Solar Panel Payback Calculator for Louisiana
Louisiana (LA) offers good solar potential with an average of 4.8 peak sun hours per day. The average residential electricity rate is 10 cents per kWh, and solar installation costs average $2.85 per watt. Based on these figures, a typical 6 kW residential solar system in Louisiana has an estimated payback period of 14.2 years and generates $16,701 in total savings over 25 years.
Solar System Size Comparison for Louisiana
The table below compares four common residential solar system sizes for Louisiana homeowners. All calculations use the state average electricity rate of 10 cents per kWh, average installation cost of $2.85/W, and 4.8 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 | $11,400 | $3,420 | $7,980 | 5,606 kWh | $561 | 14.2 years | $6,319 | $11,132 |
| 6 kW | $17,100 | $5,130 | $11,970 | 8,410 kWh | $841 | 14.2 years | $9,481 | $16,701 |
| 8 kW | $22,800 | $6,840 | $15,960 | 11,213 kWh | $1,121 | 14.2 years | $12,640 | $22,267 |
| 10 kW | $28,500 | $8,550 | $19,950 | 14,016 kWh | $1,402 | 14.2 years | $15,799 | $27,833 |
Solar Energy in Louisiana: What You Need to Know
Louisiana has good sun hours but some of the lowest electricity rates in the country, extending payback periods. The state solar tax credit has expired and natural gas dominates the energy mix.
Electricity Rates in Louisiana
The average residential electricity rate in Louisiana is 10 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
Louisiana averages 4.8 peak sun hours per day, which is a solid level for residential solar. While not the sunniest state, the combination of decent sun hours with modern high-efficiency panels produces meaningful electricity savings throughout the year. A 6 kW system in Louisiana produces approximately 8,410 kWh per year, accounting for standard system efficiency losses and typical weather patterns.
Louisiana Solar Incentives and Programs
Louisiana solar tax credit expired in 2018. Net metering available. No property tax exemption specific to solar. Entergy Louisiana offers interconnection for distributed generation.
Incentive Summary for Louisiana
- Federal Tax Credit: 30% ITC (available through 2032)
- State Tax Credit: None
- Net Metering: Available
- SRECs: Not available
- Avg. Installation Cost: $2.85/watt (before incentives)
How Louisiana Compares to Similar States
Below is a comparison of Louisiana 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 |
|---|---|---|---|---|---|---|
| Louisiana | 4.8 | 10c | $2.85 | $11,970 | 14.2 years | $16,701 |
| Kansas | 4.8 | 13.5c | $2.90 | $12,180 | 10.7 years | $26,526 |
| South Carolina | 4.8 | 13.5c | $2.80 | $8,260 | 7.3 years | $30,446 |
| Alabama | 4.7 | 13c | $2.80 | $11,760 | 11.0 years | $24,732 |
| Georgia | 4.7 | 13c | $2.85 | $11,970 | 11.2 years | $24,522 |
| Idaho | 4.7 | 10.5c | $2.85 | $11,970 | 13.8 years | $17,504 |
Environmental Impact of Solar in Louisiana
Installing a 6 kW solar system in Louisiana offsets approximately 7,191 pounds of CO2 per year, which is equivalent to planting 59.3 trees annually. Over the 25-year lifespan of your solar system, that adds up to roughly 179,775 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 Louisiana communities.
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