How KU’s plans work
RS (Residential Service). One price per kWh at every hour, all year: 10.9¢. Shifting use to other hours changes nothing on this plan; using less is the only lever. Fixed charge: $17.75 a month.
RTOD-Energy (Residential Time-of-Day Energy). Peak 2 pm–6 pm on July weekdays; 4 of 24 hours carry the top price of 23.4¢. The cheapest July weekday hour costs 7.3¢, so moving 1 kWh out of the top hours saves 16.1¢. January weekdays range from 7.3¢ to 23.4¢. Weekends differ: off-peak all day. Fixed charge: $17.75 a month.
Prices on this page are all-in per kWh, before taxes: base rates, supply and every per-kWh rider in the utility’s current tariff sheets. Your bill shows them as separate lines, and riders can change between tariff revisions.
As a cross-check, KU billed its residential customers an average of 11.90¢ per kWh in 2025 (revenue ÷ sales, EIA-861). A plan taken from URDB is shown only if its all-in price is consistent with that figure, adjusted for Kentucky’s price change since.