Connecticut ElectricityRates and Electric Suppliers

Understand rates, suppliers, local delivery and plan details before comparing electricity options in Connecticut.

STATE CT

GUIDE Rates + market

COMPARE ZIP + usage

SECTIONS 8

Connecticut electricity rates should be compared as a complete service decision, not as a single advertised number. The useful questions are who delivers power at the address, whether supply choice is available, what the current default supply option costs, and how a competing contract behaves at the household’s normal usage.

Connecticut electricity shopping centers on two investor-owned utilities, Eversource and United Illuminating (UI), and the Standard Service supply available to eligible customers. Third-party suppliers can offer alternatives, but Connecticut has specific residential consumer protections, including restrictions on variable-rate third-party supply. Start with the utility and current Standard Service price.

LOCATION CHANGES THE MATH

Start with your Connecticut ZIP code

Rates, utilities and available plans can change by service area. Use your ZIP code as the first local filter.

Electricity market in Connecticut

Connecticut customers served by Eversource or United Illuminating can remain on utility Standard Service for generation supply or choose a licensed third-party electric supplier. The delivery utility does not change when the supplier changes. Municipal electric systems operate separately, so the competitive supplier model should not be assumed for every Connecticut address. The Public Utilities Regulatory Authority (PURA) oversees licensed suppliers.

Connecticut choice applies to the supply portion of service; Eversource or UI still delivers the electricity. Customers can stay on Standard Service or select a licensed supplier where eligible. Because residential supplier rules are more prescriptive than in some states, the exact contract type and current PURA requirements matter in addition to the advertised price.

How electricity choice works in Connecticut

Standard Service is the default generation supply for customers who do not choose a third-party supplier. PURA maintains consumer information and Connecticut’s official generation supply comparison resources through EnergizeCT. A competitive supplier changes the generation supply contract, while Eversource or United Illuminating continues to deliver electricity and charge the same regulated delivery rates applicable to that customer.

PURA regulates Connecticut utilities and electric suppliers, while EnergizeCT provides consumer-facing rate information. A shopper should identify Eversource or UI, compare the current Standard Service supply price with licensed offers and verify that the proposed product complies with current residential rules before authorizing a switch.

Utilities and electricity providers in Connecticut

Eversource and United Illuminating are the two major investor-owned electric distribution companies for Connecticut residential customers, with separate service territories. Municipal electric utilities serve additional communities under different arrangements. Because delivery territory controls the Standard Service benchmark and supplier eligibility, the utility shown on the bill should be confirmed before comparing any alternative supply offer.

Eversource serves most of Connecticut and UI serves the New Haven and Bridgeport region and surrounding communities. Their delivery charges and Standard Service prices can differ. Supplier offers are tied to the customer’s utility territory, so the utility name is essential even though the customer is comparing the supply company.

Electricity rates and what affects your bill

Connecticut bills separate electricity supply from delivery. Standard Service generation rates are reset on a scheduled basis, while third-party supplier prices are governed by their contracts and state consumer rules. Delivery charges do not become lower merely because a customer changes supplier. Compare only the supply component, then review monthly charges, contract length, renewal conditions and whether the quoted price covers the full stated term.

Connecticut Standard Service rates are periodically reset, and winter or summer usage can materially change the dollar impact of a per-kWh difference. Third-party offers should be annualized with real household use and checked for monthly charges or other terms. Delivery charges remain with Eversource or UI and should not be counted as supplier savings.

Fixed, variable and renewable electricity plans

Residential supplier rules in Connecticut are more restrictive than in some other competitive states. Variable rates for residential third-party supply have been prohibited, and consumer protections limit certain cancellation charges. Even so, customers should review automatic renewal terms and future pricing carefully. Renewable offers should state what environmental product is being provided. Standard Service remains available as the default alternative for eligible utility customers.

Residential third-party supply in Connecticut is subject to consumer rules that make contract structure especially important. Fixed-price terms should be evaluated against the next Standard Service period, and renewable offers should explain their environmental attributes. Do not assume a product type is beneficial without comparing the full authorized terms.

A Connecticut comparison file should include the current Eversource or UI Standard Service price, the supplier offer, its fixed term, any monthly fee and the enrollment confirmation. Note when the utility expects the supply change to appear. That record makes it easier to verify billing and to reassess the contract before the term ends.

How to compare and choose a Connecticut electricity plan

Use the current Standard Service supply rate as the benchmark and compare supplier offers through the official Connecticut rate resources. Verify the supplier’s license, fixed price, contract end date, renewal method and any additional product. Because delivery charges remain with the utility, evaluate savings using the supply portion rather than the total bill. Recheck the comparison when Standard Service or the supplier contract is due to change.

A Connecticut move can switch the account between Eversource and UI territories, so the old supplier comparison may no longer apply. Set up the new utility account first and then review eligible supply choices. Regardless of supplier, report outages and delivery problems to the local utility responsible for the new address.

Moving, switching and consumer considerations

A move can shift a customer between Eversource, United Illuminating or a municipal electric territory. That can change the available supply options, so establish delivery service and confirm the new utility before arranging competitive supply. For a switch at the same address, confirm the contract end date and effective switch timing. Outages and distribution emergencies continue to be handled by the delivery utility, not the third-party supplier.

Connecticut customers can use our guides to provider versus utility roles, how variable pricing works generally and renewable electricity products while applying Connecticut’s stricter residential rules.

Frequently asked questions

Do Connecticut customers have to choose a third-party electric supplier?

No. Eligible Eversource and United Illuminating customers can remain on utility Standard Service for generation supply.

Where can I compare Connecticut supplier rates?

PURA directs consumers to Connecticut’s official generation supply comparison resources on EnergizeCT.

Does changing supplier reduce delivery charges?

No. Delivery charges are set for the local utility territory and remain applicable regardless of the generation supplier.

Can every Connecticut address use the same supplier choices?

No. Supplier choice depends on the delivery territory, and municipal electric systems operate under different arrangements.