HomeWattCost

Louisville Gas and Electric (LG&E) rates

Peak hours on LG&E RTOD-Energy: 2 pm–6 pm, on weekdays in summer. LG&E has 2 residential plans modeled here. For a typical Kentucky home using 1,102 kWh a month, the cheapest plan open to any household is RTOD-Energy, at about $140 a month.

Investor-owned 388,146 residential customers (EIA-861, 2025) Tariffs checked November 12, 2026

Typical all-in priceRTOD-Energy

12.7¢/kWh
RS$141/mo
RTOD-Energy$140/mo

Residential plans

PlanTypeFixed/moJuly pricesJanuary pricesJuly weekday windows
RS
Residential Service
Flat $14.80 11.5¢ all hours 11.5¢ all hours None
RTOD-Energy
Residential Time-of-Day Energy
Time-of-use $14.80 Off-peak 9.3¢ · Peak 19.2¢ Off-peak 9.3¢ · Peak 19.2¢ Peak 2 pm–6 pm

RTOD-Energy: price by hour

July weekday. Summer pricing Apr–Oct; winter Nov–Feb.

Off-peakPeak
9.3¢19.2¢9.3¢12a3a6a9a12p3p6p9p12a

LG&E peak and off-peak hours

What are LG&E’s peak hours?

It depends on the plan. RTOD-Energy: Peak 2 pm–6 pm, on weekdays, in summer (in winter: Peak 6 am–10 am, Peak 6 pm–10 pm); weekends: off-peak all day. Hours are local clock time.

When is electricity cheapest on LG&E?

On summer weekdays the lowest price is RTOD-Energy: 6 pm–2 pm next day at 9.3¢/kWh, against 19.2¢ at the peak. RS charges the same price at every hour.

Which LG&E plan is cheapest?

For a typical Kentucky home using 1,102 kWh a month, RTOD-Energy at about $140 a month (12.7¢/kWh all-in, before taxes). With an EV charged at its cheapest hour, RTOD-Energy gives the lowest total.

Peak and off-peak hours of every utility

Charging an EV on LG&E

1,000 miles a month in a Tesla Model Y Long Range AWD (275 kWh from the wall, EPA 27.5 kWh/100 mi) at 7.2 kW, added to a typical Kentucky home’s use, on each plan’s cheapest start hour versus plugging in at 6 pm. Averaged over the year.

PlanBest startCharging, best startCharging from 6 pmWhole bill with EV
RSAny$32/mo$32/mo$173/mo
RTOD-Energy12 am$26/mo$32/mo$165/mo

With an EV charged at its best hour, the cheapest plan overall is RTOD-Energy. Compare plans on your own usage.

Cost to charge each EV on LG&E RTOD-Energy

1,000 miles a month at 7.2 kW, starting at 12 am, the plan’s cheapest hour, added to a typical Kentucky home’s bill. Full charge: the EPA range, at the plan’s lowest price (9.3¢/kWh). EPA efficiency, from the wall.

ModelkWh/100 mi1,000 mi a monthFull charge
Lucid Air Pure (2027)23.1$22/mo$9.03
Tesla Model Y Standard RWD (2026)24.3$23/mo$7.26
Tesla Model 3 Standard RWD (2026)24.3$23/mo$7.26
Toyota bZ (2027)25.5$24/mo$7.45
Tesla Model 3 Premium RWD (2027)26$24/mo$8.79
Hyundai Ioniq 6 RWD (2025)26$24/mo$8.28
Tesla Model S (2026)27.1$25/mo$10.34
Tesla Model Y Long Range AWD (2026)27.5$26/mo$8.37
Nissan Leaf 75 kWh (2026)27.8$26/mo$7.84
Chevrolet Bolt (2027)28.2$26/mo$6.88
BMW i4 eDrive40 (2026)28.5$27/mo$8.84
Kia EV3 Long Range FWD (2027)29$27/mo$8.67
Volvo EX30 Single Motor (2026)29.2$27/mo$7.10
Kia EV6 Long Range RWD (2027)29.6$28/mo$8.79
Volkswagen ID.4 (2026)29.8$28/mo$8.07
Hyundai Ioniq 5 RWD (2027)30$28/mo$8.88
Ford Mustang Mach-E RWD Extended Range (2026)30.7$29/mo$9.15
Chevrolet Equinox EV FWD (2027)31.1$29/mo$9.24
Tesla Model X (2026)32.2$30/mo$10.55
Chevrolet Blazer EV FWD (2027)32.3$30/mo$9.38
Honda Prologue FWD (2026)32.5$30/mo$9.32
Nissan Ariya FWD 87 kWh (2026)34.4$32/mo$9.26
Cadillac Lyriq RWD (2027)36.8$34/mo$11.17
Hyundai Ioniq 9 AWD (2027)38$35/mo$11.32
Kia EV9 Long Range RWD (2027)38$35/mo$10.79
Tesla Cybertruck AWD (2026)42.9$40/mo$12.98
Rivian R1S Premium (2027)42.9$40/mo$11.98
Rivian R1T Premium (2027)42.9$40/mo$11.98
Chevrolet Silverado EV Extended Range WT (2026)47.8$45/mo$18.87
Ford F-150 Lightning Extended Range (2025)47.9$45/mo$14.27

How LG&E’s plans work

RS (Residential Service). One price per kWh at every hour, all year: 11.5¢. Shifting use to other hours changes nothing on this plan; using less is the only lever. Fixed charge: $14.80 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 19.2¢. The cheapest July weekday hour costs 9.3¢, so moving 1 kWh out of the top hours saves 9.9¢. January weekdays range from 9.3¢ to 19.2¢. Weekends differ: off-peak all day. Fixed charge: $14.80 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, LG&E billed its residential customers an average of 12.42¢ 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.

Sources for each plan

PlanEffectiveSeasonsSource and status
RS
Transcribed from the utility’s tariff
October 29, 2026 Same pricing all year Checked November 3, 2026
LG&E P.S.C. Electric No. 14 tariff (Sheets 5-6 First Revision eff. 8/14/2026, others 2/16/2026, Case 2025-00114), Sheets 5, 83-93 · KY PSC Order on rehearing/reconsideration, Cases 2025-00113 & 2025-00114, Aug 14 2026 (Appendix B KU / Appendix C LG&E) · KY PSC press release 2/16/2026 (typical bill) · KY PSC FAC filings, LG&E 2026 (Form A Sept 2026 expense month, filed 10/19/2026, November 2026 billing cycle) · LG&E RAR report, Sept 2026 expense month (November 2026 billing cycle) · LG&E PGR report, Sept 2026 expense month (November 2026 billing cycle) · LG&E 2026 Electric Monthly Billing Adjustments (Nov-26, bills rendered from 10/29/2026)
RTOD-Energy
Transcribed from the utility’s tariff
October 29, 2026 Summer pricing Apr–Oct; winter Nov–Feb Checked November 3, 2026
LG&E P.S.C. Electric No. 14 tariff (Sheets 5-6 First Revision eff. 8/14/2026, others 2/16/2026, Case 2025-00114), Sheets 6-6.2, 83-93 · KY PSC Order on rehearing/reconsideration, Cases 2025-00113 & 2025-00114, Aug 14 2026 (Appendix B KU / Appendix C LG&E) · KY PSC FAC filings, LG&E 2026 (Form A Sept 2026 expense month, filed 10/19/2026, November 2026 billing cycle) · LG&E RAR report, Sept 2026 expense month (November 2026 billing cycle) · LG&E PGR report, Sept 2026 expense month (November 2026 billing cycle) · LG&E 2026 Electric Monthly Billing Adjustments (Nov-26, bills rendered from 10/29/2026)

Plans marked “Checked” were transcribed from the utility’s current tariff and rider sheets, all charges included, and are re-checked on the date shown in each file. Other plans come from the OpenEI U.S. Utility Rate Database (CC BY 4.0) and have not yet been checked line by line against the utility’s tariff. Always confirm the current rates on your utility’s website before switching plans.

Compare two LG&E plans

Cities served by LG&E

Cities of 100,000 or more whose center lies in LG&E’s service territory.

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