Solar PV Analysis of Katsushika, Japan
Katsushika, Tokyo, Japan has a decent potential for generating solar energy year-round. The electricity output from solar panels varies across the seasons, with summer and spring being the most productive times of the year. During these periods, you can expect to generate around 5.28 and 5.26 kilowatt-hours (kWh) per day respectively for every kilowatt (kW) of installed solar power system.
In autumn and winter, the amount of energy produced decreases slightly to about 3.62 kWh/day and 3.50 kWh/day respectively per kW of installed solar power system due to shorter daylight hours and less intense sunlight.
For maximum efficiency throughout the year at this location, it's recommended that fixed panel installations are tilted at an angle of approximately 33 degrees facing southward.
Local factors that could potentially impede solar production in Katsushika include weather conditions such as frequent cloud cover or heavy rainfall which may reduce sun exposure on your panels. Additionally, any physical obstructions like tall buildings or trees might block sunlight reaching your panels.
To overcome these challenges:
1) Choose a location for installation where there's minimal shadowing during peak sun hours.
2) Regular maintenance is necessary to clean off dust or debris accumulated on the surface which can affect performance.
3) If possible, adjustable mounting systems could be used allowing changes in tilt angle according to season maximizing sunlight capture.
4) Use high-quality equipment designed to withstand adverse weather conditions ensuring continuous operation even under less than ideal situations.
Remember though that while these measures can help optimize energy production from your solar PV system they cannot completely eliminate environmental impacts on its performance.
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 Katsushika
Seasonal solar PV output for Latitude: 35.7622, Longitude: 139.8547 (Katsushika, 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 Katsushika, Japan
To maximize your solar PV system's energy output in Katsushika, Japan (Lat/Long 35.7622, 139.8547) 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 Katsushika, 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 Katsushika, 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 Katsushika, 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 Katsushika, 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 Katsushika, Japan
Katsushika is located in the eastern part of Tokyo, Japan. The topography of this area is largely urban and flat with a few undulating hills, as it lies within the Kanto Plain which is the largest plain in Japan. The region has several rivers including the Edogawa River.
In terms of suitability for large-scale solar PV installations, open and flat areas are typically preferred due to ease of installation and maintenance. Given that Katsushika is heavily urbanized, finding large open spaces might be challenging. However, rooftops of buildings can be used for installing solar panels.
For larger scale solar farms though, you may have to look beyond the immediate vicinity of Katsushika. Nearby rural or less densely populated regions such as Chiba Prefecture to the east could potentially offer more suitable locations with its relatively flat landscape and ample sunlight exposure.
However, it's important to note that feasibility also depends on other factors like local climate conditions (amount of sun exposure), land use regulations and grid connectivity among others. Therefore comprehensive feasibility studies would need to be carried out before deciding on any location.
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: Monday 8th of July 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.
