Requires cell towers to be equipped with a back-up power source in case of a power outage

This bill requires owners and operators of large cell towers (called "macro cell tower sites") in New York to install backup power systems capable of keeping towers running for at least 72 hours during power outages. The backup must use renewable energy, fuel cells, or energy storage, but existing towers with backup power do not need immediate upgrades until their current system requires replacement. It specifically applies to large outdoor towers providing wide-area service, excluding small cell systems or rooftop installations. The law takes effect 90 days after enactment.