2026 · No Federal Tax Credit · NREL + EIA Data
Solar Panels in Louisiana: Cost, Payback & ROI (2026)
Is solar still worth it in Louisiana after the 30% federal tax credit expired? These pre-computed estimates use NREL PVWatts production data and current 10.8¢/kWh Louisiana electricity rates for a typical home using 900 kWh/month.
Section 25D (30% federal solar tax credit) expired December 31, 2025
All numbers below reflect 2026 math with no federal residential credit. State incentives, where applicable, are noted in the section below.
Louisiana Solar at a Glance
Based on a 900 kWh/month home ($97/mo electric bill at 10.8¢/kWh), 100% offset, no state rebate applied.
7.3 kW
For 900 kWh/month home
$21,527
At $2.95/W (LBNL 2024 avg)
15.9 years
Without state rebate
$1,166
Estimated annual savings
$37,301
Cumulative before rebate
$15,774
Savings minus system cost
10.8¢/kWh
below average vs. 16.0¢ U.S. avg · EIA 2025
1,480 kWh/kW/yr
moderate · 4.5 peak sun hrs/day · NREL PVWatts
Is Solar Worth It in Louisiana in 2026?
Louisiana's 10.8¢/kWh average electricity rate — among the lowest in the country — significantly extends solar payback periods compared to high-rate states. However, a 1,480 kWh/kW/year solar resource is solid, and Entergy Louisiana offers net metering at retail rates. The economics work best for high-consumption households.
For a typical Louisiana home consuming 900 kWh per month, our calculation shows a 7.3 kW system needed for 100% offset. At the current national average installed cost of $2.95/W (LBNL Tracking the Sun 2024), that's $21,527 gross before any state rebates. Year-one savings of $1,166 grow each year as electricity rates escalate — the model assumes 2.5%/year (EIA AEO 2024).
The 15.9 years payback period is longer than the national average due to low electricity rates or limited solar resource. Over 25 years — the standard warranty period for most premium panels — a Louisiana homeowner following this profile would save an estimated $37,301 total, for a net benefit of $15,774 after recovering the system cost.
Year-by-Year Savings Snapshot: First 10 Years
Based on 7.3 kW system, 0.5%/yr degradation, 2.5%/yr rate escalation, no state rebate.
| Year | Production (kWh) | Annual Savings | Cumulative |
|---|---|---|---|
| Year 1 | 10,800 | $1,166 | $1,166 |
| Year 2 | 10,746 | $1,190 | $2,356 |
| Year 3 | 10,692 | $1,213 | $3,569 |
| Year 4 | 10,639 | $1,237 | $4,807 |
| Year 5 | 10,586 | $1,262 | $6,068 |
| Year 6 | 10,533 | $1,287 | $7,355 |
| Year 7 | 10,480 | $1,313 | $8,668 |
| Year 8 | 10,428 | $1,339 | $10,007 |
| Year 9 | 10,375 | $1,365 | $11,372 |
| Year 10 | 10,324 | $1,392 | $12,764 |
System cost to recover: $21,527. Table shows savings without state rebate applied. Use the interactive calculator to enter your actual bill and any rebate.
Solar Incentives in Louisiana (2026)
Louisiana has no state solar income tax credit currently (it expired). Net metering and falling equipment costs are the primary drivers.
- Net metering via Entergy Louisiana and other utilities
- Property tax exemption on solar added value (Act 1171)
Incentive programs change frequently. Verify current offerings at dsireusa.org or directly with your utility before making any purchasing decision.
How We Calculate Louisiana Solar ROI
These estimates use the same methodology as our interactive solar ROI calculator, applied to Louisiana-specific data:
System cost
$2.95/W installed
LBNL Tracking the Sun 2024
Solar production
1,480 kWh/kW/yr
NREL PVWatts v8
Electricity rate
10.8¢/kWh
EIA Residential Rates 2025
Rate escalation
2.5%/year
EIA Annual Energy Outlook 2024
Panel degradation
0.5%/year
NREL (Jordan & Kurtz, median)
System lifetime
25 years
Standard warranty period
No Section 25D (federal residential solar credit) is included — it expired December 31, 2025. State incentives are not reflected in these pre-computed figures; use the interactive calculator to enter specific rebate amounts.
Calculate With Your Actual Numbers
The figures above use statewide averages. Enter your actual monthly bill, any Louisiana rebate amounts, and your offset target in our interactive calculator for a personalized estimate.
Frequently Asked Questions — Solar in Louisiana
Compare Other States
Estimates are based on NREL PVWatts v8 production data, EIA 2025 electricity rates, and LBNL 2024 installed cost benchmarks. Actual savings vary by roof pitch, shading, utility rate structure, and local permit costs. This is not financial advice. Consult a licensed solar installer before making any purchasing decision.