Solar PV Analysis of Wong Tai Sin, Hong Kong
Wong Tai Sin, Hong Kong, located at 22.3476°N, 114.1736°E, offers a favorable environment for solar energy generation throughout the year. Situated in the tropics, this location benefits from consistent sunlight and experiences seasons characterized more by wet and dry periods rather than significant temperature variations.
Seasonal Solar Performance
Solar PV systems in Wong Tai Sin demonstrate strong performance across all seasons. Summer yields the highest output at 5.49 kWh per day for each kW of installed capacity. Spring follows closely with 5.40 kWh/day, while autumn produces 4.95 kWh/day. Even during winter, the output remains substantial at 4.40 kWh/day.
The relatively small variation between seasons indicates that solar energy generation is viable year-round in Wong Tai Sin. The peak production period spans from late spring through early autumn, making it an ideal time for maximizing solar energy harvesting.
Optimal Panel Orientation
For fixed panel installations in Wong Tai Sin, the ideal tilt angle to maximize year-round solar production is 20 degrees facing South. This orientation allows panels to capture the most sunlight throughout the year, accounting for the location's latitude and the Earth's elliptical orbit.
Environmental Considerations
While Wong Tai Sin's tropical climate is generally favorable for solar energy, there are some environmental factors to consider:
- Typhoons: Hong Kong experiences typhoons, which can potentially damage solar installations.
- Air pollution: Urban air pollution in Hong Kong may slightly reduce solar panel efficiency.
To mitigate these challenges, solar installations should incorporate robust mounting systems capable of withstanding high winds. Regular cleaning of panels can help maintain efficiency in the face of air pollution. Additionally, using high-quality, durable panels designed for tropical climates can ensure optimal performance and longevity.
Overall, Wong Tai Sin presents an excellent location for solar PV installations, with consistent year-round production and only minor environmental challenges that can be effectively managed with proper planning and maintenance.
Note: The Tropics are located between 23.5° North and -23.5° South of the equator.
So far, we have conducted calculations to evaluate the solar photovoltaic (PV) potential in 47 locations across Hong Kong. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Hong Kong by location
Solar output per kW of installed solar PV by season in Wong Tai Sin
Seasonal solar PV output for Latitude: 22.3476, Longitude: 114.1736 (Wong Tai Sin, Hong Kong), 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 20° South in Wong Tai Sin, Hong Kong
To maximize your solar PV system's energy output in Wong Tai Sin, Hong Kong (Lat/Long 22.3476, 114.1736) throughout the year, you should tilt your panels at an angle of 20° 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 Wong Tai Sin, Hong Kong
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 Wong Tai Sin, Hong Kong. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 20° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 6° South in Summer | 28° South in Autumn | 37° South in Winter | 15° 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 Wong Tai Sin, Hong Kong
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 Wong Tai Sin, Hong Kong.
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 Wong Tai Sin, Hong Kong
The area around Wong Tai Sin in Hong Kong is characterized by a mix of urban development and hilly terrain. Wong Tai Sin itself is located in a relatively flat area surrounded by densely populated residential and commercial districts. However, as you move away from the immediate urban center, the landscape becomes more varied.
To the north and northeast of Wong Tai Sin, the terrain gradually rises into the foothills of the Lion Rock Country Park. This area features steep slopes and forested hillsides, with some peaks reaching heights of over 400 meters. The famous Lion Rock itself dominates the skyline in this direction.
To the south and southeast, the land is generally flatter, transitioning into the more heavily urbanized areas of Kowloon. This region is densely packed with high-rise buildings and infrastructure, leaving little open space.
The western side of Wong Tai Sin is bordered by the busy urban districts of Kowloon City and Sham Shui Po, which are also relatively flat but highly developed.
Regarding areas suitable for large-scale solar PV installations, the options are somewhat limited due to Hong Kong's dense urban development and hilly terrain. However, some potential locations could include:
- The rooftops of large industrial buildings or shopping centers in the nearby industrial areas of Kwun Tong or Kowloon Bay. These flat, expansive roofs could provide suitable space for solar panels.
- Reclaimed land areas along the coast, such as the former Kai Tak Airport site, which is currently undergoing redevelopment. Large, open spaces in this area could potentially accommodate solar installations.
- Some of the less steep hillsides in the nearby country parks, although this would likely face significant environmental and regulatory challenges.
- Covered reservoirs in the region, such as the Kowloon Reception Reservoir, which could potentially be fitted with floating solar panels.
It's important to note that while these areas might be physically suitable, implementing large-scale solar PV projects in Hong Kong faces numerous challenges, including limited available land, strict regulations, and competition with other land uses. Any significant solar development would likely require careful planning and integration with existing urban infrastructure.
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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Friday 30th of August 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.
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