IOU · Connecticut · EIA 4176
Connecticut Light & Power Co
IOU · Connecticut · 1.0M customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 190 minutes/customer.
Reliability verdict
Connecticut Light & Power Co shows above-average chronic reliability in 2023: 76 minutes SAIDI excluding major events (190 minutes including them) across 1.0M customers.
- 190 min
- SAIDI 2023
- 0.88
- SAIFI 2023
- 76 min
- SAIDI ex-MED
- 1.0M
- Customers
Chronic reliability judged on SAIDI excluding major event days when reported (IEEE 1366). Source: EIA Form 861 · August 2026.
Signature read: mid-cohort SAIDI between the 96 and 258 minute tercile cuts.
What mid-pack Connecticut Light & Power Co filings show
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.
Based on this utility's own EIA Form 861 reliability record -- baseline (major-event- excluded) outage duration, total outage duration, and outage frequency -- each benchmarked against every reporting utility nationwide. Not a measure of electricity rates or customer service, which this portal does not track.
190 outage minutes per customer annually
Minutes without power per year (2023)
SAIDI by year (2020-2023)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for Connecticut Light & Power Co from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
Connecticut Light & Power Co SAIDI trend
Connecticut Light & Power Co vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
190 Around the middle fewer outage minutes than 44% of 911 utilities
Utilities nationwide, banded by latest reported SAIDI (minutes)
Each bar is a band; taller bars hold more utilities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source U.S. EIA Form 861 reliability filings · August 2026
Price vs. reliability
Where Connecticut Light & Power Co sits on price vs. reliability
Among the 781 U.S. utilities large enough to report both revenue per customer and a recent outage record, Connecticut Light & Power Co charges more per customer than 68% of them, and is more reliable (lower SAIDI) than 48% of them, placing it in the quadrant where it pays more but is LESS reliable, a premium price without a reliability payoff. Revenue per customer and outage minutes are independent figures: paying more does not guarantee fewer outages.
Revenue per customer: $2,867/year · Latest SAIDI: 189.8 minutes/year.
SAIDI 2023 breakdown: 189.8 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 3117.2 | 69.7 | 2.010 | 1,281,157 |
| 2021 | 170.0 | 76.0 | 0.981 | 1,286,768 |
| 2022 | 190.3 | 73.4 | 0.908 | 1,293,731 |
| 2023 | 189.8 | 75.6 | 0.884 | 1,307,124 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
Connecticut Light & Power Co serves 378 ZIP codes in Connecticut.
Frequently Asked Questions
How reliable is Connecticut Light & Power Co?
Connecticut Light & Power Co had a SAIDI of 189.8 minutes in 2023 including major weather events, but 75.6 minutes excluding them (the IEEE-standard measure of day-to-day reliability, the gap reflects a major storm that year, not chronic performance). Leaving aside major weather events, that figure comes in under the national average, pointing to above-average reliability.
What type of utility is Connecticut Light & Power Co?
Connecticut Light & Power Co is classified as a IOU serving Connecticut.
How many customers does Connecticut Light & Power Co serve?
Connecticut Light & Power Co serves approximately 1,012,596 customers in Connecticut.
How has Connecticut Light & Power Co's reliability changed over time?
Connecticut Light & Power Co has 4 years of reliability data (2020-2023). SAIDI has held roughly steady across these years. Review the trend table above for year-by-year detail.
Utility Profile
- Type
- IOU
- State
- Connecticut
- Customers
- 1,012,596
- Annual Revenue
- $2.90B
- EIA ID
- 4176
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for Connecticut Light & Power Co. Same-state SAIDI neighbors stay in Read-with below; these neighborhoods are nearest other-state utilities with at least 10,000 reported customers.
Similar customer count
Nearest utilities by Form 861 customers (1.0M here), outside Connecticut.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (189.8 here), outside Connecticut, excluding the customer-peer set.
Source: U.S. Energy Information Administration Form 861 annual electric power industry survey · ZIP service territory: OpenEI. Disclaimer: informational only, not professional advice. See full disclaimer · methodology.