Installed home solar in Louisiana commonly runs about $2.50 to $3.00 per watt before incentives, so a 7 kW system costs roughly $17,500 to $21,000 (confirm with local quotes). Because Louisiana power is cheap at about 14.44 cents per kWh and exports are paid at low avoided-cost rates, payback usually runs a longer 13 to 18 years. The federal 25D homeowner credit ended December 31, 2025.
Louisiana homeowners pay about 14.44 cents per kWh for electricity (EIA retail sales, residential Louisiana, as of April 2026), one of the lower rates in the country. Cheap power is good for your wallet, but it also means each kWh your roof makes offsets less, so the real questions here are what a system costs and how the payback math actually works. This page walks the cost per watt, the honest payback, and what changed in 2026. For the national picture, see our solar cost and savings guide. For Louisiana’s full net-metering rules and incentives, see our Louisiana solar guide.
A 7 kW rooftop system in New Orleans produces about 10,351 kWh a year (NREL PVWatts v8, ZIP 70112), and at Louisiana’s 14.44 cents per kWh residential rate that is worth about $1,495 a year only on the share you use in your own home (EIA, April 2026). Power you export is paid at a much lower avoided-cost rate, so how much you self-consume is the real lever on your payback below.
How much does solar cost in Louisiana?
Price is quoted in dollars per watt of system size. A typical residential install commonly runs about $2.50 to $3.00 per watt before any incentives. That is a national benchmark, not a Louisiana price filing, so treat the table as a starting point and get itemized local quotes to confirm your own $/W. Your price moves with system size, roof complexity, panel and inverter choice, whether you add a battery, and the installer.
| System size | Fits a home that uses | Estimated installed cost ($2.50 to $3.00/W) |
|---|---|---|
| 5 kW | Smaller bill, roughly $100 to $150/mo | About $12,500 to $15,000 |
| 7 kW | Average bill, roughly $150 to $250/mo | About $17,500 to $21,000 |
| 10 kW | Larger home or an EV, $250+/mo | About $25,000 to $30,000 |
Cost ranges are a national $/W benchmark for planning, not a guaranteed Louisiana price. A battery, which many Louisiana homeowners add for hurricane backup, is an extra cost on top of these figures. Confirm your quote before you budget.
What is the solar payback in Louisiana?
Payback is cost divided by what you stop paying the utility. Louisiana is a tougher payback state than the sunshine suggests, for two honest reasons: power is cheap, so each kWh you offset is worth less, and Louisiana no longer pays retail credit for the power you export. The table pairs the cost above with a production-based offset priced at the full retail rate, which is the best case where you use nearly all your solar at home.
| System size | Estimated annual production | Best-case yearly bill offset | Simple payback |
|---|---|---|---|
| 5 kW | About 7,394 kWh | About $1,070 | About 13 to 18 years |
| 7 kW | About 10,351 kWh | About $1,495 | About 13 to 18 years |
| 10 kW | About 14,787 kWh | About $2,135 | About 13 to 18 years |
Estimates, not a guarantee. Production is from NREL PVWatts v8 for New Orleans (ZIP 70112) and priced at the current EIA Louisiana rate. The offset shown is best case, where you use nearly all your solar on-site; power you export is credited at a low avoided-cost rate, not retail, so a home that exports a large share sees a longer payback. Rates, production, and prices vary, so verify your own numbers.
What moves your payback in 2026
Four things decide where you land, and in Louisiana most of them push the timeline out unless you size the system to your own usage:
- Your electric rate. At about 14.44 cents per kWh, Louisiana power is cheap, so every kWh your roof offsets saves less than it would in a high-rate state (EIA). That is the single biggest reason payback is longer here.
- Your production. The good news is that Louisiana is sunny, so output per panel is strong. Roof pitch, orientation, and shading still swing your result, so estimate yours with NREL’s free PVWatts calculator before you size a system.
- How exports are paid. The Louisiana Public Service Commission ended retail-rate net metering for customers who interconnect after December 31, 2019; new solar homes now pay the full retail rate for grid power and are credited at a lower avoided-cost rate for power they export (LPSC net metering rules). Customers who went solar by the end of 2019 are grandfathered on retail credit for 15 years. New Orleans homes are regulated by the New Orleans City Council rather than the LPSC, so confirm your local rule. For how export credits work, see how net metering credits your solar exports. If Entergy Louisiana serves you, see how Entergy Louisiana credits solar exports.
- No federal credit in 2026. The 30% federal Residential Clean Energy Credit (Section 25D) ended for expenditures made after December 31, 2025, under the One Big Beautiful Bill Act, so a Louisiana homeowner buying with cash or a loan in 2026 cannot claim it (IRS). See what the federal solar tax credit change means in 2026.
And the state credit is gone too, so leave it out of your math. Louisiana once had a generous solar income-tax credit, but under state law R.S. 47:6030 no credit is authorized for systems installed after December 31, 2017, and the Louisiana Department of Revenue treats it as a closed program (Louisiana R.S. 47:6030). Many older guides still describe it as if it were live, so do not count on a Louisiana state solar tax credit in 2026. For the current incentive landscape, see our solar incentives overview.
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Why self-consumption and a battery matter more in Louisiana
Because exported power earns a low avoided-cost credit here, the value of your system depends on using your solar when the sun is shining rather than shipping it to the grid for pennies. Two moves protect your payback:
- Size to your daytime usage. A system matched to what your home actually uses during the day self-consumes more of its output, so more kWh are valued at the full 14.44 cents rate instead of the low export rate. An oversized array that dumps a lot to the grid pays back slower here.
- Consider a battery. A battery stores midday solar for the evening, which raises self-consumption and, just as importantly in Louisiana, keeps the lights on during hurricane-season outages. It adds cost, so weigh it as resilience plus a payback boost, not a guaranteed savings play.
How you pay changes the cost you carry
The sticker price is one thing; how you finance it decides your out-of-pocket and your payback.
| How you pay | Up-front cost | Best when |
|---|---|---|
| Cash | Full system price | You want the shortest payback and the most lifetime savings |
| Solar loan | Little or none, financed over time | You want to own the system with low money down |
| Lease or PPA | $0-up-front where you qualify | You want no out-of-pocket cost and a lower or fixed power price without owning |
A lease or PPA has no up-front cost, but the company owns the panels, terms typically run 20 to 25 years and may include an annual escalator, and total payments can exceed a cash purchase. No 2026 Louisiana homeowner gets the federal residential credit, since that credit ended after December 31, 2025. For a full payback breakdown, see the financial case for whether solar panels are worth it.
Frequently asked questions
How much does solar cost in Louisiana?
Installed home solar commonly runs about $2.50 to $3.00 per watt before incentives, so a 5 kW system is roughly $12,500 to $15,000, a 7 kW system is about $17,500 to $21,000, and a 10 kW system is about $25,000 to $30,000. Those are national planning benchmarks, not a Louisiana price filing, so get itemized local quotes to confirm your own dollars per watt. A battery for hurricane backup is an added cost on top.
What is the payback on solar in Louisiana?
Longer than in high-rate states. Louisiana power is cheap at about 14.44 cents per kWh (EIA, April 2026), and exported power is credited at a low avoided-cost rate rather than retail, so simple payback usually runs about 13 to 18 years, best case when you self-consume most of your production. A 7 kW system in New Orleans produces about 10,351 kWh a year (NREL PVWatts v8). Your real payback depends on your quote, your roof, and how much power you use at home.
Does Louisiana still have net metering in 2026?
Not the retail-rate kind for new customers. The Louisiana Public Service Commission ended retail-rate net metering for homes that interconnect after December 31, 2019; new solar customers pay the full retail rate for grid power and are credited at a lower avoided-cost rate for what they export (LPSC). Customers who went solar by the end of 2019 are grandfathered on retail credit for 15 years. New Orleans is regulated by the New Orleans City Council, so confirm your local rule.
Is there a Louisiana state solar tax credit in 2026?
No. Louisiana once offered a generous solar income-tax credit, but under state law R.S. 47:6030 no credit is authorized for systems installed after December 31, 2017, and the Department of Revenue treats it as a closed program. Older guides still describe it as active, so do not count on a Louisiana state solar tax credit in your 2026 math.
Does a Louisiana homeowner qualify for the federal solar tax credit in 2026?
Not as a homeowner buying in 2026. The 30% federal Residential Clean Energy Credit (Section 25D) ended for expenditures made after December 31, 2025, under the One Big Beautiful Bill Act, so a cash or loan buyer cannot claim it. A separate commercial credit (Section 48E) can apply to leased and PPA systems, but the business that owns the system claims it, not the homeowner.
Reviewed by the MySolarFY team. Cost and payback figures are estimates built from NREL PVWatts v8 production for New Orleans and the EIA Louisiana residential rate, with net-metering and incentive facts verified against the Louisiana Public Service Commission, Louisiana R.S. 47:6030, and IRS sources as of August 2026; prices, production, tariffs, and programs change, so confirm current numbers with local installer quotes and each source before you decide. MySolarFY does not provide tax or financial advice; consult a licensed professional about your own situation. Learn more about our editorial team and how we source rates, production, and incentives.
MySolarFY is a free service that matches homeowners with licensed solar installers. We are not an installer, financing company, or government program. “No up-front cost” refers to qualifying lease or PPA financing, where eligible homeowners may have no out-of-pocket cost at installation. Lease and PPA terms typically run 20 to 25 years, may include an annual price escalator, and total payments may exceed the cost of a cash purchase. Homeowners do not get the federal residential credit that ended after December 31, 2025. Solar panels are not free and monthly payments apply. Cost, savings, payback, eligibility, incentives, and rates vary and are not guaranteed. See our full disclaimer.