Connecticut power prices fall while data center demand lifts costs elsewhere

Connecticut breaks the national pattern

Connecticut’s average residential electricity price fell 10.6% over the year ending June 2026, while the comparable United States average increased 5% during the same federal reporting period for households.

Elsewhere, expanding data centers raise electricity demand, while fuel expenses and grid investments add separate financial pressures for customers in other power markets during 2026 planning and rate reviews.

Rate ranking moves lower

Connecticut ranked fifth-highest among states and the District of Columbia for residential electricity prices in June 2025, then stood 12th one year later in federal monthly price data.

Connecticut averaged 24.32 cents per kilowatt-hour in June 2026, compared with a United States residential electricity figure of 18.34 cents for each kilowatt-hour during the same monthly reporting period.

Electric bills reflect public benefits credit

Connecticut’s public benefits category funds state energy programs, customer assistance, and power contracts, including nuclear agreements, through charges and credits appearing on electric bills across utility service territories.

Starting May 1, 2026, the public benefits category became a credit, while approved adjustments reduced average monthly bills by about $30 for Eversource and $34 for United Illuminating.

Millstone contract changes the math

The Millstone power purchase agreement uses a fixed contract price near five cents per kilowatt-hour, which can cost customers more when wholesale market prices remain below that level.

When wholesale electricity values rise above the fixed Millstone contract price, resale revenues can reduce customer costs and contribute credits through Connecticut’s public benefits calculations on monthly bills.

Senate Bill 4 added relief

Public Act 25-173, enacted from Senate Bill 4 in 2025, authorized up to $300 million in bonding and changes moving selected public benefits costs away from electric bills.

A second $145 million allocation extended public benefits reductions through April 2027, keeping part of the 2026 bill relief in place for Connecticut utility customers during that cycle.

Candidates differ on durability

Governor Ned Lamont has linked lower 2026 electric bills to nuclear contracts, public benefits reductions, and legislation enacted in 2025 that shifted selected costs away from customer accounts.

State Senator Ryan Fazio has described much of the 2026 relief as temporary, arguing that many savings tied to the public benefits category may diminish as those credits change.

Fun fact: In 2024, U.S. power prices averaged 16.48 cents per kWh for homes nationwide, compared with 8.13 cents for industrial customers.

Regulators face limited control

The Connecticut Public Utilities Regulatory Authority oversees Eversource and United Illuminating distribution charges and other state-jurisdictional components, while household electricity bills also include separate supply and transmission costs.

State regulators directly oversee distribution pricing and certain bill components, while the Federal Energy Regulatory Commission regulates transmission rates, and wholesale markets influence regional electricity supply expenses for consumers.

Little-known fact: U.S. data centers can use 10 to 50 times more electricity per floor area than a typical commercial office building.

Eversource request sets next test

Eversource filed a formal rate case seeking about $451 million in additional annual base distribution revenue, with proposed new rates beginning in July 2027 if regulators approve them.

The filing remains under regulatory review, while electricity supply costs in New England can rise when cold weather increases heating demand and strains natural gas pipelines during winter.

Winter fuel risk remains

New England relies heavily on natural gas generation, and pipeline constraints can raise regional fuel and electricity prices during cold periods when heating demand increases each winter.

Connecticut’s fixed-price nuclear contracts reduce exposure to some wholesale market swings, but regional winter reliability still depends on fuel availability, generation resources, and transmission conditions during cold periods.

Data centers reshape demand elsewhere

Projections published in 2026 indicate data centers will drive about half of United States electricity demand growth through 2030, with artificial intelligence contributing strongly to continued national expansion.

Because data center demand is concentrated geographically, grid planners are evaluating generation, transmission, interconnection, and cost allocation rules for large loads in affected power markets across those areas.

Regional grid faces rising demand

Within the PJM Interconnection region, rapid growth from data centers and other large loads is tightening the balance between electricity demand and available generation, creating reliability and affordability concerns.

Higher capacity prices can raise household and business bills, while transmission projects and new generation follow separate cost allocation and regulatory processes that may affect future electricity charges.

Budget treatment remains disputed

State Senator Ryan Fazio has proposed retiring some public benefits programs or moving discretionary initiatives into the general fund, where they would remain subject to spending limits instead.

Governor Ned Lamont argues that moving public benefits expenses into tax-supported accounts shifts rather than removes costs, while lawmakers used state bonding to provide limited bill relief for customers.

Want the latest before everyone else? Check out how Virginia gave more households a path to solar savings as shared capacity expanded statewide.

New nuclear contracts remain possible

Connecticut’s existing Millstone and Seabrook nuclear contracts are scheduled to expire in 2029, while the state began seeking proposals in 2026 for possible new power agreements with generators.

Any new contract would require further approval, including review of bids, pricing, and eligibility, before terms could affect future customer costs in Connecticut through later monthly electric bills.

Want to read more about the latest developments? Check out how Kentucky county became the first in the state to permanently ban data centers.

Do you think Connecticut’s falling power prices matter more, or do rising data center costs elsewhere point to bigger pressure ahead? Share your thoughts.

This slideshow was made with AI assistance and human editing.

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