Solar PV Analysis of Kai Yi Wan, Hong Kong
The location at Kai Yi Wan, Hong Kong is quite good for generating solar energy throughout the year. This is because it's in the Tropics where sunlight remains fairly constant most of the year and seasons are more about wet or dry periods rather than significant changes in temperature.
Based on the amount of energy that can be generated per kilowatt of installed solar power, you can expect to get 5.49 kilowatt-hours (kWh) per day in summer, 4.95 kWh/day in autumn, 4.40 kWh/day in winter, and 5.40 kWh/day in spring.
However, there are certain times of the year when you could generate more solar power at this location. For instance, summer and spring seem to have slightly higher generation rates compared to autumn and winter due to longer daylight hours.
If you're planning a fixed panel installation at this location, tilting your panels at an angle of 20 degrees towards south would be ideal for maximizing your total yearly production from solar photovoltaic (PV).
There may be some local factors that could hinder solar production at this location though these need further investigation before drawing conclusions - these factors include environmental issues like air pollution which may block sunlight; topographical features such as mountains or tall buildings that might cast shadows; adverse weather conditions like heavy rainfall during wet season which could limit exposure to sunlight; or other local constraints such as regulations on building heights or restrictions on installation sites.
To mitigate these potential challenges when installing solar panels:
1) Choose a site with minimal obstructions blocking direct sunlight.
2) Install high-quality panels with good performance even under less ideal conditions.
3) Regular maintenance should be done to ensure panels are clean and working efficiently.
4) If possible consider adjustable panel installations that can change tilt angle according to season.
5) Lastly always adhere strictly to local regulatory guidelines regarding installations for safety and efficiency purposes.
In conclusion Kai Yi Wan, Hong Kong is a generally favourable location for solar energy production throughout the year with some potential challenges that can be managed through careful 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 Kai Yi Wan
Seasonal solar PV output for Latitude: 22.1469, Longitude: 114.5906 (Kai Yi Wan, 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 Kai Yi Wan, Hong Kong
To maximize your solar PV system's energy output in Kai Yi Wan, Hong Kong (Lat/Long 22.1469, 114.5906) 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 Kai Yi Wan, 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 Kai Yi Wan, 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 | 27° 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 Kai Yi Wan, 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 Kai Yi Wan, 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 Kai Yi Wan, Hong Kong
The area around Kai Yi Wan, Hong Kong is primarily urban and highly developed, with a mix of residential, commercial, and industrial buildings. It's located in the eastern part of Kowloon Peninsula. The terrain is generally hilly to mountainous with steep slopes.
Regarding solar PV installations, it's important to note that Hong Kong's dense urban environment and hilly topography can present challenges for large-scale ground-mounted solar installations. However, there are still opportunities for rooftop solar installations on buildings throughout the city.
Areas most suited for large-scale solar PV would be those with larger open spaces or flat rooftops. This could include industrial areas where there are warehouses or factories with large flat roofs that could accommodate substantial arrays of solar panels.
In addition to this, any undeveloped land in the New Territories region could potentially be suitable for ground-mounted systems if zoning laws permit such use. However, given Hong Kong’s limited land resources and high property values these sites may not necessarily be easily available.
Finally, floating photovoltaic systems on reservoirs or bodies of water (like High Island Reservoir) could also provide an opportunity for large-scale solar power generation in Hong Kong as has been explored by the government before.
It should also be noted that any implementation needs to consider factors like shading from surrounding buildings or mountains and orientation towards sunlight (south-facing is generally better).
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Friday 26th of January 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.
