Connecticut Light & Power Co

What This Utility Data Tells You

Connecticut Light & Power Co is an investor-owned utility operating in Connecticut under EIA identifier 4176. It reports service to approximately 1,012,596 customer accounts and generated about $2.90 billion in annual electric revenue, with a service footprint spanning 378 ZIP codes. Because it is investor-owned, the state public utility commission oversees its rate cases and reliability performance rather than a local board.

In 2023, the average Connecticut Light & Power Co customer experienced 189.8 minutes of power interruptions, a metric called SAIDI (System Average Interruption Duration Index). Excluding major weather events from that total, that places this utility well below the 120–180 minute national benchmark, signaling strong grid hardening and fast restoration practices. The SAIFI figure, which tracks average outage events per customer, came in at 0.88 for the same period, meaning customers statistically saw about 1 distinct interruption that year. Strip out major event days (hurricanes, ice storms) and SAIDI falls to 75.6 minutes; the difference from the headline 189.8 shows how much of the outage total came from weather rather than everyday grid issues.

With 4 consecutive years of EIA data (2020–2023), Connecticut Light & Power Co's reliability record can be judged on trend rather than one isolated year. Over that window, SAIDI moved from 3117.2 down to 189.8 minutes, a trend worth noting for anyone weighing capital investment outcomes. Note: this figure is unusually low compared to typical U.S. utility performance and may reflect an incomplete EIA filing for this year rather than a genuine reliability improvement -- treat with caution and cross-check against Connecticut Light & Power Co's other reported years.