Nantucket Electric Co

What This Utility Data Tells You

Nantucket Electric Co is an investor-owned utility operating in Massachusetts under EIA identifier 13206. It reports service to approximately 2,218 customer accounts and generated about $0.01 billion in annual electric revenue, with a service footprint spanning 3 ZIP codes. As an investor-owned utility, it operates under state public utility commission oversight that reviews rate cases and reliability performance.

In 2023, the average Nantucket Electric Co customer experienced 44.5 minutes of power interruptions, a metric called SAIDI (System Average Interruption Duration Index). That keeps this utility below the typical 120–180 minute national benchmark, consistent with a well-hardened distribution system and fast restoration crews. SAIFI, the average number of outage events per customer, was 0.29 for the same period, so customers statistically faced roughly 0 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 44.5 minutes, the gap between that figure and the headline 44.5 reveals how much weather, not day-to-day infrastructure, drove outages.

Nantucket Electric Co has 4 years of continuous EIA reporting on file (2020–2023), enough to read a real trend rather than a single-year snapshot. SAIDI has improved from 70.6 to 44.5 minutes over that window, a meaningful direction for prospective customers and regulators watching capital investment outcomes.