PVGIS · SolarMapped
Solar potential in Osaka
This estimate represents one coordinate near the city center, not every roof or neighborhood.
Explore on the solar map ↗Annual values
PV output is estimated electricity from 1 kWp of installed solar panels. Irradiation is sunlight energy received per square meter on the optimally tilted panel plane; it is not electricity.
For a 5 kWp system, multiply the electricity values by five. This simple scaling does not account for roof-specific shading or equipment constraints.
Compared with the sampled-city benchmark: +2.4% (1,316kWh/kWp/year). These figures are the unweighted mean of the city locations listed below, not a national average. Two urban points do not represent an entire country, its roofs or its solar installations.
Monthly solar irradiation and PV output
Highest-output month: March · 132.8kWh/kWp/month. Lowest-output month: June · 98.9kWh/kWp/month.
| Month | Estimated PV output (kWh/kWp/month) | Solar irradiation (kWh/m²/month) |
|---|---|---|
| January | 114.9 | 136.6 |
| February | 111.6 | 134 |
| March | 132.8 | 164 |
| April | 125.9 | 160.1 |
| May | 121.7 | 159.3 |
| June | 98.9 | 132 |
| July | 101.2 | 137.3 |
| August | 115.3 | 156.4 |
| September | 102.7 | 136.7 |
| October | 110.1 | 141.6 |
| November | 103.9 | 129.2 |
| December | 109.4 | 131.5 |
More cities in Japan
Data and methodology
PVGIS 5.3 (European Commission Joint Research Centre), crystalline silicon, fixed free-standing installation, 1 kWp, 14% system losses, equator-facing panels with optimized tilt and the terrain horizon. Long-term climate estimates are not a forecast or a roof survey. Nearby buildings, trees, roof constraints, snow and local conditions can change actual output.
- Osaka — Reference coordinates: 34.69, 135.5; Climate dataset / years: PVGIS-ERA5 / 2005–2023; Data retrieved: .
PVGIS methodology · Sources and assumptions (English) · Download the underlying data (JSON)