Monocrystalline
- Efficiency: 19–22%
- Appearance: Black, uniform
- Cost: Premium
- Lifespan: 25–30+ years
Updated May 2026 · Incentives included
Solar Panel Cost Calculator
Estimate solar panel installation costs, monthly energy savings, tax credits, and payback period for your home.
Average solar installation: $12,000–$35,000
Quick Solar Savings Estimate
Enter your bill, home size, city, and roof type — results update instantly.
Advanced Solar Cost Calculator
Fine-tune usage, roof condition, sun exposure, battery storage, financing, and ZIP for localized results.
How Solar Panels Work
- Panels generate electricity from sunlight on your roof.
- The inverter converts DC power to usable AC for your home.
- Your home uses solar first; excess can feed the grid or charge a battery.
- The utility meter tracks imports and exports (net metering where available).
Solar Cost by System Size
Typical installed price ranges before federal tax credit (updates with city selected above)
| System size | Avg installed cost |
|---|
Solar Savings by State
Estimated monthly savings and payback for a $220/month bill · asphalt roof · full sun
| State | Avg savings | Payback |
|---|
Solar Panel Types
Compare efficiency, appearance, cost, and lifespan
Polycrystalline
- Efficiency: 15–17%
- Appearance: Blue speckled
- Cost: Mid-range
- Lifespan: 20–25 years
Thin-film
- Efficiency: 10–13%
- Appearance: Low-profile, flexible
- Cost: Lower (more area needed)
- Lifespan: 15–20 years
Solar Battery Storage
Backup batteries keep essentials running during outages and can reduce peak-time grid use. Tesla Powerwall and similar systems typically add $10,500–$15,000 installed per unit in 2026.
- Backup power: Lights, fridge, Wi‑Fi during grid outages
- Self-consumption: Store daytime solar for evening use
- ROI: Strongest in high-outage areas and time-of-use rate plans
- Pairing: Most batteries qualify for the 30% federal tax credit when installed with solar
Toggle battery storage in the advanced calculator to see updated totals.
+$10,500–$15,000
Typical add-on per battery (e.g. Powerwall-class)
Roof Suitability for Solar
Best roof types
- Asphalt shingles (most common, cost-effective mounts)
- Standing seam metal (clamp mounts, no penetrations)
- New or sound composite roofs under 15 years old
Less ideal roofs
- Aging tile roofs needing fragile-tile mounts
- Heavy shade from trees or north-facing only slopes
- Roofs due for replacement within 5 years — replace first
Solar Financing Options
| Financing | Upfront cost | Ownership | Tax credit |
|---|---|---|---|
| Cash purchase | High | Full | Yes — 30% federal ITC |
| Solar loan | Medium | Full | Yes — homeowner claims ITC |
| Solar lease | Low | Limited | No — lessor typically claims |
| PPA | Very low | None | No — pay per kWh produced |
Solar Payback & ROI
Typical ownership timeline after incentives
Years 1–7
System payback
Monthly bill savings and tax credits recover your net investment. Payback is fastest in high-sun states with rates above $0.14/kWh.
Years 8–25
Net energy savings
After payback, most savings go straight to your pocket — often $1,200–$2,400+ per year for decades with minimal maintenance.
Solar vs. Utility Costs
Utility rates have risen roughly 2–4% per year nationally over the past decade. Locking in solar production shifts you from renting power to owning capacity.
- Rising electricity prices favor earlier adoption
- Long-term inflation protection on energy
- Stability of ownership vs. rate hikes
Incentives & Tax Credits
Federal solar tax credit
30% ITC on eligible equipment and installation through 2032 for owned systems.
State rebates
Varies by state — California, New York, and others offer additional rebates or SRECs.
Utility incentives
Some utilities offer per-watt rebates or performance payments — check your ZIP.
Net metering
Export credits offset nighttime use where programs remain available.
Solar Cost Calculator FAQs
How much do solar panels cost?
Solar panel installation typically costs $12,000–$35,000 nationally in 2026 before incentives. An average 8 kW system often lands near $18,000–$27,000 installed; after the 30% federal tax credit, net cost is commonly $12,600–$18,900.
Are solar panels worth it?
Solar is often worth it when payback is under 10 years and you plan to stay in the home 7+ years. High sun states with bills above $150/month frequently see 6–9 year payback after incentives.
How long is the payback period?
Most homeowners see 6–12 years payback after the federal tax credit. Use our calculator for a localized estimate by bill, roof, and shade.
Do solar panels increase home value?
Owned solar often adds resale value — studies cite roughly 4% average home value increase where systems are owned outright and transferable.
What happens during outages?
Grid-tied solar shuts off during outages unless you have a battery or special backup inverter. Batteries add cost but provide outage resilience — see battery storage.