Energy Storage Systems

The Energy Commission does not require submittal of information to the solar equipment lists as a condition for complying with Title 20 appliance efficiency standards or for installing equipment in California. Some utilities or local governments may use the Energy Commission’s solar equipment lists during their interconnection or permit application processes.

Note #1: The Energy Storage System List only includes battery energy storage systems.
Note #2: Energy storage systems on the list may incorporate a grid support inverter as a component. Grid support inverters are inverters that include advanced functionality and communication abilities and are commonly known as “smart inverters”. Note that the equipment on the Energy Storage System List is capable of different levels of advanced functionality. It is important that you verify with the applicable utility, AHJ, or responsible entity whether specific equipment contains the level of functionality required by their “smart inverter” definition. Information about advanced inverter functionalities can be viewed by exporting the list.
Note #3:  “JA12” references the 2022 or 2025 Building Energy Efficiency Standards' Reference Joint Appendix 12 (JA12). This appendix outlines requirements for integrated battery energy storage systems to qualify for the compliance credit or the prescriptive requirements of the battery energy storage system as required. Y (2022) corresponds to battery energy storage systems that comply with JA12 requirements of the energy code cycle 2022 and before, and Y (2025) corresponds to battery energy storage systems that comply with JA12 requirements of the energy code cycle 2025 and before. For more information, see the link.