Solar PV Analysis of Shishi, China
Shishi, Fujian, China, located at latitude 25.2715 and longitude 117.6303, offers a promising location for solar PV energy generation throughout the year. Situated in the Northern Sub Tropics, this area experiences favorable conditions for solar power production, with varying levels of efficiency across different seasons.
Seasonal Solar Performance
The solar energy output in Shishi demonstrates a clear seasonal pattern. Summer stands out as the most productive season, with an impressive 5.33 kWh per day for each kilowatt of installed solar capacity. Spring and autumn follow closely, generating 4.24 kWh/day and 4.25 kWh/day, respectively. Winter, while less productive, still maintains a respectable output of 3.85 kWh/day.
These figures indicate that Shishi enjoys relatively consistent solar potential throughout the year, with summer offering peak performance. The minimal drop in production during winter suggests that solar PV systems in this location can provide reliable energy generation year-round.
Optimal Panel Installation
To maximize year-round solar energy production in Shishi, Fujian, fixed solar panels should be installed at a tilt angle of 23 degrees facing south. This optimal angle takes into account the location's latitude and seasonal variations in sun position, ensuring the panels capture the most sunlight possible throughout the year.
Environmental Considerations
While Shishi's climate is generally favorable for solar energy production, there are some environmental factors to consider. The region experiences a subtropical monsoon climate, which can bring periods of heavy rainfall and potential typhoons, particularly during the summer months. These weather patterns may temporarily reduce solar output and pose risks to solar installations.
To mitigate these challenges, several preventative measures can be implemented:
- Use high-quality, weather-resistant solar panels and mounting systems designed to withstand strong winds and heavy rainfall.
- Install adequate drainage systems to prevent water accumulation on or around the solar panels.
- Regularly clean and maintain the panels to remove any debris or salt deposits that may accumulate due to coastal proximity.
By taking these precautions, solar PV systems in Shishi can maintain high levels of energy production and longevity, making the most of the location's favorable solar conditions throughout the year.
Note: The Northern Sub Tropics extend from 23.5° latitude North up to 35° latitude.
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 Shishi
Seasonal solar PV output for Latitude: 25.2715, Longitude: 117.6303 (Shishi, 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 23° South in Shishi, China
To maximize your solar PV system's energy output in Shishi, China (Lat/Long 25.2715, 117.6303) throughout the year, you should tilt your panels at an angle of 23° 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 Shishi, 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 Shishi, China. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 23° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 10° South in Summer | 29° South in Autumn | 40° South in Winter | 18° 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 Shishi, 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 Shishi, China.
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 Shishi, China
The topography around Shishi, China, located at latitude 25.2715 and longitude 117.6303, is characterized by a diverse landscape that transitions from coastal plains to rolling hills and mountains as you move inland. Shishi itself is situated in the southeastern part of Fujian Province, along the coast of the Taiwan Strait.
Near the coastline, the terrain is relatively flat, with low-lying areas and sandy beaches. This coastal plain extends for several kilometers inland before the landscape begins to change. As you move away from the coast, the terrain becomes more undulating, with gentle hills and small valleys interspersed throughout the region.
Further inland, the topography becomes increasingly rugged, with steeper hills and small mountains. These elevated areas are part of the larger mountain ranges that dominate much of Fujian Province. The hills and mountains are often covered in lush vegetation, including forests and agricultural terraces, which is typical of the subtropical climate in this region.
Regarding areas nearby that would be most suited to large-scale solar PV (photovoltaic) installations, there are a few considerations to keep in mind:
The coastal plains and gently rolling hills closest to Shishi would likely be the most suitable areas for large-scale solar PV projects. These areas offer relatively flat terrain, which is ideal for the installation of solar panels. The lack of significant obstacles or shading from mountains would allow for maximum sun exposure throughout the day.
However, it's important to note that the coastal region may face challenges due to potential land-use conflicts, as these areas are often valuable for agriculture, urban development, or other economic activities. Additionally, the proximity to the sea might expose solar installations to corrosive salt air, which could impact the longevity of the equipment.
Moving slightly inland, the undulating hills could also provide good locations for solar farms, especially on south-facing slopes that receive ample sunlight. These areas might offer a balance between suitable terrain and less competition for land use compared to the immediate coastal areas.
It's worth noting that while the mountainous regions further inland might have some suitable sites on south-facing slopes, the overall rugged terrain and potential shading from neighboring peaks make these areas generally less ideal for large-scale solar PV installations.
Ultimately, the selection of sites for solar PV projects would require detailed local surveys, taking into account factors such as sun exposure, land availability, grid connectivity, and environmental considerations specific to each potential location in the vicinity of Shishi.
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!
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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Thursday 26th of September 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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