HARTFORD, CT — A power company report has detailed the electricity reliability in Hartford, part of a recently released Eversource Energy report that details reliability statewide.
Eversource claims electric reliability for Connecticut customers has improved over the past decade, citing grid upgrades, automation technology, and vegetation management.
The company announced recently that customers now experience an average of one power interruption every 20 months, representing a 15% improvement since 2017.
Hartford electric customers experienced fewer and shorter power outages than the statewide average in 2025, according to Eversource's report.
The utility reported serving 61,799 customers in Hartford during the year.
According to the report, the average Hartford customer experienced one outage every 49 months, substantially less frequently than the statewide average of one outage every 20 months.
Customers in Hartford also spent less time without electricity overall. The average customer experienced 54 minutes of outage time during the year, compared with the statewide average of 81 minutes.
The scorecard notes that when an outage occurred, it took Eversource an average of 220 minutes, or about 3 hours and 40 minutes, to restore service.
While most customers experienced relatively reliable service, the report highlights that some Hartford residents faced repeated or prolonged outages. In 2025:
The utility's outage cause data shows that equipment failures remained the leading cause of power outages in Hartford, continuing a trend seen in recent years.
Equipment-related outages accounted for a larger share of interruptions than outages caused by animals, trees, vehicles or other factors.
The report also indicates that outages attributed to lightning declined significantly from 2023, while outages caused by animals and other factors made up a relatively small portion of the total.
Tree-related outages remained limited compared with equipment failures.
Eversource released the data as part of its annual electric reliability scorecards, which provide town-by-town information for the 149 Connecticut municipalities the company serves.
“These scorecards help our customers understand how outages impact their area while highlighting some of the critical work we do every day to strengthen our electric system and make it more resilient,” Eversource Vice President of Electric Field Operations Don Scacco said in a statement.
Scacco said the company uses outage data and cost-benefit analyses to determine where investments are needed, including smart switch installations and enhanced tree-trimming programs.
The scorecards also detail the leading causes of outages in each municipality and summarize local reliability and resiliency projects completed by the utility.
Eversource said ongoing infrastructure work includes replacing aging utility poles and electric lines with stronger equipment designed to better withstand severe weather.
For Connecticut's town-by-town reliability scorecard, click on this link.
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