Energy guide
Why energy prices vary by state
How to read the annual state-rate gap without treating it as a current utility quote or a causal explanation.
Annual residential electricity-rate averages differ substantially across states
In the U.S. Energy Information Administration's 2025 annual-frequency retail-sales series, residential average revenue per kWh ranges from 11.81¢ in North Dakota to 40.59¢ in Hawaii, a 3.4× spread. These are annual statewide benchmarks, not a current utility quote, household bill, or test of what caused a state's average.
What the annual benchmark shows
The annual statewide residential benchmark differs sharply across states; it does not, by itself, identify the cause of that difference.
- 11.81¢
- cheapest, North Dakota
- 40.59¢
- priciest, Hawaii
- 3.4×
- cheapest-to-priciest gap
- 2025
- annual data year
Source: EIA retail-sales API, 2025 annual-frequency residential averages.
The 6 most expensive states for residential electricity (2025)
Average residential price, cents per kWh.
- Hawaii
Hawaii
41
- California
California
33
- Massachusetts
Massachusetts
30
- Rhode Island
Rhode Island
29
- Connecticut
Connecticut
29
- Maine
Maine
28
What this shows These are the six highest annual statewide residential averages in the stored 2025 EIA period. The ranking does not determine why each state appears here.
What This Rate Measures
The EIA retail-sales API series used here reports annual-frequency statewide residential average revenue per kilowatt-hour. It is useful for comparing broad, same-period benchmarks. It is not a posted tariff, an individual household bill, or a measure of generation cost.
Many conditions may be relevant to a utility's retail rate, but this dataset does not separate or weigh them. RateWatt therefore does not attribute a state's ranking to fuel mix, geography, policy, market structure, or a single utility decision. See a state's generation context as separate descriptive information, not as a causal explanation of the ranking.
Compare Like With Like
Use the same year and customer sector when comparing states. A statewide residential average should not be compared directly with a commercial or industrial average, a live supplier offer, or a bill that includes a different period or usage pattern.
For a Local Bill, Start With Your Utility
Your utility's tariff and bill are the authoritative sources for a current household cost. Check the plan's energy charge, fixed fees, riders, taxes, billing period, and your actual kWh before using a statewide benchmark in a relocation or budget decision.
The Highest and Lowest Annual Averages
The ranking identifies the highest and lowest annual statewide averages in the selected EIA year. It does not establish that a state will hold the same position next year, that every customer there pays that amount, or why the position differs.
Browse RateWatt's state pages for the current stored benchmark and price trends to compare annual changes.
Frequently Asked Questions
Why is electricity expensive in some states?
RateWatt's annual EIA state averages show that prices differ substantially, but they do not identify a single cause for any state. Utility tariffs, customer mix, fuel contracts, transmission, weather, policy, and timing can all matter. Consult a utility or state regulator for a current local explanation.
Why is electricity cheaper in some states?
A lower annual statewide average is a descriptive benchmark, not proof of why that state is lower. The figure combines utilities and customer bills across a full year; it is not a current utility offer or a causal comparison.
Does renewable energy make electricity more or less expensive?
This page does not use its state-average rate data to estimate that effect. Generation cost studies and retail electricity bills answer different questions, and a state average alone cannot attribute a retail rate to one energy source.
Do deregulated states have lower electricity prices?
The EIA annual averages on this page describe rates; they do not establish whether retail-market structure caused a state's result. Compare the specific plan, fees, usage assumptions, and utility territory before choosing service.
Can this page predict my next electricity bill?
No. It reports annual statewide residential averages. Your bill depends on your utility, tariff, meter period, usage, fixed charges, taxes, and any supplier plan.
Will electricity prices keep going up?
This page is not a forecast. Use a utility tariff, regulator filing, or a current official forecast for a forward-looking question.
Sources
- U.S. EIA retail-sales API, annual-frequency state and sector observations.
- U.S. EIA, average retail electricity price method and interpretation.
This content is for informational purposes only and does not constitute financial advice.
How to use RateWatt with the source boundary intact
Start with how electricity rates are built to understand the difference between a statewide annual benchmark and a utility tariff, then use state-level rate data to compare stored annual averages. The rate-structure guide explains common tariff structures. For state-by-state comparison, the cheapest-states guide and this annual-rate guide report where statewide averages sit without assigning a cause. The renewable cost comparison covers industry LCOE estimates separately from RateWatt's EIA-backed data. Neither a generation mix nor an annual statewide average is an individual utility quote.
Trace it to your state
Use annual state benchmarks as context, then check your own utility tariff.
- See every state ranked cheapest to most expensive. Rankings
- Open your state’s profile for rate and generation mix. All states
- Estimate your own bill from your kWh. Cost calculator
Rates are EIA state averages, your utility, plan, and usage set your actual bill.
The live rate figures on this page are pulled directly from the EIA database. Broader context and explanatory figures in the guide text come from public EIA and industry reporting, not necessarily this portal's live database. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2025.