Your Guide to Eversource CT Electricity Rates and Market Choices
| Rate period | Standard service rate |
|---|---|
| July 2026 – December 2026 | 11.577¢/kWh |
| January 2026 – June 2026 | 12.641¢/kWh |
| July 2025 – December 2025 | 9.74¢/kWh |
Connecticut households can buy their electricity supply from Eversource, at the standard service rate, or from a licensed competitive supplier. Delivery is the same either way. This page explains how Eversource sets its rate, why it can move sharply twice a year, how supplier offers compare, and how customers have responded over time. For today’s numbers, see the Eversource CT page.
In early 2023 the gap between the two was unusually wide. Eversource’s rate for January–June 2023 was 24.17¢/kWh, while customers with competitive suppliers paid 13.78¢/kWh on average. For a home using 700 kWh a month, that difference came to about $436 over the six months. The gap closed when Eversource’s rate fell in July 2023.
How Eversource sets its supply rate
Your bill has two parts: delivery, set by PURA through rate cases, and supply. Supply is the part you can buy from Eversource or from a competitive supplier.
Each winning supplier takes on the whole job for its slice of load: energy, reserves, and every charge from ISO New England, the regional grid operator. Eversource passes the cost through to customers without a markup. It files each new rate with PURA about six weeks before it takes effect, and posts the bids from each auction, with bidder names removed, about three months later.
Because each period is bought over about a year, the rate reflects wholesale prices from months earlier. The chart below shows every auction since 2021. Supply for January–June 2023 was bought between April and October 2022, when winning prices reached $292 per MWh (29.2¢/kWh). That is why the rate for that period was 24.17¢/kWh, even though wholesale prices had started falling by the time it took effect.
Share of each month’s supply already bought, by auction, and the average price locked in
July 2022 to December 2027 · Eversource standard service procurement results · as of October 30, 2026
For January–June 2027, Eversource has already bought 80% of its supply. Our January 2027 analysis walks through what those purchases cost, the bid day that fell during Winter Storm Fern, and what is still unknown.
What the auction schedule means for the rate
- The rate lags the market in both directions. Buying over a year smooths out short spikes. It also means the rate stays high for a while after wholesale prices fall, as in 2023, and stays low for a while after they rise.
- The changes are known in advance. Eversource announces each new rate about six weeks before it takes effect, and most of the supply behind it has been bought months earlier. The auction results give an early read on where the rate is heading.
- Customers can move between Eversource and suppliers. Eversource has to charge the auction-based rate for the whole period. Customers can leave standard service for a supplier, or return to it, during the period.
Supplier offers and how they compare
Competitive suppliers set their prices from today’s wholesale market for the months ahead. Eversource’s rate comes from auctions held over the past year. So when wholesale prices are falling, supplier offers tend to come in below the standard service rate, and when they are rising, offers tend to sit above it.
Standard service and supplier offers today
| Service type | Current rate (¢/kWh) | Contract length | Rate changes |
|---|---|---|---|
| Eversource standard service | 11.57¢ | No contract | Changes twice yearly (Jan/July) |
| Lowest competitive offer Major Energy | 13.75¢ | 12 months | Fixed for contract duration |
| Average competitive offer | 15.33¢ | 12 months | Fixed for contract duration |
The 2023 example shows the first case: as wholesale prices fell, households with competitive suppliers paid 13.78¢/kWh on average while standard service was 24.17¢/kWh. Today the lowest offer we track is 13.75¢/kWh, 2.18¢/kWh above the standard service rate.
The Energize CT rate board is the state’s official list of supplier offers. It shows every offer in the same format and handles enrollment. Our Eversource CT page uses the same rate board data and adds daily history.
The chart below shows today’s offers by contract length. Each dot is one offer; the dashed line is Eversource’s standard service rate.
Current offers by contract length, against Eversource’s standard service rate
17 offers from 6 suppliers · EnergizeCT Rate Board · October 30, 2026
How supplier prices move over time
The chart below tracks two numbers from the rate board each day:
- The lighter line is the average 12-month fixed offer, a broad read on what suppliers expect wholesale power to cost over the next year.
- The darker line is the lowest offer available, the most aggressive price in the market.
Lowest and average 12-month offer against Eversource’s standard service rate, April to October 2026
Daily rateboard snapshots · as of October 30, 2026
The two lines move faster than the standard service rate, which only changes twice a year. In 2023, supplier offers dropped with wholesale prices while Eversource’s rate still reflected purchases made in 2022 (see the auction chart above). The same lag works the other way when wholesale prices rise.
How many Eversource customers shop
The chart below shows the share of Eversource residential customers with a competitive supplier.
Share of residential customers with a competitive supplier
January 2022 to August 2026 · Eversource monthly filings
Shopping rose sharply when the gap opened in early 2023. Between November 2022 and April 2023, the number of residential customers with a competitive supplier rose from about 95,000 to about 233,000, roughly two and a half times. It kept climbing to a peak of about 273,000 in May 2024 (23% of residential customers), then declined as Eversource’s rate came down. By August 2026 it was about 173,000, or 14%.
What the shopping numbers show
- Large price gaps move customers. The jump in early 2023 followed a gap of about 10¢/kWh. Smaller gaps of 1–2¢/kWh have not produced similar shifts.
- Customers move back. Shopping has declined since mid-2024 as the standard service rate came down, so switching is not a one-way move.
- More customers shop than before 2023. Even after the decline, about 173,000 households had a competitive supplier in August 2026, against about 95,000 in November 2022.
Which suppliers serve Eversource customers
The chart below shows residential customer counts by supplier over time, from Eversource’s monthly filings. The four largest suppliers today are drawn in color; every other supplier is folded into the grey band.
Residential customers by supplier
January 2023 to August 2026 · Eversource monthly filings
How Connecticut’s supplier market works
- Licensing: competitive suppliers must be licensed by PURA. The rate board FAQs cover the consumer protection rules.
- Standard offer format: the Energize CT rate board lists every offer in the same format.
- Moving between options: customers can switch suppliers or return to standard service; delivery does not change.
Where to find the live numbers
- Eversource CT page: the current rate, supplier offers, and history, updated daily.
- Energize CT rate board: the state’s official offer list.
- State summaries: how Connecticut compares with other states.
- Current offers: supplier offers across every market we track.
Frequently Asked Questions
What is the current Eversource CT standard service rate?
Eversource CT’s standard service rate is 11.57¢/kWh as of October 30, 2026.
How does Eversource set its electricity supply rates?
Eversource buys power through multiple competitive wholesale auctions. The weighted-average price of the winning bids, plus a yearly true-up that settles any past over- or under-collection, becomes the standard service rate all default-service customers pay until the next reset.
What will Eversource’s rate be in January 2027?
Grid Shopper estimates Eversource CT’s January 1, 2027 residential standard service rate at about 15.2¢/kWh, within a range of 14.6¢ to 15.6¢, based on the 80% of January–June 2027 supply already bought at auction. Eversource files the actual rate with PURA in mid-November.
When do Eversource CT supply rates change?
On January 1 and July 1 each year. Eversource files each new rate with PURA about six weeks earlier, in mid-November and mid-May.
Are competitive suppliers cheaper than Eversource right now?
Not at the moment. The lowest offer we track is 13.75¢/kWh, at or above Eversource’s standard service rate of 11.57¢/kWh.
Version history
- October 17, 2026: rewrote the page to describe and explain, without sales language; corrected the 2022–2024 shopping figures; added Grid Shopper’s January 2027 estimate and the yearly true-up to how the rate is set.
- May 15, 2026: Eversource announced a July–December 2026 rate of 11.577¢/kWh, 8% below the 12.641¢/kWh January–June 2026 rate and about 19% above the 9.74¢/kWh July–December 2025 rate.