Groton Dept of Utilities - (CT)

What This Utility Data Tells You

Groton Dept of Utilities - (CT) is a municipally-owned utility operating in Connecticut under EIA identifier 7716. It reports service to approximately 13,850 customer accounts and generated about $0.06 billion in annual electric revenue, with a service footprint spanning 5 ZIP codes. Municipal ownership means a local board or city council typically oversees this utility, and it is exempt from federal income tax.

In 2023, the average Groton Dept of Utilities - (CT) customer experienced 120.1 minutes of power interruptions, a metric called SAIDI (System Average Interruption Duration Index). That lands within the usual 120–180 minute national benchmark band, roughly on par with typical U.S. distribution-utility performance. Over the same period, SAIFI (outage events per customer) was 1.04, putting the typical customer at roughly 1 distinct interruption that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 120.1 minutes, the gap between that figure and the headline 120.1 reveals how much weather, not day-to-day infrastructure, drove outages.

With 4 consecutive years of EIA data (2020–2023), Groton Dept of Utilities - (CT)'s reliability record can be judged on trend rather than one isolated year. SAIDI climbed from 66.4 to 120.1 minutes over that window, a shift that can point to worsening weather exposure or delayed grid modernization.