Eversource Rate Increase 2027: 18% Asked in Connecticut

Eversource’s Connecticut Light and Power (CL&P) is asking state regulators for a $727 million annual increase in electric distribution revenue, which the Attorney General says would raise average residential rates about 18%. Eversource puts that at about $32 a month for a typical home using 700 kWh. The request is pending before the Public Utilities Regulatory Authority (PURA) in Docket No. 26-05-10, with public comment hearings on Nov. 16, Nov. 23 and Dec. 9 and a decision expected around June 28, 2027. Nothing has been approved.

The case covers distribution, the part of the bill that pays for poles, wires and the company’s operations, not the standard service supply rate. For this year’s supply rate drop and the temporary public benefits credit, see how Connecticut’s supply rates and solar credits changed in 2026.

What Eversource Is Asking For

Attorney General William Tong said in a July 14, 2026 statement that Eversource is “seeking a $727 million annual rate increase” and that “the average residential customer would see rates rise by 18 percent.” AARP Connecticut, in comments dated Oct. 29, puts the 700 kWh figure at $32.91 a month, or nearly $400 a year.

Our math: $32.91 × 12 = $394.92 a year for a 700 kWh-a-month home under the full request. The roughly $20-a-month version works out to about $240 a year. Homes that use more electricity would generally see larger dollar increases.

The 11% Version: Storm Costs

The size of the increase depends partly on how older storm costs are paid. Eversource told Connecticut Public that if historical storm costs “are ultimately financed separately through securitization,” the typical 700 kWh increase “would be about 11%” or “roughly $20 a month,” instead of “the approximately 18% increase or $32 per month reflected in the filing.” The Attorney General’s statement says that without 2018-2025 storm costs, “Eversource is seeking a $451 million rate increase, resulting in an 11 percent increase for residential bills.” It adds that storm costs for 2024 and 2025 “will be considered as part of this latest rate case.”

Securitization means paying off a cost with long-term bonds repaid through a separate charge, which usually spreads the cost over more years. Customers would still pay for the storm costs either way; the 11% figure is lower partly because those costs are handled outside the base-rate increase.

A separate PURA case already ruled on Eversource’s 2018-2023 storm costs. In a July 29, 2026 release, the Attorney General said PURA approved about $861 million and that “the total to be collected from customers will be $668 million plus applicable going forward carrying charges.” Eversource has appealed that decision to New Britain Superior Court, according to the Office of Consumer Counsel (Oct. 15, 2026), seeking about $397 million in retroactive carrying charges PURA disallowed. The release did not say when that storm charge would show up on bills.

Timeline and How to Comment

Hearing dates are from the Acadia Center and AARP Connecticut; the decision date is the Acadia Center’s estimate based on the 350-day review that Connecticut law allows. You can also submit a written comment through PURA’s public comment page; PURA says comments “become a public record and will be posted in the public docket database.” Reference Docket No. 26-05-10.

Clean energy groups have filed testimony too. Testimony filed for Vote Solar and the Acadia Center recommends that PURA reject Eversource’s own performance-based plan in favor of the framework PURA developed with stakeholders, according to Vote Solar. The Attorney General and AARP Connecticut have publicly opposed the request; AARP has asked PURA to reject it. PURA can approve the full amount, less, or a different structure.

What It Means for Your Bill and Solar

Your bill. The request changes distribution charges. Your supply rate (standard service or a third-party supplier) is set separately, so your total bill in mid-2027 will also depend on the next supply rate changes and on what happens to the public benefits credit, which Eversource has said is temporary. For context, Connecticut’s average residential price was 24.51 cents per kWh in August 2026, down from 30.17 cents a year earlier, according to EIA’s preliminary data. That is a statewide average for all utilities, not Eversource’s tariff.

Solar owners and shoppers. Under Connecticut’s Residential Renewable Energy Solutions netting option, surplus solar earns credits at the rate you pay, so a higher distribution rate generally makes each kilowatt-hour your panels cover worth more. Buy-all customers are paid a fixed rate per kWh that this case does not set. If you are weighing solar, run your numbers at today’s rates and treat a rate increase as possible, not certain; our solar payback calculator lets you test both. Our explainer on kW vs kWh shows how to read the usage line on your bill.

Sources and verification

Limitations

We could not open PURA’s docket filings or Eversource’s rate review page directly during this check, so the company’s bill estimates come from news coverage and advocacy groups that quote the filing. Sources describe the 18% differently (as a rate increase, a bill increase, or a distribution-rate increase); Eversource’s and AARP’s dollar estimates use a 700 kWh typical home. Figures are requests and can change in settlement or PURA’s decision. United Illuminating customers are not affected by this case.