How Much Does a Single Solar Panel Cost?
A standard residential solar panel in 2025 is rated between 370W and 440W. Here are typical wholesale and installed costs per panel:
| Panel Type | Wattage | Panel Cost (wholesale) | Installed Cost (panel share) |
|---|---|---|---|
| Budget | 350–380W | $150–$200 | $400–$550 |
| Standard | 400W | $200–$280 | $550–$700 |
| Premium | 420–440W | $280–$400 | $700–$900 |
The "installed cost" column includes that panel's share of the inverter, mounting, wiring, and labour. This is the number that matters when comparing total system quotes.
Panel Prices by Country
Panel hardware costs are fairly global, but installation costs vary dramatically:
- United States — $0.60–$0.80 per watt for the panel alone; $2.40–$3.20 per watt fully installed.
- United Kingdom — £0.30–£0.50 per watt for panels; £1.50–£2.20 per watt installed.
- Australia — A$0.30–$0.50 per watt panels; A$1.00–$1.60 per watt installed. Australia has the cheapest installed solar in the English-speaking world.
- Canada — C$0.50–$0.70 per watt panels; C$2.60–$3.40 per watt installed.
The difference between countries is mostly in labour costs and installer margins — the panels themselves are manufactured by the same companies globally.
What Drives Panel Price Differences?
Not all panels are equal, and price reflects real differences:
- Efficiency — premium panels convert 22–23% of sunlight to electricity versus 19–20% for budget options. Higher efficiency means fewer panels for the same output.
- Warranty — top-tier panels (SunPower, REC, Maxeon) offer 25–40 year product warranties. Budget panels typically offer 10–15 years.
- Technology — N-type TOPCon and heterojunction (HJT) cells cost more but degrade slower and perform better in heat.
- Brand premium — established brands charge more for the same specifications.
For most homeowners, mid-range panels from manufacturers like Trina, JA Solar, Longi, or Canadian Solar offer the best value. The efficiency gap between budget and premium panels has narrowed to 2–3 percentage points.
How Many Panels Does a Typical Home Need?
The number of panels depends on your electricity consumption and your local sun hours:
- US average home (10,500 kWh/year, 4.5 sun hours): 20–25 panels (8–10 kW).
- UK average home (3,500 kWh/year, 3.0 sun hours): 8–12 panels (3–5 kW).
- Australian average home (6,500 kWh/year, 5.5 sun hours): 12–18 panels (5–7 kW).
Rather than guessing, use our solar panel calculator to get a personalised panel count based on your actual electricity usage and location.
Should You Pay More for Premium Panels?
Premium panels make financial sense in two situations:
- Limited roof space — if your usable roof area is small, higher-efficiency panels let you fit more capacity.
- Long-term hold — if you plan to stay in your home for 20+ years, the slower degradation rate of premium panels compounds into meaningful extra generation.
For most average-sized roofs, standard panels provide the best return on investment. The extra cost of premium panels rarely pays back through additional generation alone.