Solar PV Analysis of Miyazaki, Japan
Miyazaki, Japan, is a decent location for year-round solar energy production. Solar power generation relies on sunlight, and the amount of electricity produced changes with the seasons due to varying amounts of sunlight. In Miyazaki, you can expect to generate around 5.25 kilowatt-hours (kWh) per day in summer for each kilowatt (kW) of installed solar panels. This decreases slightly in autumn to about 4.29 kWh/day, drops further in winter to around 3.47 kWh/day and then rises again in spring to approximately 4.68 kWh/day.
The best time of year for generating solar energy at this location would be during the summer when there are more hours of daylight and stronger sun rays than other seasons.
For a fixed panel installation at this location, tilting the panels at an angle facing 30 degrees South will help maximize total yearly electricity production from your solar photovoltaic system.
There may be environmental or local factors that could impact solar production here though. For instance, Miyazaki has a subtropical climate which means it experiences high humidity and heavy rainfall especially during the rainy season (June - July). These weather conditions could reduce sunlight exposure and hence affect your system's efficiency.
To mitigate these potential issues when installing solar panels here:
1) Choose high-quality panels known for their performance under different weather conditions.
2) Install them at an optimal angle as mentioned earlier so they capture maximum sunlight throughout the year.
3) Regular cleaning and maintenance are key as dirt or debris on your panels can block sunlight.
4) Consider setting up a monitoring system that alerts you if there are significant dips in power output so you can address any issues promptly.
In summary: While Miyazaki isn't perfect due its seasonal variations in sunshine hours particularly during rainy months; with careful planning and regular maintenance one should still see reasonable returns from their investment into Solar PV.
Note: The Northern Sub Tropics extend from 23.5° latitude North up to 35° 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 Miyazaki
Seasonal solar PV output for Latitude: 31.9065, Longitude: 131.4185 (Miyazaki, 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 30° South in Miyazaki, Japan
To maximize your solar PV system's energy output in Miyazaki, Japan (Lat/Long 31.9065, 131.4185) throughout the year, you should tilt your panels at an angle of 30° 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 Miyazaki, 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 Miyazaki, Japan. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 30° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 16° South in Summer | 37° South in Autumn | 47° South in Winter | 25° 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 Miyazaki, 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 Miyazaki, 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 Miyazaki, Japan
Miyazaki is located on the southeastern coast of Kyushi, Japan. The topography of this region is characterized by a mix of coastal plains and mountainous terrain to the west. The city itself lies in a fertile plain between the ocean and mountains, with several rivers running through it.
Considering solar PV installations, flat areas with ample sunlight exposure are ideal. Thus, coastal plains around Miyazaki could be suitable for such projects due to their relatively flat terrain and good sunlight conditions. However, factors like land use constraints (agricultural activities, urban development etc.) should also be considered.
In addition to this, some parts of the mountainous regions might also be considered for solar PV installations if they have good sun exposure throughout the year. But issues related to installation costs and accessibility can arise in these areas.
Lastly, large-scale floating solar panels ("floatovoltaics") could potentially be implemented on reservoirs or other bodies of water in or near Miyazaki – this would save valuable land space while providing clean energy.
A detailed feasibility study including aspects like local climate conditions (cloud cover frequency), land availability & use restrictions as well as grid connectivity would help identify most suited locations for large scale solar PV around Miyazaki.
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 April 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.
