Solar PV Analysis of Yuen Long San Hui, Hong Kong
Yuen Long San Hui, Yuen Long District, Hong Kong, situated in the tropics, offers a promising location for solar PV energy generation throughout the year. With its consistent sunlight and seasonal patterns characterized more by wet and dry periods than traditional four seasons, this area presents favorable conditions for solar power production.
Seasonal Solar Performance
The solar energy output at this location demonstrates relatively stable performance across all seasons:
- Summer: 5.49 kWh/day
- Spring: 5.40 kWh/day
- Autumn: 4.95 kWh/day
- Winter: 4.40 kWh/day
Optimal Panel Positioning
For fixed panel installations in Yuen Long San Hui, Yuen Long District, the ideal tilt angle to maximize year-round solar production is 21 degrees facing South. This angle has been calculated considering the location's latitude, daily solar elevation angles, and weighted by NASA's solar irradiance data to ensure optimal energy capture throughout the year.
Peak Generation Periods
The most favorable times for solar energy generation at this location are during the summer months, particularly from May to August. These months typically experience longer daylight hours and clearer skies, resulting in higher solar irradiance levels. However, the relatively small variation in output across seasons suggests that solar PV systems can operate efficiently throughout the year.
Environmental and Weather Considerations
While Yuen Long San Hui generally offers good conditions for solar energy production, there are some factors that could potentially impact performance: 1. Typhoons: Hong Kong is prone to typhoons, which can cause damage to solar panels if not properly secured. To mitigate this risk, installations should use robust mounting systems designed to withstand high winds. 2. Air pollution: The Pearl River Delta region, including Hong Kong, sometimes experiences high levels of air pollution, which can reduce solar irradiance. Regular cleaning of panels can help maintain efficiency. 3. Monsoon season: The summer monsoon brings increased cloud cover and rainfall, potentially reducing solar output. Implementing water-resistant panel designs and ensuring proper drainage can help address this issue.
By taking these factors into account and implementing appropriate preventative measures, solar PV systems in Yuen Long San Hui can be optimized for consistent and efficient energy production throughout the year.
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 Yuen Long San Hui
Seasonal solar PV output for Latitude: 22.4362, Longitude: 114.0345 (Yuen Long San Hui, 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 21° South in Yuen Long San Hui, Hong Kong
To maximize your solar PV system's energy output in Yuen Long San Hui, Hong Kong (Lat/Long 22.4362, 114.0345) throughout the year, you should tilt your panels at an angle of 21° 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 Yuen Long San Hui, 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 Yuen Long San Hui, Hong Kong. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 21° 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 | 38° 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 Yuen Long San Hui, 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 Yuen Long San Hui, 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 Yuen Long San Hui, Hong Kong
The area around Yuen Long San Hui in Hong Kong features a diverse topography that combines both flat lowlands and hilly terrain. This region is situated in the northwestern part of the New Territories, close to the border with mainland China.
The immediate vicinity of Yuen Long San Hui is predominantly flat, consisting of what was once agricultural land that has been largely urbanized. This area is part of the Yuen Long Plain, a wide alluvial floodplain that extends towards the coast. The flat terrain here is interspersed with numerous small streams and drainage channels.
As you move away from the town center, the landscape begins to rise gradually. To the north and east, the terrain becomes increasingly hilly, with several prominent peaks in the distance. These hills are part of the larger mountain ranges that characterize much of Hong Kong's geography.
To the south and west, the land remains relatively flat for some distance before eventually meeting the coastline of Deep Bay. This coastal area includes wetlands and fish ponds, which are important habitats for migratory birds.
Areas Suitable for Large-Scale Solar PV
When considering locations for large-scale solar photovoltaic (PV) installations near Yuen Long San Hui, several factors need to be taken into account, including available space, sunlight exposure, and minimal shadowing from surrounding terrain or structures.
The flat areas of the Yuen Long Plain would be the most suitable for large-scale solar PV projects. These areas offer expansive, unobstructed spaces that receive consistent sunlight throughout the day. Specifically, the following locations could be considered:
- Former agricultural lands that have not been developed for urban use
- Industrial areas with large, flat rooftops
- Reclaimed land near the coast, provided it's not ecologically sensitive
It's important to note that while the hilly areas surrounding Yuen Long San Hui might seem appealing due to their elevation, they are generally less suitable for large-scale solar installations. The uneven terrain can create challenges for construction and maintenance, and the hills may cast shadows that reduce the efficiency of solar panels.
Any large-scale solar PV project in this area would need to carefully balance energy production goals with Hong Kong's pressing need for land for housing and other urban development. Environmental impact assessments would also be crucial, particularly for projects near the ecologically important coastal wetlands.
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Saturday 27th of July 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.
