Kentucky Solar Guide 2026
Everything Kentucky homeowners need to know: costs, incentives, net metering policy, and what makes this state unique for solar.
Quick answer
Kentucky solar economics depend mainly on 4.6 average peak sun hours, an estimated $2.8/W installed cost, 11.0¢/kWh electricity, and the state's current net-metering rules.
Reviewed 2026-07-26
- Best for
- Kentucky homeowners comparing solar costs, incentives, and payback assumptions.
- Inputs needed
- annual kWh usage, utility rate, installed $/W, net-metering policy
- Formula used
- Typical production = system kW × peak sun hours × 365.
- Source checked
- state incentive data, utility tariff checks, Wattcrunch price benchmarks
Key fact about Kentucky solar
Kentucky has full retail net metering but low electricity rates (~$0.11/kWh) and limited state incentives make payback long. The coal-heavy grid also means solar provides significant carbon benefits in KY.
Peak sun hours
4.6
hrs/day avg
Avg electricity rate
11.0¢
per kWh
Median install cost
$2.8/W
before incentives
Typical payback
13 yrs
8 kW system, avg usage
Typical 8 kW system in Kentucky
Annual production
13,432 kWh
Year-1 savings
$1,478
System cost (est.)
$22,400
No federal tax credit — Section 25D expired December 31, 2025.
Kentucky Net Metering Policy
Full retail net metering (KRS 278.465)
Kentucky requires full retail net metering under state law. LG&E, KU, and Duke Energy Kentucky must credit exports at retail rate. Monthly excess rolls forward for 12 months.
Kentucky Solar Incentives
Available in addition to any utility rebates. Federal 25D credit is $0 for homeowner-owned systems from 2026.
- ✓Property tax exemption
- ✓No current state income tax credit for solar
Top Utilities in Kentucky
Interconnection timeline: 4–8 weeks
State-specific decision guide
What to verify before signing a Kentucky solar quote
In Kentucky, the financial result depends on more than sunshine or the headline installation price. Confirm the export rule, program eligibility date, and interconnection timeline for your exact utility before treating a payback estimate as a promise.
Export value
This page models full retail net metering (krs 278.465). Ask which tariff and export credit apply to your account, not only which program name appears in the proposal.
Incentive eligibility
Check equipment, income, installer, application, and placed-in-service rules before subtracting an incentive from the quote. Programs can close or change terms.
Interconnection
Budget for the published 4–8 weeks and confirm who pays for a required meter, service upgrade, or engineering review.
Source trail: production assumptions use NREL PVWatts; incentive discovery should be checked against DSIRE; electricity-market context is available from the EIA. Confirm final tax treatment with the IRS and your utility.
Calculate your Kentucky solar economics
Our calculators are pre-filled with Kentucky data. Run any tool below.