This battery storage update includes summary data and visualizations on the capacity of large-scale battery storage systems by region and ownership type, battery storage co-located systems, applications served by battery storage, battery storage installation costs.
The much-anticipated 2026 edition of NFPA 855: Standard for the Installation of Stationary Energy Storage Systems was made available last Thursday, ahead of schedule. You can read the new edition on NFPA Link now.
Average system prices range from $7,500-$13,000 for 10-20kWh installations, representing a 50% cost reduction since 2020. The United States leads with generous 30% federal tax credits (ITC) combined with state programs, reducing payback periods to 3-4 years.
Energy Capacity (kWh): The total amount of energy the system can store and discharge. For example: A 2 MW / 4 MWh BESS can continuously deliver 2 MW for 2 hours before it runs empty.
This review synthesizes state-of-the-art research on the role of batteries in residential settings, emphasizing their diverse applications, such as energy storage for photovoltaic systems, peak shaving, load shifting, demand response, and backup power.