The spread in American electricity prices is one of the widest of any developed country, and the instinctive explanations are mostly wrong. It is not primarily about how much power costs to make. It is about fuel logistics, the geography of wires, who owns the utility, what the weather does to the network, and which obligations a state has decided to fund through the electricity bill rather than through taxes.
Six factors account for nearly all of it. Most states are a combination of several.
1. Whether the fuel has to travel
The single cheapest thing you can do with a power plant is build it next to its fuel. North Dakota and Wyoming burn lignite and coal in plants sited at the mine, which removes transport cost entirely, and transport is normally the largest component of delivered coal price. Oklahoma and Louisiana do the same thing with natural gas produced in state.
Hawaii is the opposite case and the reason it sits alone at the top of the table at 52.00¢. It burns imported petroleum, shipped across an ocean, on island grids with no interconnection to anywhere. When world oil prices move, Hawaii moves with them faster and further than any mainland state.
2. Whether the capital is already paid for
A power plant's cost falls into two buckets: the capital to build it and the fuel to run it. Once the capital is recovered, ratepayers pay only fuel, operations and maintenance. This is why old assets are cheap.
Idaho at 12.35¢ and the Pacific Northwest generally run on hydroelectric dams built decades ago, largely with federal money, whose construction cost has long since been recovered and whose fuel is free. Nothing in the American generation mix competes with that.
Utah at 12.96¢ and Missouri and Kentucky run on coal fleets that are nearly fully depreciated. They are cheap precisely because they are old, which is also why the advantage is finite. Those plants cannot run forever, and their replacements will carry full capital cost.
3. How many customers share the fixed costs
Poles, wires and substations cost roughly the same whether they serve four houses or four hundred. A state with few customers spread over a large area therefore pays more per customer for an identical network.
This is why South Dakota sits above North Dakota, Nebraska and Iowa despite similar generation, and why Maine pays New England prices without New England density. It also works in reverse: fast-growing Sun Belt states have held rates comparatively well partly because they keep adding customers to spread fixed costs across.
4. Who owns the utility
A regulated investor-owned utility earns an approved return on its rate base, typically somewhere near ten per cent. That return is a real cost to ratepayers and it compounds with every asset the utility builds.
Nebraska is the only state in the country with no investor-owned electric utility at all. Every customer is served by a public power district, a municipal system or a co-operative, so there is no return on equity in the price. Public power also borrows at tax-exempt municipal rates rather than corporate ones, which lowers the carrying cost of everything it builds.
The effect is visible within states as well as between them. Seattle City Light customers pay materially less than Puget Sound Energy customers a few miles away. SMUD and LADWP customers pay roughly half what some PG&E customers pay. The service is identical; the ownership is not.
5. What the weather does to the network
Two kinds of weather risk dominate, and both are expensive.
Wildfire. California at 33.25¢ is the clearest case in the country. Wholesale energy there is not unusually expensive; the state has enormous solar output, hydro, geothermal and a nuclear station. The cost is in everything wrapped around it. After utility equipment was found responsible for catastrophic fires, California's utilities began burying thousands of miles of distribution line, replacing conductors, installing weather stations and fast-trip protection, and expanding vegetation management enormously. They also pay wildfire insurance and contribute to a state fund. All of it recovers through rates and none of it generates a single additional kilowatt-hour.
Storms. Louisiana's generation is genuinely cheap, and its rate is held up by hurricane recovery. The state has repeatedly securitised restoration costs, issuing bonds against future ratepayer charges, so a Louisiana bill carries surcharges from several past hurricanes at once.
6. What the state decided to fund through the bill
Every state makes a choice about which public obligations to fund through electricity rates rather than through general taxation. Energy efficiency programmes, low-income discounts, renewable procurement, nuclear plant support, arrears forgiveness: all of these can sit on the bill.
Connecticut is the instructive example. Its public benefits charge rose steeply in 2024, driven by a long-term contract with a nuclear station and by recovery of pandemic-era arrears utilities had been ordered not to collect. Bills jumped, the politics turned severe, and when those specific items rolled off the charge fell back. Connecticut now shows a year-over-year decline while nearly every neighbour rose, which says more about the inflated base than about Connecticut becoming cheap.
The newest factor: capacity and data centres
A seventh driver has appeared recently and it explains most of the past year's movement in the eastern half of the country. Illinois rose 28.4% in a single year, and Ohio, Maryland, New Jersey, Pennsylvania and the District of Columbia all moved in the same direction at the same time.
These states share almost nothing except a wholesale market. What they have in common is PJM, and specifically its capacity market, which pays generators to be available rather than to produce. That auction cleared at a record price after data-centre demand grew faster than forecast, older plants retired, and new generation failed to connect quickly enough to replace them. The cost passed straight into default-service rates.
This is worth understanding properly because it is likely to keep mattering. How the capacity market works is a separate guide.
The map
Colour here is the rate as of May 2026. The national average is 18.44¢.
Residential electricity rates, May 2026
What this means if you are comparing states
Two cautions. First, a state average conceals within-state variation that is sometimes larger than the gap between states. New York is the clearest case: the difference between a Consolidated Edison customer in New York City and an upstate utility customer exceeds the difference between many entire states.
Second, the rate is only half of what you pay. Bills are rate multiplied by usage, and usage varies between states even more than price does. Alabama has a below-average rate and one of the highest bills in the country, because households there use far more. The bill comparison is the more useful table if what you care about is money rather than price.