What solar costs in Louisiana
Berkeley Lab does not have enough reported installations in Louisiana to publish a reliable local price, so the figures below use the national median. Treat them as a starting point, not a quote.
The numbers
High electricity prices make solar pay faster, so a red figure in the third box is good news for a solar buyer and bad news every other month of the year.
Holding a quote above $30,000? Installers in Louisiana price the same system very differently. Two more bids is the cheapest way to find out where yours sits.
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What the roof makes month by month in New Orleans
A 1.6 to 1 swing, which is unusually flat. Output here is steadier month to month than almost anywhere else in the country, so monthly bills stay more predictable.
Figures are for an 8 kW array at 20 degrees facing south, modelled from NSRDB radiation data at New Orleans.
What different sizes cost in Louisiana
| Size | Panels | Price | Output | Year one saving | Payback |
|---|---|---|---|---|---|
| 4 kW | 10 | $15,000 | 5,620 kWh | $715 | 17.7 years |
| 5 kW | 13 | $18,750 | 7,025 kWh | $894 | 17.7 years |
| 6 kW | 15 | $22,500 | 8,430 kWh | $1,072 | 17.7 years |
| 7 kW | 18 | $26,250 | 9,835 kWh | $1,251 | 17.7 years |
| 8 kWtypical | 20 | $30,000 | 11,240 kWh | $1,430 | 17.7 years |
| 10 kW | 25 | $37,500 | 14,050 kWh | $1,787 | 17.7 years |
| 12 kW | 30 | $45,000 | 16,860 kWh | $2,145 | 17.7 years |
| 15 kW | 38 | $56,250 | 21,075 kWh | $2,681 | 17.7 years |
| 20 kW | 50 | $75,000 | 28,100 kWh | $3,574 | 17.7 years |
Payback is the same at every size because this table holds the price per watt flat at the national median of $3.75: price and output both grow in step with the system, so their ratio does not change. Real quotes are not quite linear. Permitting, design and connection cost roughly the same on any roof, so a small system usually costs more per watt and a large one less, and pays back correspondingly later or sooner than shown.
Louisiana has too few reported installations for a local median, so the price is the national median of what households paid on host-owned systems installed in 2024-2025, compiled by Berkeley Lab. Local quotes can sit well above or below it.
4 programmes in Louisiana
The 30% federal credit ended for installations completed after 31 December 2025. These state, utility and local programmes are unaffected by that, and are now the only thing that reduces the price.
| Programme | Type | Run by | Reach | Updated |
|---|---|---|---|---|
| Interconnection Guidelines | Interconnection | State | statewide | January 14, 2024 |
| Solar Energy System Exemption | Property Tax Incentive | State | statewide | September 26, 2025 |
| City of New Orleans - Net Metering | Net Metering | Local | partial | March 3, 2026 |
| Louisiana Solar Rights | Solar/Wind Access Policy | State | partial | December 23, 2025 |
Programme index from DSIRE, N.C. Clean Energy Technology Center, NC State University, licensed CC BY-SA 4.0. “Partial” means it reaches only some utilities or counties. A listed programme can still be closed or out of budget, so check its own page before counting on it.
How Louisiana ranks
Closest on payback: Utah (17.0 yrs), Nebraska (17.3 yrs), Kentucky (17.9 yrs), Tennessee (18.0 yrs).
Solar in Louisiana, answered
How much do solar panels cost in Louisiana?
An 8 kW system in Louisiana, roughly 20 panels, costs about $30,000 before incentives. That is based on $3.75 per watt, the national median from Lawrence Berkeley National Laboratory for 2024-2025, because too few Louisiana installations are reported to publish a local figure. There is no longer a federal tax credit to subtract from that figure.
Is there still a 30% solar tax credit in Louisiana?
No. The federal Residential Clean Energy Credit under Internal Revenue Code section 25D was terminated by the One Big Beautiful Bill Act for expenditures made after 31 December 2025, and it did not step down first. A Louisiana homeowner buying a system with cash or a loan today receives no federal tax credit. Under a lease or power purchase agreement the credit survives as section 48E but belongs to the company that owns the equipment, not to the household. Louisiana still has 4 state, utility or local programmes covering rooftop solar.
How long do solar panels take to pay for themselves in Louisiana?
About 17.7 years in Louisiana. An 8 kW system costs roughly $30,000 and saves about $1,430 in its first year at the state's average residential rate of 12.72 cents per kilowatt-hour (EIA, July 2026). That calculation includes no federal tax credit, because the residential credit ended after 31 December 2025.
How much electricity does a solar panel produce in Louisiana?
Each kilowatt of panels in Louisiana produces about 1,405 kilowatt-hours a year, modelled at New Orleans facing south at a 20 degree tilt using NSRDB radiation data. An 8 kW system therefore makes roughly 11,240 kilowatt-hours a year. The national average is about 1,332 kilowatt-hours per kilowatt installed.
Is solar worth it in Louisiana?
It depends less on sunshine than on your electricity price. In Louisiana power costs 12.72 cents per kilowatt-hour (EIA, July 2026), which makes an 8 kW system pay for itself in about 17.7 years and clear roughly $15,722 over 25 years. Solar from your own roof works out at 11.3 cents per kilowatt-hour over its life, against 12.72 cents from the utility.
How many solar panels do I need in Louisiana?
A typical Louisiana installation is about 20 panels, which is 8 kW at the 400 watt module that is now standard and needs roughly 440 square feet of roof. To size it to your own use, divide your annual kilowatt-hours by 1,405, which is what each kilowatt of panels produces in Louisiana each year.
Do solar panels work in winter in Louisiana?
Yes, but output falls sharply. In New Orleans a kilowatt of panels makes about 141 kilowatt-hours in May and about 86 in Dec, a swing of 1.6 to 1 across the year. A system sized to cover your annual consumption will therefore run a surplus in summer and leave you buying power in winter, so how your utility settles that difference matters as much as the size of the array.
Three competing quotes beat any amount of comparing panel brands
Sales cost and margin are over a third of an installed price in Louisiana, and they are the part that competition removes. A single quote from whoever reached you first is how people end up in the top quarter of what their neighbours paid.
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Prices and rules change. We will tell you when they do
Berkeley Lab publishes installed prices once a year, the EIA updates electricity rates every month, and Congress changed the tax treatment of all of this in 2025. One email when something on this site actually changes, and nothing else.
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