Solar PV Analysis of Hadano, Japan
Based on the information provided, Hadano in Japan is a decent location for generating solar energy year-round. The amount of electricity generated from solar panels varies throughout the year, with the highest output during summer and spring at 5.28 kWh/day and 5.26 kWh/day respectively per kW of installed solar. During autumn and winter, it drops to 3.62 kWh/day and 3.50 kWh/day respectively.
This means that if you are looking to generate more power using solar panels, summer and spring would be your best bet in this location due to longer daylight hours and more intense sunlight compared to other seasons.
For fixed panel installations at Hadano, Kanagawa, tilting your panels towards South by about 33 degrees will maximize total yearly production from your solar PV system as it aligns better with the sun's path across the sky over a year.
As for local factors that could affect energy production, we need specific data or studies related to weather patterns or environmental conditions in Hadano which aren't provided here but generally speaking:
1) Cloudy days: Solar panels rely on sunlight so cloudy days can reduce their efficiency.
2) Dust & Dirt: Accumulation of dust or dirt on the surface of solar panels can block sunlight hence reducing their effectiveness.
3) Shade: Trees or buildings casting shadows over your installation can significantly decrease output.
4) Snowfall: In winter months snow accumulation may cover up panels blocking sunlight entirely.
To ensure greater energy production despite these potential issues:
1) Regular cleaning & maintenance can help keep dust/dirt off your panels maximizing their exposure to sunlight.
2) Choose an installation site carefully avoiding areas prone to shading throughout different times of day/year
3). If snow is common consider installing a system that allows easy access for clearing off snow manually or explore automatic solutions like heated frames etc.,
Remember these are general considerations; specific local circumstances should always be taken into account when planning a solar installation.
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 Hadano
Seasonal solar PV output for Latitude: 35.3734, Longitude: 139.2227 (Hadano, 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 Hadano, Japan
To maximize your solar PV system's energy output in Hadano, Japan (Lat/Long 35.3734, 139.2227) 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 Hadano, 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 Hadano, 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 | 41° South in Autumn | 50° 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 Hadano, 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 Hadano, 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 Hadano, Japan
Hadano, Japan is located in the Kanagawa Prefecture and is characterized by a mix of flatlands, hills, and mountains. The region is part of the Tanzawa Mountain range which includes Mount Hiru, one of the highest peaks in the area. The city itself lies in a basin surrounded by these mountains.
The topography varies greatly from urban areas to mountainous regions with dense forests. Rivers such as the Haya River run through this region providing some flatter areas along their banks.
For large-scale solar PV installations, flat or gently sloping lands are ideal. Given this criterion, urban areas or open fields on lower elevations would be more suitable within Hadano city. However, considering land availability and possible constraints like buildings or other infrastructure could be challenging within city limits.
Alternatively, deforested areas on hill slopes could also be considered if they have good sun exposure throughout the day without much shading from surrounding features like trees or mountains.
Another option could be floating solar panels on reservoirs or ponds if available and permitted for use - an approach that has been gaining popularity in Japan due to limited land availability.
However before any installation decision can be made it's important to conduct feasibility studies including detailed sunlight (irradiance) analysis since not just topography but also local climate conditions play a crucial role in determining solar power generation efficiency.
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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Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Monday 24th of June 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.
