Solar PV Analysis of Adachi, Japan
Adachi, Japan is located in the Northern Temperate Zone and has a relatively good potential for solar energy production throughout the year. The amount of electricity that can be produced from solar panels varies depending on the season. In summer and spring, each kilowatt (kW) of installed solar panel capacity can produce about 5.28 and 5.26 kilowatt-hours (kWh) per day respectively, which are quite high amounts of energy. This means these two seasons are ideal times to generate solar power at this location.
During autumn, each kW of installed solar panel capacity can produce around 3.62 kWh/day while in winter it's slightly less at approximately 3.50 kWh/day; these are lower compared to summer and spring but still decent amounts.
To get the most out of your solar panels year-round at this location, you should tilt them towards south at an angle of 33 degrees from horizontal level; this is because Adachi is located in the northern hemisphere where tilting panels towards south allows them to capture more sunlight over the course of a day.
As for environmental or weather factors that could affect your ability to generate electricity from sunlight in Adachi: Japan experiences seasonal monsoons with heavy rainfall which could potentially reduce sunlight exposure for extended periods during certain parts of the year, particularly during June and July known as Tsuyu season or rainy season in Japan.
Additionally, dust accumulation on panels may also reduce their efficiency if not cleaned regularly; so it would be beneficial to have some sort cleaning mechanism or routine maintenance plan set up for your installation - whether manual or automated - especially considering Tokyo's urban environment which might contribute more dust particles than rural areas due its higher population density and traffic levels.
Finally, while rare but worth mentioning: earthquakes could pose risks too given how common they are across Japan including Tokyo area where Adachi district is part off; so ensuring your installation complies with local building codes and standards that account for seismic activity would be crucial to prevent potential damage or loss of your solar panels during such events.
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 Adachi
Seasonal solar PV output for Latitude: 35.7584, Longitude: 139.8073 (Adachi, 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 Adachi, Japan
To maximize your solar PV system's energy output in Adachi, Japan (Lat/Long 35.7584, 139.8073) 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 Adachi, 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 Adachi, 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 Adachi, 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 Adachi, 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 Adachi, Japan
Adachi is a special ward located in Tokyo Metropolis, Japan. The area is largely flat and urbanized, with a few parks and green spaces scattered throughout. As it's part of the Greater Tokyo Area, it's one of the most densely populated regions in the world.
When considering large-scale solar photovoltaic (PV) installations, factors such as sunlight exposure, land availability and local regulations need to be taken into account. In an urban setting like Adachi or greater Tokyo region where available land might be limited due to dense population and buildings, rooftops can serve as potential sites for solar PV systems.
However, if we are looking at larger scale operations outside of the city areas - relatively flatter regions with good sunlight exposure would be ideal. Areas towards eastern Chiba Prefecture or southern Ibaraki Prefecture may have more suitable open lands for these purposes.
It should also be noted that Japan has strict regulations concerning land use and environmental impact assessments which must be considered before any large-scale renewable energy project can move forward.
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.
