Most solar websites either give you a vague "$10,000–$30,000" range that's useless, or they ask for your email address before showing you anything. We think that's backwards.
Your real solar cost depends on just four things: your home size, your state, your electricity bill, and the type of panels you choose. Get those right, and you can estimate within 5% of what a real installer would quote you — without a single sales call.
This guide breaks it all down. Use the calculator above for your instant estimate, then read on to understand exactly what you're paying for — and how to pay less.
How Much Do Solar Panels Cost? The Real Numbers
Let's skip the fluff. Here are the actual numbers:
The most common residential system size is 6 kW — enough to cover 90–100% of electricity for a typical 2,000 sq ft home. But your situation is different, which is why the calculator at the top of this page gives you a number specific to you.
6 Things That Affect Your Solar Price Cost Drivers
Solar Cost by System Size Full Breakdown
The right system size depends on how much electricity you use. Check your utility bill for your monthly kWh usage, then match it to the table below:
| System Size | Panels | Gross Cost | After 30% ITC | Annual Output | Best For |
|---|---|---|---|---|---|
| 3 kW | 7–9 | $8,850 | $6,195 | ~3,600 kWh | Small apartment/condo |
| 4 kW | 10–12 | $11,800 | $8,260 | ~4,800 kWh | Small home under 1,200 sq ft |
| 5 kW | 13–15 | $14,750 | $10,325 | ~6,000 kWh | Medium home 1,200–1,800 sq ft |
| 6 kW ★ | 15–18 | $17,700 | $12,390 | ~7,200 kWh | Average US home (most popular) |
| 8 kW | 20–24 | $23,600 | $16,520 | ~9,600 kWh | Large home 2,500–3,000 sq ft |
| 10 kW | 25–30 | $29,500 | $20,650 | ~12,000 kWh | Large home + EV charging |
Not sure which size you need? Use our Solar Savings Calculator — enter your monthly bill and it calculates the right system size automatically.
Solar Cost by State Top 6 States
Where you live dramatically changes what you pay. Here are the top searched states — click any to see the full guide:
What You're Actually Paying For Cost Breakdown
Here's how a typical $17,430 (6kW) system breaks down. Understanding this helps you spot overcharges instantly:
Tax Credits That Cut Your Bill Save Thousands
This is where things get exciting. The US government essentially pays 30% of your solar system — and that's just the start:
| Incentive | Who Qualifies | Savings on $17,430 System |
|---|---|---|
| Federal ITC (30%) | All US homeowners | −$5,229 |
| NY State Tax Credit (25%) | New York only | −$4,358 (up to $5k) |
| Utility Cash Rebate | Many utilities | −$500 to −$2,000 |
| SREC Program Income | IL, NJ, MD & others | $300–$500/yr ongoing |
| Property Tax Exemption | Most states | Saves $100–$400/yr |
Use our Tax Credit Calculator to see exactly how much federal and state incentives reduce your total cost based on your specific state.
Financing Options Compared Pay Less Upfront
83% of solar buyers don't pay cash. Here's how the four main financing options compare for a typical $17,430 system:
| Option | Upfront Cost | Monthly Payment | You Own It? | Get Tax Credit? |
|---|---|---|---|---|
| Cash Purchase | $12,201 | $0 | ✅ Yes | ✅ Yes |
| Solar Loan (12yr) | $0 | ~$140–$180/mo | ✅ Yes | ✅ Yes |
| Solar Lease | $0 | ~$80–$120/mo | ❌ No | ❌ No |
| PPA | $0 | Pay per kWh | ❌ No | ❌ No |
Our recommendation: if you can qualify for a solar loan, it beats leasing every time — you own the system, keep the tax credit, and build equity. Use our Financing Calculator to compare monthly payments across all options side by side.
Also check our Payback Calculator and ROI Calculator to see your full 25-year return.
Burning Questions Answered FAQ
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Use the free calculator above to get your personalized solar cost. No email, no sales call, no pressure.