Cheung Sha Lan, Hong Kong, situated at 22.2347° N, 114.0041° E, offers a promising location for solar energy generation throughout the year. This tropical setting benefits from consistent sunlight, with seasons primarily characterized by wet and dry periods rather than significant temperature fluctuations.

Seasonal Solar Performance

Solar panel efficiency in Cheung Sha Lan varies across seasons, with summer being the most productive period. During summer months, each kilowatt of installed solar capacity can generate an impressive 5.52 kWh per day. Spring follows closely, yielding 5.40 kWh/day, while autumn produces 4.91 kWh/day. Winter, though less productive, still manages a respectable 4.35 kWh/day.

The relatively small variation between seasons indicates that Cheung Sha Lan is well-suited for year-round solar energy production. However, the most ideal times for generation are from late spring through early autumn when daylight hours are longer and solar intensity is at its peak.

Optimal Panel Installation

For fixed solar panel installations in this location, the ideal tilt angle to maximize year-round energy production is 20 degrees facing south. This angle optimizes the panels' exposure to sunlight throughout the year, accounting for the location's latitude and the Earth's orbit.

Environmental Considerations

While Cheung Sha Lan's tropical climate is generally favorable for solar energy, there are some environmental factors to consider:

1. Typhoons: Hong Kong is prone to tropical cyclones, which can potentially damage solar installations.
2. High humidity: The area's humid climate may lead to increased dust accumulation on panels, potentially reducing efficiency.

To mitigate these issues, solar installations should incorporate sturdy mounting systems designed to withstand high winds. Regular cleaning and maintenance schedules should also be implemented to combat the effects of humidity and dust accumulation. Additionally, using high-quality, weather-resistant panels can help ensure optimal performance in this tropical environment.

Overall, Cheung Sha Lan presents a highly suitable location for solar energy generation, with consistent year-round production potential and manageable environmental challenges.

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 Cheung Sha Lan

Seasonal solar PV output for Latitude: 22.2347, Longitude: 114.0041 (Cheung Sha Lan, 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 Cheung Sha Lan, Hong Kong

To maximize your solar PV system's energy output in Cheung Sha Lan, Hong Kong (Lat/Long 22.2347, 114.0041) 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 Cheung Sha Lan, 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 Cheung Sha Lan, 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 Cheung Sha Lan, 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 Cheung Sha Lan, Hong Kong.

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 Cheung Sha Lan, Hong Kong

Cheung Sha Lan, located in Hong Kong, is situated in an area characterized by a diverse and picturesque topography. The region features a mix of coastal lowlands, rolling hills, and steep mountainous terrain. The coastline near Cheung Sha Lan is marked by sandy beaches and rocky outcrops, with the South China Sea stretching out to the horizon. Inland from the coast, the landscape gradually rises, transitioning into gently sloping hills covered in lush subtropical vegetation. These hills become progressively steeper as they extend further inland, eventually giving way to more rugged mountainous areas. The mountains in this region, while not extremely high, are notable for their steep slopes and densely forested surfaces. The area surrounding Cheung Sha Lan is part of Lantau Island, the largest island in Hong Kong. Lantau is known for its dramatic topography, with Lantau Peak, the second-highest point in Hong Kong, dominating the landscape. The island's terrain is characterized by a series of ridges and valleys, creating a complex and varied topographical profile.

Potential Areas for Large-Scale Solar PV

When considering areas nearby that would be most suited to large-scale solar photovoltaic (PV) installations, several factors come into play. The ideal locations would offer ample sunlight exposure, relatively flat terrain, and minimal environmental impact. The coastal lowlands near Cheung Sha Lan present some potential for solar PV development. These areas tend to be flatter and more accessible, which could facilitate the construction and maintenance of solar arrays. However, proximity to the coast may raise concerns about salt spray affecting the equipment and potential conflicts with recreational beach use. Further inland, some of the gentler hillsides could be suitable for solar PV installations. These areas may offer good sun exposure while being less prone to coastal weather effects. However, care would need to be taken to avoid disrupting the local ecosystem and to manage potential visual impacts on the landscape. It's important to note that large-scale solar PV development in this region would face significant challenges due to the limited availability of large, flat areas and the high value placed on preserving Hong Kong's natural landscapes. Any such projects would require careful planning and environmental impact assessments to ensure they align with local conservation efforts and land-use policies.

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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.