Standard permitting and inspection processes for solar photovoltaic (PV) systems and energy storage systems (ESS) can vary greatly across local jurisdictions, increasing costs and extending project timelines for building officials, contractors, and system owners. For many residential projects, including rooftop PV systems up to 15 kilowatts (kW) and in some cases for ESS up to...

Solar energy systems can sometimes face more complicated and costly permitting processes in areas where permit reviewers are less familiar with the technology. A simplified process can help streamline the permitting of most residential rooftop photovoltaic (PV) systems, including those with energy storage. This simplified process can help reduce informational barriers and ensure that all...

Energy storage systems (ESS) are becoming more common across the country. When inspecting a PV + ESS, there can be a lot of system components to review, from the modules, to inverters and disconnects, to the ESS itself. To ensure a safe and correct inspection, it is valuable to understand the system components you will...

With the prevalence of energy storage system (ESS) installations, codes and standards have been updated to address the technology. Product standards like UL 9540 and testing like 9540A allow for safer installation of energy storage systems. The codes and standards require electrochemical ESSs to be listed in accordance with UL 9540, the Standard for Safety...

Permit applications are on the rise for residential energy storage systems in jurisdictions across the country. In some cases, building departments are seeing these systems for the first time. The permitting and inspection of an energy storage system extends beyond just the National Electrical Code® (NEC). The permit application should be reviewed by the wiring...

With the prevalence of energy storage systems (ESS), particularly battery energy storage systems (BESS), this question is asked by authorities having jurisdiction (AHJ) across the country. For one-two family dwelling units, BESS are permitted for installation in detached garages/accessory structures, attached garages separated from the dwelling in accordance with International Residential Code® IRC® R302.6 (occupancy...