Unbiased, data-driven solar company rankings for every US state. Independent rankings based on reviews, BBB records, equipment quality, and more — not contractor funding.
This guide includes visual mapping of how these codes and standards interrelate, highlights major updates in the 2026 edition of NFPA 855, and identifies where overlapping compliance obligations may arise.
The first edition of UL 1487, the Standard for Battery Containment Enclosures, was published on February 10, 2025, by UL Standards & Engagement as a binational standard for the United States and Canada.
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.
The study, led by geospatial scientists Evan Rosenlieb and Marie Rivers along with legal and regulatory analyst Aaron Levine, is the first to quantify precisely how much energy could be harvested by deploying floating photovoltaic (PV) systems on federally owned or regulated.
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.