Eversource Connecticut Electric Rates: The Credit Year and After

For most of the last two years the loudest line on a Connecticut bill was a charge. This year it is a refund, and the refund has an end date. Try your own kWh below, then read what would have to happen for each of those outcomes.

If the credit ends

Nobody has said what replaces the credit next May, so the tool offers three reference points instead of a guess. If the credits simply lapsed, a 700 kWh month would cost $14.75 more. A return to last year’s level of about 4¢ would add $37.85. The July 2024 peak is there for scale.

The bill today

Rate 1 has eleven per-kWh lines and one fixed charge. Almost everything scales with use: the $9.62 customer charge is the only part you pay at zero kWh. Supply is 11.58¢ and everything else nets to 12.0¢.

From the filed Rate 1 tariff, approved by the Connecticut Public Utilities Regulatory Authority. The bar leaves out the 1.911¢ credit, which comes off the total.

Why a charge became a credit

“Public benefits” on an Eversource bill holds two things: the combined charge for hardship programmes, conservation and renewables, and the federally mandated congestion charge, which carries contract costs set by state and federal policy. On 1 July 2024 those two rose by 6.57¢ between them. By this May they had turned negative.

What is inside the swing

• NuclearThe Millstone line went from a $56 million cost to a $160 million net benefit for Eversource customers. The Consumer Counsel puts that down to higher natural gas and wholesale prices in 2025, which made the fixed-price Millstone and Seabrook contracts profitable.
• BondsPublic Act 25-173 moved electric vehicle charging and arrearage costs onto state bonds, taking more than $155 million out of the charge in 2025–26 and $145 million in 2026–27.
• HardshipEversource’s hardship protection costs fell by $34 million in 2025, helped by changes to bill assistance and forgiveness programmes.
• RefundsEarlier over-collections are being returned, and some contract and programme costs have expired or shrunk.
• AgainstTransmission went up. So did a storm line: the regulator added $100 million to the storm reserve through the competitive transition charge, about $3.50 on an average month.

The nuclear line deserves a second look. The contracts pay out because market power got expensive, so the credit is partly the mirror of a high supply price. In 2023 the same Millstone contract cost customers $64 million. By that logic, a cheap gas year could shrink this credit even as standard service falls.

Did bills really fall?

Yes. Federal data on what homes actually paid shows the summer of 2026 well below the summer before. The Consumer Counsel estimated 4.4¢ off at the May change, and the regulator 4.3¢.

Do not read the last column as the credit alone. It blends homes on standard service with homes on supplier contracts, and standard service itself rose over those months, from 9.75¢ to 11.58¢ in July and August. The Consumer Counsel’s own figure for the two 2026 changes together is roughly $38 off an average monthly bill, an 18% cut.

Take the credit away

Here is the comparison the headlines skip. Between July 2024 and today, the public benefits lines fell 9.8¢ per kWh. Everything else on the bill rose 4.6¢. Supply is up 2.6¢ and transmission 1.6¢. The all-in price went from 28.8¢ to 23.6¢, so the relief is real, but one section of the bill delivered all of it while the others climbed.

July 2024: Office of Legislative Research, table 3. Today: Rate 1 tariff.

One line did not move at all: the 5.844¢ distribution charge is the same in both columns. That is the line a rate case would reopen.

Standard service since 2022

Standard service is the supply price you get if you never choose a supplier. It changes on 1 January and 1 July, and Eversource says it makes no profit on it. The price reached 24.17¢ in the first half of 2023 and has not been near it since.

Comparing a supplier

Eversource says nearly 84% of its homes were on standard service in September 2025. Federal data for 2025 agrees, at 83%. The bars show how that share has moved over the past decade.

Share of the utility’s homes buying power from the utility itself, each year. EIA-861, Parts A and C, 2025 latest.

When you compare an offer, use the number on this page rather than the one in the tariff. The tariff lists generation at 11.787¢ and then a separate congestion credit of 0.210¢, which is how you arrive at 11.58¢. That credit is not available to homes on a third-party supplier, so 11.58¢ is the true figure to beat. The rate board at EnergizeCT lists current offers. The Consumer Counsel notes suppliers cannot charge sign-up, monthly or early termination fees, and you can return to standard service at any time. Our Connecticut page shows how to price an offer against the whole state market.

Four things that could move it

• 1 Jan 2027Standard service resets. The price had not been published when we last checked; last year’s was announced on 17 November. In the last four winters it has been higher than the summer before.
• 30 Apr 2027The current public benefits rates run out, and the next annual review replaces them. The regulator called this year’s rates interim and said a prudence review could change them from 1 September. The tariff Eversource still posts on 9 November is the July one.
• Rate caseOn 14 July 2026 Eversource asked for $727 million a year. The Attorney General says that would lift the average home’s rates by 18%, storm costs included. It is a request; the regulator has not ruled.
• Storm costsIn July the regulator allowed $861 million of the $1.36 billion Eversource sought for storms from 2018 to 2023. Eversource has appealed in Superior Court, and the Consumer Counsel says it wants $400 million more.

Prices back to 1990

Over the long run the average price went from 9.8¢ in 1990 to 26.9¢ in the latest 12 months, up 175.8% over the period; prices in general are up 153.6%. The largest step came between 2021 and 2023.

The shape of a year

The average bill reached $238 in July and $145 in October. Summer air conditioning usually does the lifting: the Consumer Counsel says use rises about 35% in the cooling months, so a falling rate and a rising bill can arrive in the same envelope.

Average for each calendar month over the last 36 months EIA has published: bill per home, with the price per kWh that month beneath it.

Other home rates

Rate 7 is the time-of-day option, with a peak window of noon to 8 p.m. on weekdays. Its peak transmission charge is more than four times the off-peak one, so it rewards homes that can move their use. Rate 5, for electric heat, closed to new customers in December 2006. The tariff booklet is Eversource’s rate summary.

Outages

A typical customer here went 217 minutes without power in 2025, with storms counted; the US figure is 269 minutes. The record high is 3,117 minutes in 2020: that was the year of Tropical Storm Isaias, after which the regulator found Eversource had failed to meet standards of acceptable performance.

Rooftop solar

At the end of 2025, net metering covered 90,904 Eversource homes, or 7.6% of its households.

EIA-861 Net Metering: homes with solar panels on a net-metering arrangement at the end of each year.

The grid behind those lines is the New England mix, and the tool above turns your kWh into emissions using the EPA eGRID factor in GreenCalculus MasterBrain.

Where it serves

Eversource covers most of the state. United Illuminating serves the area around New Haven and Bridgeport and has its own rates, and some towns have municipal utilities. Your bill names your company.

EIA-861 Service Territory, 2025. A county on the list may be served only in part, and other utilities may serve the same county.

How we worked this out

Today’s figures are the filed Rate 1 lines added together; none is estimated. They reconcile with Eversource’s rate summary and with the 11.58¢ standard service price the Consumer Counsel published. That page lists the delivery congestion credit as 2.061¢, where the Rate 1 tariff prints 1.911¢. We use the tariff, because that is what bills are calculated from.

The headline 26.9¢ from the federal series is a different measure: revenue over kWh for the 12 months to August 2026. It includes months before the credit began and homes with suppliers, so it will not equal the price on a bill today. The 1.82¢ for June 2024 is derived by us, from the July 2024 charges less the increases published for that month.

Frequently asked questions

Download the data

• Eversource Connecticut, every month (CSV)
• All 40 utilities, latest figures (CSV)
• Citable archive on Zenodo (DOI 10.5281/zenodo.24071582): all 40 utilities, with field descriptions
• Dataset, code and history on GitHub

How to cite this page

@dataset{say2026eversourceconnect,
  author    = {Say, Jeremiah},
  title     = {Eversource Connecticut electricity rates: monthly residential price since 1990},
  year      = {2026},
  publisher = {GreenCalculus},
  doi       = {10.5281/zenodo.24071582},
  url       = {https://doi.org/10.5281/zenodo.24071582}
}

Version history

• 1.0 (November 2026): launched on the Rate 1 tariff effective 1 July 2026.