Muromi, Fukuoka, Japan, located at 33.5815°N, 130.3447°E in the Northern Sub Tropics, offers a relatively favorable environment for solar PV energy generation throughout the year. The seasonal variations in electricity output per kW of installed solar capacity demonstrate the location's potential for consistent energy production.

Seasonal Performance

Summer stands out as the most productive season, with an impressive 5.37 kWh/day output. Spring follows closely behind at 5.17 kWh/day, indicating that the warmer months are ideal for solar energy generation in Muromi. Autumn sees a moderate decrease in production at 4.03 kWh/day, while winter experiences the lowest output at 3.01 kWh/day.

The relatively high output during spring and summer suggests that Muromi benefits from longer daylight hours and clearer skies during these seasons. The transition seasons of spring and autumn provide steady energy production, making them valuable contributors to the overall annual yield.

Optimal Panel Installation

For fixed panel installations in Muromi, Fukuoka, the ideal tilt angle to maximize year-round solar PV production is 30 degrees facing South. This angle is calculated to capture the most sunlight throughout the year, considering the location's latitude and the sun's changing position across seasons.

Environmental Considerations

While Muromi generally offers favorable conditions for solar energy production, there are some environmental factors to consider:

1. Typhoon season: Muromi, Fukuoka, like much of Japan, can experience typhoons, typically from August to October. Strong winds and heavy rainfall during these events may temporarily reduce solar output and potentially damage poorly secured panels.
2. Humidity: The subtropical climate can lead to high humidity levels, which may slightly decrease panel efficiency and increase the risk of corrosion over time.

Preventative Measures

To mitigate these environmental challenges and ensure optimal energy production, consider the following preventative measures when installing solar PV systems in Muromi:

• Use typhoon-resistant mounting systems and high-quality, durable panels designed to withstand strong winds and heavy rainfall.
• Implement regular cleaning and maintenance schedules to combat the effects of humidity and ensure panels remain free from dirt and debris.
• Install lightning protection systems to safeguard the solar array during storms.
• Consider using micro-inverters or power optimizers to minimize the impact of partial shading or panel damage on overall system performance.

By taking these precautions, solar PV installations in Muromi can maximize their energy production potential and withstand the occasional challenging weather conditions typical of the region.

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 Muromi

Seasonal solar PV output for Latitude: 33.5815, Longitude: 130.3447 (Muromi, 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 Muromi, Japan

To maximize your solar PV system's energy output in Muromi, Japan (Lat/Long 33.5815, 130.3447) 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 Muromi, 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 Muromi, 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
17° South in Summer	39° South in Autumn	48° South in Winter	27° 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 Muromi, 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 Muromi, Japan.

Our calculation method

1. Solar Position:
   We determine the Sun's position on the Winter solstice using the location's latitude and solar declination.
2. Shadow Projection:
   We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle.
3. 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 Muromi, Japan

The topography around Muromi, Japan, located at coordinates 33.5815 latitude and 130.3447 longitude, is characterized by a mix of urban landscapes and natural features. Muromi is situated in the western part of Fukuoka City, on the northern coast of Kyushu Island. The area is primarily flat, with some gentle hills and small elevations scattered throughout the region. To the east of Muromi, the terrain gradually transitions into the more densely populated urban center of Fukuoka City. This area is predominantly flat, with numerous buildings, roads, and infrastructure typical of a major metropolitan area. The coastline to the north features sandy beaches and small bays, providing a natural border between land and sea. Moving south and west from Muromi, the landscape becomes slightly more varied. Low-lying hills begin to appear, interspersed with small valleys and flat areas. These hills are generally not very steep or high, rarely exceeding 100 meters in elevation. The terrain in this direction is a mix of residential areas, small farms, and patches of forested land.

Potential Areas for Large-Scale Solar PV

When considering areas near Muromi that would be most suited to large-scale solar photovoltaic (PV) installations, several factors come into play. The ideal locations would have ample open space, minimal shading, and relatively flat terrain to reduce installation costs and maximize sun exposure. One potential area for solar PV development could be the slightly elevated regions to the south and southwest of Muromi. These areas often have clearer skies and less urban development, which could provide more unobstructed space for solar panels. The gentle slopes of the low hills in this direction could also be advantageous, as they may naturally face towards the sun's path, potentially increasing energy generation efficiency. Another possibility lies in the more rural areas to the west of Muromi. These locations typically have larger open spaces that could accommodate extensive solar arrays. The mix of flat land and low hills in this region could offer flexibility in panel placement and orientation. It's important to note that while these areas may have suitable topography for solar PV installations, other factors such as land availability, local regulations, and grid connectivity would also need to be considered. Additionally, any large-scale solar project would need to be carefully planned to minimize environmental impact and ensure compatibility with existing land uses in the region.

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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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.