric Rail (LER) Applications and Stationary Applications;" and 3. Underwriters Laboratories (UL) Standard 9540 (2020 edition), entitled "Energy Storage Systems and Equipment." Exceptions: 1. Any stationary energy storage system technology or application not subject to one or more of these listing standards shall comply with such other testing or listing standards as may be approved by the department.
2.A stationary energy storage system that received a listing under Underwriters Laboratories (UL) Standard 9540 (2016 edition) prior to the effective date of this section may be considered for a certificate of approval provided that such listing is still valid and the system was subjected to full-scale testing in accordance with FC 608.4.2.
3.A stationary energy storage system approved by the department under a listing standard superseded by a later edition may continue to be operated under such listing standard and department certificate of approval, provided that the listing is still valid and except as may be required by the department in accordance with FC 102.5.
