Louisville Gas and Electric (LG&E) Rate Selection Guide
Louisville Gas and Electric Company (LG&E), a PPL Corporation subsidiary, delivers electric and natural gas service to roughly 638,000 customers across Louisville and central Kentucky. The utility is regulated by the Kentucky Public Service Commission and offers AMI-based My Meter access, Green Button data, and EDI billing for commercial and industrial customers.
Louisville Gas and Electric (LG&E) Rate Schedule Comparison
| Schedule | Type | Rate | Best For |
|---|---|---|---|
| General Service (GS) | commercial | Customer charge + energy ($/kWh) + demand where applicable (see tariff) | Small to mid-size commercial sites |
| Power Service (PS) | industrial | Customer charge + energy ($/kWh) + maximum-load/demand (kW/kVA) (see tariff) | Larger facilities with steady, high demand |
| Time-of-Day (TODS/TODP) | industrial | Time-differentiated energy + demand; lower off-peak energy (see tariff) | Facilities able to shift load to off-peak |
| Real Time Service (RTS) | industrial | Hourly market-indexed energy + demand/standby (see tariff) | Large, price-responsive industrial loads |
Market Overview
Kentucky is a fully regulated, vertically integrated market. LG&E is the exclusive provider of bundled electric and gas service in its territory; there is no competitive retail supplier choice. The Kentucky Public Service Commission sets all rates through tariff filings and rate cases.
Need to pull your actual usage data to compare rates? See the Louisville Gas and Electric (LG&E) Data Access Guide →
Current Rate Schedules
LG&E's commercial and industrial electric rates are set by the Kentucky Public Service Commission and published in the LG&E Electric Rates tariff book (effective April 2, 2026). C&I schedules generally combine a monthly customer/service charge, an energy charge per kWh, and a demand charge per kW or kVA, plus billing adjustments (fuel adjustment clause, DSM, environmental surcharge). Per-unit dollar amounts shown on LG&E's web examples reflect older approved rates, so current figures should be read from the tariff book.
Effective: April 2, 2026 · Full Tariff Book →
| Schedule | Type | Applicability | Structure | Rate |
|---|---|---|---|---|
| General Service (GS) | commercial | Small to mid-size commercial customers below the Power Service demand threshold. | Monthly customer/service charge plus an energy charge per kWh; demand charge applies above defined demand levels. See KPSC-approved tariff for current rates. | — |
| Power Service (PS) | industrial | Larger commercial and industrial customers with significant demand. | Customer charge, energy charge per kWh, and a maximum-load/demand charge. LG&E has proposed migrating PS demand billing from kW to kVA and to a time-differentiated 3-tier maximum load charge. See tariff for current values. | — |
| Time-of-Day Secondary (TODS) | industrial | C&I customers taking secondary-voltage service who can shift load to off-peak periods. | Time-differentiated energy and demand charges with reduced off-peak energy pricing. Refer to tariff for on/off-peak periods and rates. | — |
| Time-of-Day Primary (TODP) | industrial | Large C&I customers taking primary-voltage service. | Time-differentiated energy and demand charges at primary voltage with a primary-service discount. See tariff for current rates. | — |
| Real Time Service (RTS) | industrial | Very large industrial customers exposed to hourly market-based energy pricing. | Hourly market-indexed energy pricing plus demand/standby charges. See tariff for terms. | — |
Rate Recommendations by Use Case
Multi-site commercial portfolio billing automation
Automate invoice capture across many LG&E commercial accounts.
EDI 810 via Xebec eliminates manual bill entry and standardizes data across sites.
- Enroll all accounts through one Trading Partner Agreement
- Use 997 acknowledgments to confirm receipt
- Budget 4-6 weeks including testing
Industrial facility peak-demand reduction
Cut the demand-charge portion of large industrial bills.
Demand (kW/kVA) charges are a major cost driver; 15-minute interval data pinpoints peaks to shave.
- Pull My Meter or Green Button interval data to find peaks
- Evaluate the proposed kVA / 3-tier maximum-load change
- Consider Real Time Service if load is price-responsive
Energy consultant onboarding a C&I client
Get automated, authorized access to a client's usage and billing data.
Green Button Connect My Data provides OAuth-based interval and billing access without password sharing.
- Use a Green Button certified app or Nectar (docs.nectarclimate.com)
- Pull 12-24 months for a baseline
- Confirm the client can revoke access anytime
Load-flexible C&I site evaluating Time-of-Day
Decide whether shifting load off-peak lowers total cost.
Off-peak energy is priced lower on TOD schedules, rewarding load shifting.
- Model on/off-peak split with interval data
- Confirm voltage level (secondary vs primary)
- Re-check after any tariff update
Historical Rate Trends
LG&E adjusts rates through periodic KPSC rate cases. The most recent case (No. 2025-00114) was filed May 30, 2025 with rates effective on and after July 1, 2025; the KPSC issued its final order in February 2026.
July 1, 2025
Case No. 2025-00114 electric/gas rate adjustment; rates went into effect on and after July 1, 2025 pending the final order. The KPSC final order (February 2026) approved a 4.73% increase for the average residential electric customer (+$5.14/month, from $108.76 to $113.90); C&I schedules were adjusted under the same order.
+4.73% (avg residential)Overall trend: Rising, driven by infrastructure investment and generation costs.
Next expected change: To be determined by LG&E's next KPSC rate case filing.
Cost Optimization Strategies
Because LG&E C&I bills are demand-driven, the largest savings come from managing peak demand, choosing the right schedule for the facility's voltage and load profile, and shifting flexible load to off-peak periods.
Right-size the rate schedule
For: All C&I customers
Compare GS vs. Power Service vs. Time-of-Day options against the facility's actual demand and voltage level using My Meter interval data and the business rate comparison tool.
Peak demand management
For: Demand-billed customers
Use 15-minute My Meter data to identify and shave demand peaks; staggering equipment startup reduces the billed maximum-load (kW/kVA) charge.
Off-peak load shifting on Time-of-Day rates
For: Load-flexible C&I customers
Shift discretionary load to off-peak windows on TODS/TODP to capture lower off-peak energy pricing.
Demand response participation
For: Facilities with 200+ kW demand
Enroll 200+ kW facilities in Business Demand Response to earn incentives for curtailing during dispatch events.
To implement these strategies, you need your 15-minute interval data. Learn how to download Louisville Gas and Electric (LG&E) interval data →
Frequently Asked Questions
How can a commercial or industrial customer get 15-minute interval data from LG&E?▾
C&I customers with advanced meters access 15-minute interval data through the My Meter dashboard in My Account, and can export it via Green Button Download My Data (XML). Facilities with 200+ kW demand can enroll in Business Demand Response for 5-minute real-time interval data through a dedicated portal.
Does LG&E offer an automated API for third-party energy managers?▾
LG&E does not publish a dedicated public developer API. Automated third-party access is delivered through Green Button Connect My Data (ESPI / OAuth 2.0) and through Nectar's API (docs.nectarclimate.com). Both require customer authorization and are revocable at any time.
How does a service provider receive automated billing data for many C&I accounts?▾
Service providers enroll as an EDI trading partner through LG&E's partner Xebec Data, obtain a Letter of Authorization from each customer, complete testing, and then receive automated ANSI X12 810 invoices over SFTP or a VAN, responding with 997 acknowledgments.
What does EDI enrollment involve and how long does it take?▾
Enrollment includes completing the Account List Form and Trading Partner Agreement with Xebec, configuring your system for 810/997 transactions, and 2-3 billing cycles of parallel testing. End-to-end go-live typically takes about 4-6 weeks.
Which commercial and industrial electric rate schedules does LG&E offer?▾
LG&E's C&I electric schedules include General Service (GS), Power Service (PS), Time-of-Day Secondary (TODS), Time-of-Day Primary (TODP), and Real Time Service (RTS). Most C&I rates combine an energy charge (per kWh) with a demand charge (per kW or kVA). Exact figures are set in the KPSC-approved electric tariff.
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