How Much Does Solar Installation Cost Per Watt in the U.S.?
Thinking about going solar? One of the first questions homeowners ask is:
“How much does solar installation cost per watt?”
This is the gold standard for comparing solar quotes, helping you see whether you’re getting a fair deal—and how fast you’ll see a return on investment.
Average Solar Cost Per Watt in the U.S.
As of 2025, the average cost of solar installation in the United States ranges between $2.50 and $3.00 per watt prior to solar incentives, providing a reliable benchmark for homeowners evaluating quotes.”
Here’s what that looks like in real-world numbers:
| System Size | Average Cost Before Tax Credit (30%) | After Credit |
|---|---|---|
| 5 kW | $12,500–$17,500 | $8,750–$12,250 |
| 6 kW | $15,000–$21,700 | $10,500–$15,200 |
| 10 kW | $25,000–$36,200 | $17,500–$25,300 |
After incentives, many homeowners end up paying closer to $2.00/W or less.
What Affects Solar Cost Per Watt?
Your actual price per watt depends on a few key factors:
- System size → Larger systems = lower cost per watt.
- Type of panels → Premium, high-efficiency panels cost more.
- Roof complexity → Steep, shaded, or tiled roofs add labor costs.
- Location → Local labor rates, permitting, and state incentives.
- Installer reputation → Top installers may charge slightly more but usually include stronger warranties.
Why “Cost Per Watt” Isn’t Everything
Two homeowners could both pay $2.80/W, but get completely different value. Here’s why:
- One installer may include 25-year warranties and free monitoring.
- Another may use lower-quality inverters or provide limited service.
- Financing options (loans, leases, PPAs) can change long-term savings.
Always look beyond the number. Compare equipment, warranties, and customer service—not just $/W.
How to Find the Best Solar Installers Near You
Typing “solar installers near me” into Google is only the first step. To get the best deal, make sure you:
- Check reviews on Google, Yelp, and EnergySage.
- Request itemized quotes that show total cost per watt.
- Compare warranties—aim for 25 years on panels & 10+ on labor.
- Verify certifications (like NABCEP) for installer credibility.
- Get at least 3 quotes to see who offers the best value.
Ready to go solar? Don’t settle for a ballpark estimate. Request a free custom quote from local solar installers near you today and see exactly what you’ll pay per watt.
Get A Quote
The Bottom Line
- Average solar installation cost in the U.S. (2025): $2.50–$3.00/W before incentives.
- After the 30% federal tax credit: closer to $2.00/W or less.
- Typical 6–8 kW systems cost $15K–$24K before incentives, but save homeowners tens of thousands on electricity over 25+ years.
If you want the most accurate price for your home, it’s time to talk to a professional. Find trusted solar installers near you, compare per-watt costs, and take the first step toward lower bills and clean energy.