Solar Cost & Savings Guide: What to Expect
What does a solar system actually cost — and how much will you save? This guide breaks down real installation prices, monthly savings estimates, financing options, and how to compare quotes so you don’t overpay.
How much does solar cost?
Direct answer
The average cost of a home solar system in the US is $28,000–$32,000 before incentives, or $19,600–$22,400 after the 30% federal tax credit. For most homes that works out to $2.50–$3.50 per watt installed.
That’s a wide range — and for good reason. Your final cost depends on your home’s energy needs, your roof type, your location, and which installer you choose. The sections below break down each variable so you know exactly what you’re paying for.
Solar savings calculator
Estimate your solar savings
Est. system cost
$21,000
after 30% tax credit
Annual savings
$1,440
avg per year
Payback period
14.6 yrs
break-even point
Estimates based on 2026 national averages. Get a real quote to confirm your numbers.
Cost by system size
The right system size depends on how much electricity you use. Most US homes need a 6kW–12kW system. The 8kW system is the most commonly installed size for a typical 2,000 sq ft home.
| System size | Avg cost (before ITC) | After 30% ITC | Powers homes up to |
|---|---|---|---|
| 4 kW | $11,200 | $7,840 | ~800 sq ft |
| 6 kW | $16,800 | $11,760 | ~1,500 sq ft |
| 8 kW (most common) | $22,400 | $15,680 | ~2,000 sq ft |
| 10 kW | $28,000 | $19,600 | ~2,500 sq ft |
| 12 kW | $33,600 | $23,520 | ~3,000+ sq ft |
Financing options
How you pay for solar affects your total cost, monthly payment, and long-term savings. These are the three main paths.
Solar loan
You own the system and claim the tax credit
Monthly payment often less than your current bill
Increases home resale value
Requires good credit (650+)
You are responsible for maintenance
Best for: homeowners who qualify and plan to stay 7+ years
Solar lease
No upfront cost
Installer handles all maintenance
You don’t own the system
Tax credit goes to the installer, not you
Lower long-term savings overall
Best for: homeowners who want simplicity over maximum savings
Power Purchase Agreement (PPA)
No upfront cost
You only pay for the power the panels produce
You don’t own the system
Can complicate selling your home
Rates can escalate over the contract term
Best for: homeowners in states with very high utility rates
How to compare solar quotes
Getting multiple quotes is the single easiest way to avoid overpaying. Solar pricing can vary by $5,000–$10,000 between installers for the exact same system. Here’s what to look at when comparing.
Price per watt, not total price. Installers quote different system sizes, so compare cost-per-watt to level the playing field. A fair price in 2026 is $2.50–$3.50/watt.
Panel brand and efficiency. Higher efficiency panels cost more upfront but produce more power from the same roof space. Ask for the panel model name and look up its efficiency rating.
Inverter type. String inverters are cheaper; microinverters cost more but perform better when panels are partially shaded. Ask which type is included in the quote.
Warranty terms. Look for a 25-year panel performance warranty and at least a 10-year workmanship warranty from the installer.
Production estimate vs your usage. The quote should include an annual kWh production estimate. Compare it to your actual annual usage from a recent utility bill to make sure the system is sized correctly.
Common questions
How much do solar panels cost per watt?
The national average is $2.50–$3.50 per watt installed in 2026. A 10kW system at $3/watt costs $30,000 before the federal tax credit, or $21,000 after it.
What is the average monthly savings from solar?
Most homeowners save $100–$150 per month, depending on their electricity rate and system size. In high-rate states like California and New York, savings can exceed $200/month.
Does solar completely eliminate my electricity bill?
Not always. Most systems are sized to offset 80–100% of your usage, but you’ll likely still pay a small monthly connection fee to your utility of $10–$20. A battery storage system can get you closer to full independence.
How many quotes should I get?
At least three. Solar pricing varies significantly between installers — sometimes by $5,000–$10,000 for the same system. Getting multiple quotes is the easiest way to avoid overpaying.
What should I watch out for in a solar quote?
Compare price per watt, not total price — system sizes vary. Check the panel brand and efficiency rating, the inverter type, the warranty terms, and whether the quoted production estimate matches your actual usage.
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