Long Island Power Authority

What This Utility Data Tells You

Long Island Power Authority is a state utility operating in New York under EIA identifier 11171. It reports service to approximately 1,154,795 customer accounts and generated about $3.67 billion in annual electric revenue, with a service footprint spanning 209 ZIP codes.

In 2023, the average Long Island Power Authority customer experienced 62.5 minutes of power interruptions, the industry-standard SAIDI metric (System Average Interruption Duration Index). That places this utility well below the 120–180 minute national benchmark, signaling strong grid hardening and fast restoration practices. SAIFI, the average number of outage events per customer, was 0.71 for the same period, so customers statistically faced roughly 1 distinct interruption that year. Strip out major event days (hurricanes, ice storms) and SAIDI falls to 59.3 minutes; the difference from the headline 62.5 shows how much of the outage total came from weather rather than everyday grid issues.

With 4 consecutive years of EIA data (2020–2023), Long Island Power Authority's reliability record can be judged on trend rather than one isolated year. SAIDI dropped from 79.2 to 62.5 minutes across that span, a direction regulators and prospective customers tend to watch closely.