Solar Energy Potential in Hikawadai, Japan

Hikawadai, located in Tokyo, Japan, presents a reasonably good location for solar PV energy generation throughout the year. This northern temperate zone site shows distinct seasonal variations in solar energy production potential. The location experiences its highest solar production during the summer months, with an average of 5.27 kWh per day for each kilowatt of installed solar capacity. Spring follows closely behind with 5.22 kWh/day, making spring and summer the prime seasons for solar energy generation in Hikawadai. Autumn and winter show noticeably lower production rates, with 3.56 kWh/day and 3.44 kWh/day respectively. This represents approximately a 35% reduction compared to the peak summer production, which is typical for locations in the Northern Temperate Zone.

Optimal Panel Installation

For fixed solar panel installations in Hikawadai, the ideal tilt angle to maximize year-round energy production is 33 degrees facing South. This carefully calculated angle optimizes the capture of available sunlight throughout the changing seasons, balancing the higher summer sun with the lower winter sun position.

Environmental and Weather Considerations

Several environmental factors could impact solar production in Hikawadai:

• Typhoon season (typically August-October) can bring strong winds and heavy rainfall, potentially damaging poorly secured panels
• Heavy snowfall in winter months may temporarily cover panels, reducing output
• Urban air pollution and dust accumulation common to Tokyo metropolitan area can gradually decrease panel efficiency
• Surrounding tall buildings or trees may cast shadows on panels at certain times of day

To mitigate these challenges, solar installations in Hikawadai should incorporate strong mounting systems rated for typhoon-force winds, include a slight additional tilt (beyond the optimal 33 degrees) to help shed snow, and implement regular cleaning schedules. Additionally, careful site assessment for potential shading issues and possibly incorporating microinverters or power optimizers can help maximize energy harvest despite occasional partial shading. Overall, with proper installation techniques addressing these local factors, Hikawadai offers a viable location for solar PV energy generation, with particularly strong potential during the spring and summer months.

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 Hikawadai

Seasonal solar PV output for Latitude: 35.7631, Longitude: 139.6554 (Hikawadai, 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 Hikawadai, Japan

To maximize your solar PV system's energy output in Hikawadai, Japan (Lat/Long 35.7631, 139.6554) 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 Hikawadai, 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 Hikawadai, 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 Hikawadai, 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 Hikawadai, 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 Hikawadai, Japan

Hikawadai is situated in the eastern part of Tokyo Metropolis, Japan, nestled within the broader Nerima ward. The topography of this area is characterized predominantly by its location on the Musashino Plateau, a relatively flat elevated plain that covers much of western and central Tokyo. This plateau gradually slopes downward from west to east, with Hikawadai positioned at a moderate elevation compared to surrounding Tokyo areas. The landscape around Hikawadai features subtle undulations rather than dramatic terrain changes. The area sits on what geologists refer to as the Musashino Terrace, formed by ancient deposits from the Tama River system. This creates a generally level surface with occasional gentle rises and shallow depressions. The elevation in Hikawadai typically ranges between 30-40 meters above sea level, which is representative of this section of the Musashino Plateau.

Urban Development Impact on Topography

The natural topography of Hikawadai has been significantly modified by urban development over many decades. The area is densely built-up with residential neighborhoods, commercial zones, and transportation infrastructure. Original landforms have been smoothed, leveled, or otherwise altered to accommodate Tokyo's urban expansion. Small-scale variations in elevation are now often marked by street slopes, retaining walls, and the tiered construction of buildings rather than natural features. Natural drainage patterns have largely been replaced by engineered systems, though the general east-sloping tendency of the land still influences the overall drainage direction. Some subtle valley-like depressions can still be detected in the street layout and in the few remaining open spaces.

Surrounding Areas with Solar Potential

When considering nearby areas suited for large-scale solar photovoltaic installations, several factors beyond mere topography must be considered, including land availability, existing development, and regional planning restrictions. The immediate vicinity of Hikawadai itself offers limited opportunities for large-scale solar development due to intensive urbanization. However, looking slightly further afield, more promising locations emerge: The flatter areas extending eastward toward Edogawa and portions of Chiba Prefecture present more favorable conditions for large solar installations. These eastern regions feature more extensive open spaces, including some former industrial zones and reclaimed land areas along Tokyo Bay that could potentially be repurposed. Areas to the north, in parts of Saitama Prefecture such as Kawaguchi and Toda, contain some industrial zones and open spaces that might accommodate larger solar installations. The relatively flat terrain in these northern suburban regions would require minimal grading for solar array placement. Western regions toward Tama area, while more elevated with some rolling hills, contain pockets of less densely developed land that might be suitable. Some of these western areas feature larger lot sizes and more open space compared to central Tokyo districts.

Topographical Considerations for Solar Development

The generally level nature of the Musashino Plateau provides favorable baseline conditions for solar PV installation, as minimal earthwork would be required to create suitable foundations for solar arrays. The subtle east-facing slope that characterizes much of the region can actually be advantageous for solar panel orientation. Drainage considerations would be important for any large-scale installation, particularly in the eastern lowland areas where the water table may be higher. The western portions of the plateau offer better natural drainage due to their higher elevation and the general eastward slope of the land. Shadow effects from the region's mountains are minimal, as major mountain ranges like the Okutama Mountains lie quite distant to the west. However, in the more developed areas, shadow casting from high-rise buildings and other structures would need careful assessment in site selection processes. The most significant limitation for large-scale solar development near Hikawadai is not the topography itself, but rather the scarcity of available undeveloped land in this heavily urbanized region of Tokyo. Any substantial solar projects would likely need to utilize brownfield sites, repurposed industrial areas, or incorporate solar into existing structures rather than finding pristine open spaces for new development.

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.