Solar in Lafayette: What Homeowners Should Know
Lafayette sees an average of 5 peak sun hours per day, which is what ultimately determines how much electricity a rooftop system produces here. A standard 8 kW system (about 20 panels) generates roughly 11,680 kWh each year in Lafayette — and paired with Louisiana's local electricity rate of $0.102/kWh, that's where the savings come from.
At those numbers, a Lafayette homeowner saves about $99/month ($1,191/year). Against a $22,000 system cost, that works out to a payback of about 18.5 years, after which the system produces essentially free power for two decades — an estimated $18,694 in lifetime savings. Note: the 30% federal tax credit expired at the end of 2025 for purchased systems, though a solar lease or PPA can still pass it through. The local grid is served by Entergy Louisiana, whose net metering policy directly affects how much credit you earn for surplus power.
Cost & Savings Breakdown
Based on a standard 8 kW system in Lafayette
25-Year Savings Projection
Utility & Net Metering
Available Incentives
Choosing a Solar Installer in Lafayette
- 1.Get at least 3 quotes. Prices in Louisiana vary widely between installers — comparing bids on the same 8 kW system is the fastest way to avoid overpaying.
- 2.Confirm Entergy Louisiana interconnection experience. An installer who regularly files with your local utility will move your permit and net-metering paperwork through faster.
- 3.Check licensing & the warranty. Look for NABCEP-certified installers and a workmanship warranty of 10+ years on top of the standard 25-year panel warranty.
- 4.Size for your actual usage. With 5 sun hours/day in Lafayette, make sure the proposed system matches your kWh history — not just your roof space.
Common Questions
How much does solar cost in Lafayette?
Solar in Lafayette, Louisiana costs approximately $22,000 for a 8 kW system. The 30% federal tax credit expired December 31, 2025 for purchased systems, though solar leases and PPAs can still pass it through.
What is the solar payback period in Lafayette?
The estimated payback period for solar in Lafayette is 18.5 years for a standard 8 kW system, based on local sun hours of 5 hrs/day and a rate of $0.102/kWh.
Is solar worth it in Lafayette?
For most Lafayette homeowners, yes. With 5 peak sun hours per day and an electricity rate of $0.102/kWh, a typical system saves $1,191 per year and around $18,694 over 25 years after paying for itself in 18.5 years.
How many solar panels do I need in Lafayette?
A standard 8 kW home solar system is about 20 panels, producing roughly 11,680 kWh per year in Lafayette at 5 sun hours/day. Your exact size depends on your household's electricity use.
Does Entergy Louisiana offer net metering?
Entergy Louisiana offers Full Retail net metering. Full retail rate.