Electricity prices in the United States vary dramatically from state to state, with the cheapest states paying less than 10 cents per kilowatt-hour (kWh) and the most expensive exceeding 30 cents — a more than threefold difference driven by factors including fuel sources, regulatory frameworks, climate, and infrastructure investment.

The Cheapest States for Electricity

States with access to abundant hydroelectric power consistently rank among the cheapest in the country. Louisiana, Oklahoma, Idaho and Washington State regularly record some of the lowest residential electricity prices in the US, with rates in the 9–12 cents per kWh range. Louisiana benefits from low-cost natural gas, while the Pacific Northwest states leverage their extensive hydropower infrastructure.

North Dakota, Wyoming and Arkansas also typically rank in the bottom quartile for electricity prices, benefiting from low fuel costs and relatively modest grid infrastructure investment requirements.

The Most Expensive States

Hawaii consistently records the highest electricity prices in the US, with residential rates regularly exceeding 40 cents per kWh — a reflection of the state’s island geography and its historical reliance on imported oil for power generation. However, Hawaii’s aggressive solar and storage buildout is beginning to bring prices down from peak levels.

California, Connecticut, Massachusetts, New York and Rhode Island are among the most expensive mainland states, with residential rates in the 22–30+ cents per kWh range. These states combine high demand, significant grid infrastructure costs, aggressive renewable energy mandates, and in some cases challenging regulatory environments that increase the cost of power delivery.

Why Do Prices Vary So Much?

Several factors drive the wide variation in US electricity prices. The primary fuel source for electricity generation is the biggest variable — states with access to cheap natural gas, coal, or hydro power generally have lower prices than those reliant on oil or costly renewables. Regulatory and rate-setting frameworks also differ significantly, with regulated monopoly utilities in many states and more competitive markets in others.

Grid infrastructure investment — the cost of transmission and distribution networks — is another major factor, particularly in states with ageing infrastructure that requires significant capital investment to maintain reliability.

What This Means for Households

For households in high-price states, the economic case for rooftop solar payback period and energy efficiency improvements is significantly stronger than for those in low-price states. A 30 cents/kWh electricity price makes a solar investment pay back in roughly half the time compared to a 15 cents/kWh market.

Check our regularly updated state-by-state electricity price tracker for the latest figures in your area.