Solar Panel Payback Calculator for Kentucky
Kentucky (KY) offers good solar potential with an average of 4 peak sun hours per day. The average residential electricity rate is 11 cents per kWh, and solar installation costs average $2.80 per watt. Based on these figures, a typical 6 kW residential solar system in Kentucky has an estimated payback period of 15.3 years and generates $14,520 in total savings over 25 years.
Solar System Size Comparison for Kentucky
The table below compares four common residential solar system sizes for Kentucky homeowners. All calculations use the state average electricity rate of 11 cents per kWh, average installation cost of $2.80/W, and 4 peak sun hours. The federal 30% Investment Tax Credit is included in all scenarios.
| System Size | Gross Cost | Federal Credit | Net Cost | Annual Output | Annual Savings | Payback | 20-Year Savings | 25-Year Savings |
|---|---|---|---|---|---|---|---|---|
| 4 kW | $11,200 | $3,360 | $7,840 | 4,672 kWh | $514 | 15.3 years | $5,268 | $9,680 |
| 6 kW | $16,800 | $5,040 | $11,760 | 7,008 kWh | $771 | 15.3 years | $7,902 | $14,520 |
| 8 kW | $22,400 | $6,720 | $15,680 | 9,344 kWh | $1,028 | 15.3 years | $10,536 | $19,361 |
| 10 kW | $28,000 | $8,400 | $19,600 | 11,680 kWh | $1,285 | 15.3 years | $13,170 | $24,201 |
Solar Energy in Kentucky: What You Need to Know
Kentucky has low electricity rates from coal generation, resulting in longer solar payback periods. Net metering is available but the overall economics are less favorable than many other states.
Electricity Rates in Kentucky
The average residential electricity rate in Kentucky is 11 cents per kWh, which is below the national average of approximately 16 cents per kWh. Lower electricity rates mean the payback period is longer, but the 25-year savings are still substantial. As electricity rates continue to rise (averaging 3% per year nationally), the value of solar ownership increases over time.
Peak Sun Hours and Solar Production
Kentucky averages 4 peak sun hours per day, which is moderate but still viable for residential solar. Many successful solar installations operate across the Northeast and Midwest with similar sun hours. Modern panels are increasingly efficient even in diffuse light conditions. A 6 kW system in Kentucky produces approximately 7,008 kWh per year, accounting for standard system efficiency losses and typical weather patterns.
Kentucky Solar Incentives and Programs
No state tax credit. Net metering at avoided-cost rate (lower than retail). No property tax or sales tax exemption specific to solar. TVA Green Invest program available in some areas.
Incentive Summary for Kentucky
- Federal Tax Credit: 30% ITC (available through 2032)
- State Tax Credit: None
- Net Metering: Available
- SRECs: Not available
- Avg. Installation Cost: $2.80/watt (before incentives)
How Kentucky Compares to Similar States
Below is a comparison of Kentucky with five states that have similar solar conditions. All calculations are based on a 6 kW residential system using each state's average electricity rate and sun hours.
| State | Sun Hours | Rate (c/kWh) | Cost/Watt | Net Cost | Payback | 25-Yr Savings |
|---|---|---|---|---|---|---|
| Kentucky | 4 | 11c | $2.80 | $11,760 | 15.3 years | $14,520 |
| Illinois | 4 | 16c | $3.10 | $13,020 | 11.6 years | $25,206 |
| Indiana | 4 | 14c | $2.95 | $12,390 | 12.6 years | $21,058 |
| Minnesota | 4 | 14.5c | $3.10 | $13,020 | 12.8 years | $21,622 |
| New Jersey | 4 | 18c | $3.00 | $12,600 | 10.0 years | $30,404 |
| Connecticut | 3.8 | 27c | $3.20 | $13,440 | 7.5 years | $47,845 |
Environmental Impact of Solar in Kentucky
Installing a 6 kW solar system in Kentucky offsets approximately 5,992 pounds of CO2 per year, which is equivalent to planting 49.4 trees annually. Over the 25-year lifespan of your solar system, that adds up to roughly 149,800 pounds of avoided carbon emissions. Choosing solar energy is one of the most impactful steps a homeowner can take to reduce their carbon footprint and contribute to cleaner air in Kentucky communities.
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