Idaho consistently ranks as the United States state with the cheapest residential electricity, boasting average rates hovering around 12.35 cents per kilowatt-hour, which sits roughly one-third below the national average. Idaho's remarkably affordable power rates are driven primarily by its abundant, low-cost hydroelectric generation capacity originating from regional river systems, alongside efficient state utility management. Other states known for low electricity prices include Utah, Oklahoma, and Louisiana, where access to domestic natural gas, wind power, or coal keeps generation costs down.