Solar panels in Japan
What a typical 6 kWp home system produces, saves and costs in Japan in 2026, on free government climate data (PVGIS). Run the numbers for your own roof below.
Is solar worth it in Japan?
A 6 kWp system is a common size for a family home. The figures above use Japan’s typical install cost, electricity price and export rules, then model 25 years of savings. They are an estimate, not a quote: your roof, orientation and shading move the result, which is what the calculator works out for your exact address.
| What we assumed for Japan | |
|---|---|
| System cost (net of incentives) | ¥1,500,000 |
| Electricity price (import) | 31.00 JPY/kWh |
| Export / feed-in rate | 14.58 JPY/kWh |
| Incentive modelled | No national capital grant -- support is the FIT export tariff (municipal subsidies vary, not modelled) (if you qualify) |
| 25-year lifetime profit (NPV) | ¥705,014 |
For the incentives, tariffs and the 2026 rule changes in detail, read our Japan solar guide.
Estimate only, not a quote. Figures use local climate data and average tariffs; your installer’s quote will be exact.
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