Solar Panels Cost $19k-$31k in St. Martin Parish, LA | February, 2025
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How much do solar panels cost in St. Martin Parish, LA in 2025?
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In St. Martin Parish, LA in February, 2025, the average price per watt for solar systems is at $4.03/W
Applying the cost per watt, you are able to conclude that for every 1 kW (1000 watts) your solar panel system can generate, you will have to spend, on average, $4,030 to have it installed. In St. Martin Parish, the price of a 5 kW solar panel system is generally $14,105, after the 30% federal tax credit. Your electricity use habits may need a bigger system.
Select your county from the menu on the left to find the typical roof size and maximum solar panel capacity for homes in your area. The following summary, below, highlights the costs, payback period, and 20-year average savings for a 5 kW system installed in your county.
Average out-of-pocket cost for a 5 kW system The upfront amount spent to buy and install solar.
St. Martin Parish: $14,105US Average: $12,523
Average Payback Period The number of years until you break even on the solar investment.
St. Martin Parish: 8 yearsUS Average: 7 years
Average Net 20-year savings The total amount of money saved over 20 years minus the out-of-pocket cost.
St. Martin Parish: $16,973US Average: $16,301
Solar Potential in St. Martin Parish
Estimated system size and solar electricity production per median viable roof in St. Martin Parish.
Roof size 965sq. ft.
Capacity 13.5kW DC
Electricity 17.2kkWh AC per yr.
Electricity Costs in St. Martin Parish, LA & What that Means for Your Solar Panel Pricing
On average, St. Martin Parish residents pay 154.68 for their electric bill each month and use 1,343 kWh. Please note that the energy consumption for apartments and other smaller living spaces is included in this statistic.
In February 2025, the electricity rate in St. Martin Parish, LA is 11.52¢ per kWh.
Installing a an 11 kW solar panel system will be priced at about $44,330 initially, but with the 30% federal tax credit, you can receive a 30% reimbursement, bringing the total to $31,032.
Go Solar for less than your cell phone bill.
Average solar panel costs by system size in St. Martin Parish
On the left side below, the price breakdown for multiple sizes of solar panel systems installed in St. Martin Parish can be seen. A more extensive solar array will expectedly cost more, but it will also yield more significant electricity savings and more substantial income tax credits.
The solar panel cost calculator to the right and below details costs and benefits, using an average $154.68 electric bill in St. Martin Parish Replace the $154.68 with your average electricity bill for personalized results.
System Size
Roof Size Min. space required
Electricity Value Annual Production
Est. Price
System Size 7kW
Roof Size Min. space required
501 ft²
Electricity Value Annual Production $1,349 a year
Est. Price
$19,747
Savings from a 7kWthis system
Est. yearly production 11,242 kWh
Est. monthly savings $112
Full payback in 11 years
Environmental Impacts
Reduces CO2 emissions by 5.61 tons a year
Equivalent to planting 257 trees a year
Equivalent to driving 13,877 mi less a year
System Size 8kW
Roof Size Min. space required
572 ft²
Electricity Value Annual Production $1,542 a year
Est. Price
$22,568
Savings from a 8kWthis system
Est. yearly production 12,848 kWh
Est. monthly savings $128
Full payback in 12 years
Environmental Impacts
Reduces CO2 emissions by 6.41 tons a year
Equivalent to planting 294 trees a year
Equivalent to driving 15,859 mi less a year
System Size 9kW
Roof Size Min. space required
644 ft²
Electricity Value Annual Production $1,734 a year
Est. Price
$25,389
Savings from a 9kWthis system
Est. yearly production 14,454 kWh
Est. monthly savings $145
Full payback in 14 years
Environmental Impacts
Reduces CO2 emissions by 7.21 tons a year
Equivalent to planting 331 trees a year
Equivalent to driving 17,841 mi less a year
System Size 10kW
Roof Size Min. space required
715 ft²
Electricity Value Annual Production $1,927 a year
Est. Price
$28,210
Savings from a 10kWthis system
Est. yearly production 16,060 kWh
Est. monthly savings $155
Full payback in 15 years
Environmental Impacts
Reduces CO2 emissions by 7.73 tons a year
Equivalent to planting 355 trees a year
Equivalent to driving 19,133 mi less a year
System Size 11kW
Roof Size Min. space required
787 ft²
Electricity Value Annual Production $2,120 a year
Est. Price
$31,031
Savings from a 11kWthis system
Est. yearly production 17,666 kWh
Est. monthly savings $155
Full payback in 17 years
Environmental Impacts
Reduces CO2 emissions by 7.73 tons a year
Equivalent to planting 355 trees a year
Equivalent to driving 19,133 mi less a year
St. Martin Parish Solar Panel Installation Incentives & Rebates | 2025
Rural entrepreneurs and farmers might find that the REAP Grant pays for 80% to 100% of their costs when installing solar or wind energy systems. Unsure if you're eligible? Check your status with our REAP Grant eligibility tool.
A 30% federal tax credit is accessible to most homeowners for residential solar installations, which renders solar energy a feasible choice in various regions across the United States. Apart from the federal incentives, state and local programs also aim to boost solar energy uptake.
Louisiana provides 2 solar rebates and incentives from different utility companies and government departments.
Solar incentives in LAIncentive Description Value
Home Energy Loan Program (HELP)
Value:Up to $6,000
The Louisiana Department of Natural Resources (DNR) manages the Home Energy Loan Program, or HELP, for homeowners making energy efficiency improvements. HELP loans offer a maximum principal of $12,000 to be repaid over five years. Half of the principal is disbursed by the DNR at 2% interest. The other half is disbursed from any of the HELP partner banks at their current market rate. The partner bank will handle all servicing responsibilities. HELP loan partners set their own institutional policies, including their own interest rates and the maximum amount for their own portion of the principal. Interested homeowners should therefore contact their local partner directly to apply or make further inquiries. A list of current HELP loan partners is available from the DNR website.
New Orleans City - Energy Smart Program
Value:Varies
The Energy Smart program is a joint venture between Entergy and the City of New Orleans. Orleans Parish Entergy customers may be eligible for a variety of rebates from the city government for new energy efficient equipment and improvement projects. Available rebates will change from time to time. Current offers include HVAC, windows, insulation/weatherization, ductwork, CFL/LED lighting, smart thermostats, and solar water/pool heating. Total rebate amounts can exceed $5,000 for qualifying customers. Application forms and additional information are available on both the Entergy and New Orleans city websites.
Are solar panels worth it in St. Martin Parish, LA?
For homeowners in St. Martin Parish looking to stay beyond the payback period of their solar system, solar panels are the best choice. Installing a 5 kW solar system in St. Martin Parish, LA will, on average, save you $23,018.2 over 20 years, and you can expect to break even in about 8 years.
The cost of not having solar panels in St. Martin Parish, LA
Failing to have solar panels or an alternative backup energy means missing the savings mentioned earlier and being entirely reliant on your electric utility for electricity. As recent news articles have highlighted, full dependence on your utility provider isn't always ideal.
Lately, utilities in St. Martin Parish have had an average of 1.39 outages per customer annually. The average length of an outage is 210.24 minutes. In events like winter storms, construction accidents, or grid management errors, this duration can extend significantly.
See the info below to see the number of current electricity customers without power in St. Martin Parish.
A solar energy system could mitigate the effects of future outages, whether or not it has a backup battery.
Power Outages
Currently, 0 customers are being tracked in St. Martin Parish.
What impacts the cost of solar panels in St. Martin Parish, LA?
Your Energy Needs - Larger solar panel systems come with a larger upfront cost, but the price per watt is reduced. Homeowners often discover that installing a solar system that can offset their entire electric bill is advantageous, ensuring optimal savings.
Make & Model - There are many brands and models of solar panels. Because the installer you select might have specific brand preferences, picking a highly rated company is especially important. The utilization of high-quality materials is likely to result in a more positive long-term experience for buyers.
Solar Panel Type - It's understandable that monocrystalline panels are now the industry standard. They are pricier but generate more energy. Most professionals in solar installation work with panels constructed from this material.
Your Property - Trees, uneven ground, or additional considerations can increase the complexity of the installation. Most solar installers today use satellite imagery to evaluate your home and integrate these elements into the preliminary cost estimate.
Labor Rates - Different companies offer varying wages to their employees, and these costs are inevitably borne by the consumers. Businesses that invest in higher wages often see higher reviews for their work and customer service.
Permitting & Interconnection - Depending on the area, local permitting and utility interconnection fees will affect the cost of your installation. Quality local installers will include these figures in your preliminary estimates to provide transparency.
See what solar panels cost in other St. Martin Parish cities
The typical cost per watt for solar panels in St. Martin Parish, LA as of February, 2025 is $4.03/W. After the federal tax credit, the estimated cost for a 5 kW solar panel system in St. Martin Parish, LA is roughly $14,105.
Currently, Louisiana residents can benefit from 2 rebates and incentives available through various utilities and government bodies. On top of that, most individuals are eligible for the 30% federal income tax credit.
Cash payments yield the highest savings, yet several financing options now available for solar panels are advantageous as well. Installers often have partnerships with financing companies and will include this information in your initial quotes.
Yes, in St. Martin Parish, LA, the average time for 5 kWsolar panel systems to pay for themselves is 8 years, leading to electricity savings of $23,018.2 over a 20-year period.
Savings from 
Environmental Impacts 
