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ISO Adds Class L for Lithium-ion Fires as NYC Sets 1 kWh ESS Threshold, Allstate Sprinkler Study Finds

01 THE MACHINE READ
WHY IT MATTERS.
Stricter lithium-ion fire codes raise compliance costs for storage installers but can lift demand for certified systems.
Storage safety rules tighten, reshaping battery deployment costs
NYC enforcement details and FDNY incident data
Cost burden could slow near-term ESS installs
FULL DISPATCH
A new international fire classification for lithium-ion batteries arrives as New York City enforces one of the strictest energy-storage thresholds in the country and FDNY logs hundreds of battery fires a year. THE BRONX, N.Y., Sept. 29, 2026 /PRNewswire/ -- Allstate Sprinkler, a fire...
02 THE STORY SO FAR
THE RECORD, IN ORDER.
STANDALONE ITEM — NOT YET FOLDED INTO A DEVELOPING STORY.
03 WHO'S INVOLVED
ENTITIES ON FILE.
04 RECEIPTS
THE SOURCE RECORD.
1 SOURCES CONFIRMED05 PROPAGATION
WHAT THIS TOUCHES.
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Summaries are generated and may contain errors — every claim links its sources.