Solar PV Analysis of Oshiage, Japan
Oshiage, Tokyo, Japan is a somewhat suitable location for year-round energy production using solar photovoltaic (PV) systems. The amount of electricity you can generate from each kilowatt of installed solar power varies with the seasons: it's highest in summer and spring at about 5.28 and 5.26 kilowatt-hours per day respectively, and lower in autumn and winter at approximately 3.62 and 3.50 kWh/day respectively.
To maximize your yearly solar energy output in Oshiage, Tokyo, you should tilt your panels towards the south at an angle of around 33 degrees. This will ensure that they're positioned to capture as much sunlight as possible throughout the year.
However, there could be some local factors that might affect how much energy you can produce from your solar PV system in this area:
1) Weather Conditions: Like any other place, Oshiage has its fair share of cloudy or rainy days which may reduce the amount of sunlight reaching your panels thereby reducing their output.
2) Shadows: Buildings or trees surrounding your property could cast shadows on your panels especially during morning and evening hours when the sun is low.
3) Dust & Debris: Accumulation of dust or debris on panel surfaces can block sunlight thereby reducing their efficiency.
To overcome these challenges:
1) You may need to clean your panels regularly to remove any accumulated dust or debris.
2) Trimming nearby trees to minimize shading would also be beneficial.
3) Finally, consider using a tracking system that moves the panels throughout the day so they always face directly towards the sun.
In conclusion, while there are some challenges with generating solar power in Oshiage due to weather conditions and potential obstructions like buildings or trees; with proper installation techniques such as optimal tilting angle combined with regular maintenance like cleaning & trimming surrounding vegetation - it's still a viable option for renewable energy generation.
Note: The Northern Temperate Zone extends from 35° latitude North up to 66.5° latitude.
So far, we have conducted calculations to evaluate the solar photovoltaic (PV) potential in 187 locations across Japan. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Japan by location
Solar output per kW of installed solar PV by season in Oshiage
Seasonal solar PV output for Latitude: 35.7268, Longitude: 139.833 (Oshiage, Japan), based on our analysis of 8760 hourly intervals of solar and meteorological data (one whole year) retrieved for that set of coordinates/location from NASA POWER (The Prediction of Worldwide Energy Resources) API:
Ideally tilt fixed solar panels 33° South in Oshiage, Japan
To maximize your solar PV system's energy output in Oshiage, Japan (Lat/Long 35.7268, 139.833) throughout the year, you should tilt your panels at an angle of 33° South for fixed panel installations.
As the Earth revolves around the Sun each year, the maximum angle of elevation of the Sun varies by +/- 23.45 degrees from its equinox elevation angle for a particular latitude. Finding the exact optimal angle to maximise solar PV production throughout the year can be challenging, but with careful consideration of historical solar energy and meteorological data for a certain location, it can be done precisely.
We use our own calculation, which incorporates NASA solar and meteorological data for the exact Lat/Long coordinates, to determine the ideal tilt angle of a solar panel that will yield maximum annual solar output. We calculate the optimal angle for each day of the year, taking into account its contribution to the yearly total PV potential at that specific location.
Seasonally adjusted solar panel tilt angles for Oshiage, Japan
If you can adjust the tilt angle of your solar PV panels, please refer to the seasonal tilt angles below for optimal solar energy production in Oshiage, Japan. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 33° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 20° South in Summer | 42° South in Autumn | 51° South in Winter | 29° South in Spring |
Our recommendations take into account more than just latitude and Earth's position in its elliptical orbit around the Sun. We also incorporate historical solar and meteorological data from NASA's Prediction of Worldwide Energy Resources (POWER) API to assign a weight to each ideal angle for each day based on its historical contribution to overall solar PV potential during a specific season.
This approach allows us to provide much more accurate recommendations than relying solely on latitude, as it considers unique weather conditions in different locations sharing the same latitude worldwide.
Calculate solar panel row spacing in Oshiage, Japan
We've added a feature to calculate minimum solar panel row spacing by location. Enter your panel size and orientation below to get the minimum spacing in Oshiage, Japan.
Our calculation method
- Solar Position:
We determine the Sun's position on the Winter solstice using the location's latitude and solar declination. - Shadow Projection:
We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle. - Minimum Spacing:
We add the shadow length to the horizontal space occupied by tilted panels.
This approach ensures maximum space efficiency while avoiding shading during critical times, as the Winter solstice represents the worst-case scenario for shadow length.
Topography for solar PV around Oshiage, Japan
Oshiage is a district in Sumida, Tokyo, Japan. It is located on the eastern side of Tokyo and it's characterized by an urban landscape with commercial and residential buildings. The topography is relatively flat as it's part of the larger Tokyo metropolitan area.
The areas most suited for large-scale solar PV installations would be those with large open spaces that receive plenty of sunlight throughout the year. However, given Oshiage’s dense urban environment, there may be limited options within the immediate vicinity.
One potential option could be to install solar panels on rooftops or walls of existing buildings, known as Building-Integrated Photovoltaics (BIPV). This can turn underutilized spaces into renewable energy sources without requiring additional land.
For ground-mounted solar farms which require larger tracts of land, they might need to look further away from central Tokyo where there are more open spaces available. Areas such as Chiba Prefecture or Ibaraki Prefecture to the east/northeast of Tokyo could potentially offer suitable sites due to their more rural landscapes and lower building density.
Furthermore, considering Japan's advanced technology in floating solar power plants (known as "floatovoltaics"), reservoirs or other bodies of water could also serve as potential locations for large-scale solar PV installations.
Please note that actual suitability would depend on a detailed site assessment including factors like local climate conditions (specifically sunshine hours), land use regulations and grid connectivity among others.
Japan solar PV Stats as a country
Japan ranks 3rd in the world for cumulative solar PV capacity, with 74,191 total MW's of solar PV installed. This means that 8.30% of Japan's total energy as a country comes from solar PV (that's 9th in the world). Each year Japan is generating 590 Watts from solar PV per capita (Japan ranks 4th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Japan?
Yes, there are several incentives for businesses wanting to install solar energy in Japan. These include the Feed-in Tariff (FIT) program, which provides a fixed price for electricity generated from renewable sources such as solar; subsidies and grants from local governments; tax credits; and loans with low interest rates. Additionally, businesses may be eligible for additional incentives depending on their location and type of installation.
Do you have more up to date information than this on incentives towards solar PV projects in Japan? Please reach out to us and help us keep this information current. Thanks!
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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Friday 3rd of May 2024
Last Updated: Monday 21st of July 2025
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Compare this location to others worldwide for solar PV potential
The solar PV analyses available on our website, including this one, are offered as a free service to the global community. Our aim is to provide education and aid informed decision-making regarding solar PV installations.
However, please note that these analyses are general guidance and may not meet specific project requirements. For in-depth, tailored forecasts and analysis crucial for feasibility studies or when pursuing maximum ROI from your solar projects, feel free to contact us; we offer comprehensive consulting services expressly for this purpose.
Helping you assess viability of solar PV for your site
Calculate Your Optimal Solar Panel Tilt Angle: A Comprehensive Guide
Enhance your solar panel's performance with our in-depth guide. Determine the best tilt angle using hard data, debunk common misunderstandings, and gain insight into how your specific location affects solar energy production.
