The location of Yangjiang, Guangdong, China, situated at 21.8549° N, 111.9596° E, offers a promising environment for solar PV energy generation throughout the year. Located in the tropics, this area benefits from consistent sunlight and experiences seasons characterized more by wet and dry periods than significant temperature variations.

Seasonal Solar Performance

Solar energy production in Yangjiang demonstrates a relatively stable output across the year, with some seasonal fluctuations. Summer sees the highest energy generation at 5.63 kWh per day for each kilowatt of installed solar capacity. Spring and autumn follow closely, producing 5.09 kWh/day and 5.00 kWh/day, respectively. Winter experiences a slight dip but still maintains a respectable 4.21 kWh/day output. The most favorable periods for solar energy generation in Yangjiang are during the summer months and the transitional seasons of spring and autumn. These seasons offer abundant sunlight and generally clearer skies, maximizing the potential for solar PV systems.

Optimal Panel Installation

For fixed panel installations in Yangjiang, Guangdong, the ideal tilt angle to maximize year-round solar production is 20 degrees facing south. This angle has been calculated to optimize energy capture throughout the year, taking into account the location's latitude and seasonal sun positions.

Environmental Considerations

While Yangjiang's tropical location provides excellent conditions for solar energy production, there are some environmental factors to consider: 1. Typhoons: The region can experience tropical cyclones, which may pose a risk to solar installations. 2. High humidity: The area's tropical climate results in elevated humidity levels, potentially affecting solar panel efficiency. To mitigate these challenges, several preventative measures can be implemented:

• Use sturdy mounting systems designed to withstand high winds
• Install protective features such as wind deflectors
• Employ corrosion-resistant materials to combat humidity-related degradation
• Implement regular cleaning and maintenance schedules to address potential issues caused by high humidity and salt air (if near the coast)

By taking these precautions, solar installations in Yangjiang can maximize their energy production potential and longevity, making the most of the location's favorable solar conditions 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 319 locations across China. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in China by location

Solar output per kW of installed solar PV by season in Yangjiang

Seasonal solar PV output for Latitude: 21.8549, Longitude: 111.9596 (Yangjiang, China), 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 Yangjiang, China

To maximize your solar PV system's energy output in Yangjiang, China (Lat/Long 21.8549, 111.9596) 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 Yangjiang, China

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 Yangjiang, China. 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	14° 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 Yangjiang, China

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 Yangjiang, China.

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 Yangjiang, China

Yangjiang, located in the southwestern part of Guangdong Province, China, is characterized by a diverse topography that includes coastal plains, rolling hills, and mountainous areas. The city itself is situated on a relatively flat coastal plain, with the South China Sea to its south. As you move inland from the coast, the terrain gradually becomes more undulating and hilly. To the north and northeast of Yangjiang, the landscape transitions into the foothills of the Yunkai Mountains. These mountains, while not extremely high, create a rugged terrain with steep slopes and valleys. The area is crisscrossed by numerous rivers and streams that flow southward towards the sea, carving out small valleys and creating fertile alluvial plains along their banks.

Coastal Features

The coastline near Yangjiang is marked by sandy beaches, rocky outcrops, and small bays. Offshore, there are several islands that are part of the city's jurisdiction. These islands contribute to the area's scenic beauty and provide some protection to the mainland coast from strong winds and waves.

Inland Topography

As you move further inland, the landscape becomes increasingly hilly. The terrain is characterized by low mountains and hills interspersed with small valleys and plateaus. This varied topography creates a patchwork of different microclimates and ecosystems, ranging from subtropical forests to agricultural lands.

Potential for Solar PV Development

When considering areas suitable for large-scale solar PV installations near Yangjiang, several factors come into play. The most promising locations would likely be: 1. Coastal plains: The flat, open areas near the coast offer ample space for solar farms. These locations receive consistent sunlight and have fewer obstructions that could cast shadows on solar panels. 2. Hillsides facing south: The gently sloping hills to the north of Yangjiang, particularly those with a southern aspect, could be ideal for solar installations. These areas receive more direct sunlight throughout the day and year. 3. Abandoned or less productive agricultural land: Some of the hilly areas that are less suitable for agriculture could be repurposed for solar energy production. 4. Offshore islands: While more challenging to develop, some of the larger offshore islands could potentially host solar installations, taking advantage of the unobstructed sunlight and cooler sea breezes. It's important to note that while these areas may be topographically suitable, other factors such as grid connectivity, environmental impact, and local regulations would need to be carefully considered before embarking on any large-scale solar PV projects in the region.

China solar PV Stats as a country

China ranks 1st in the world for cumulative solar PV capacity, with 306,973 total MW's of solar PV installed. This means that 6.20% of China's total energy as a country comes from solar PV (that's 13th in the world). Each year China is generating 217 Watts from solar PV per capita (China ranks 24th in the world for solar PV Watts generated per capita). [source]

Are there incentives for businesses to install solar in China?

Yes, there are several incentives for businesses wanting to install solar energy in China. These include subsidies from the Chinese government, preferential tax policies, and access to low-interest loans. Additionally, businesses may be eligible for renewable energy certificates (RECs) which can be sold on the open market for additional income.

Do you have more up to date information than this on incentives towards solar PV projects in China? Please reach out to us and help us keep this information current. Thanks!

Citation Guide

Article Details for Citation

Tell Us About Your Work

We love seeing how our research helps others! If you've cited this article in your work, we'd be delighted to hear about it. Drop us a line via our Contact Us page or on X, to share where you've used our information - we may feature a link to your work on our site. This helps create a network of valuable resources for others in the solar energy community and helps us understand how our research is contributing to the field. Plus, we occasionally highlight exceptional works that reference our research on our social media channels.

Feeling generous?

Share this with your friends!

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.