Anqing, Anhui, China presents a moderately favorable location for year-round solar PV energy generation, with seasonal variations that reflect its Northern Sub Tropical climate at latitude 30.5182, longitude 117.0534.

Seasonal Solar Performance

The location shows strong summer performance at 4.85 kWh per day per kW of installed solar capacity, making it the peak generation period. Spring follows closely with 3.97 kWh per day per kW, while autumn produces 4.05 kWh per day per kW. Winter represents the lowest production period at 3.04 kWh per day per kW, which is typical for locations in the Northern Hemisphere. For optimal year-round energy production, solar panels should be installed at a fixed tilt angle of 28 degrees facing south. This angle maximizes total annual solar output by accounting for the sun's varying elevation throughout the year and weighting the optimal daily angles by solar irradiance potential.

Ideal Generation Periods

Summer emerges as the most productive season for solar generation at this location, followed by a relatively strong performance in both spring and autumn. The shoulder seasons of spring and autumn offer nearly comparable output, making them valuable contributors to annual energy production. Winter shows the expected seasonal decline but still maintains reasonable generation levels.

Environmental and Weather Challenges

Several local factors in Anqing can significantly impact solar PV performance and require careful consideration during installation:

• High humidity and monsoon conditions: The subtropical climate brings substantial moisture that can reduce solar panel efficiency and create condensation issues
• Air pollution: As an industrial city in eastern China, Anqing experiences air quality challenges that can coat panels with particulates, reducing light transmission
• Seasonal weather patterns: The region experiences distinct wet and dry seasons that affect both solar irradiance and maintenance requirements

Preventative Installation Measures

To maximize solar energy production despite these challenges, several installation strategies prove effective. Proper panel ventilation becomes crucial in high-humidity environments, requiring adequate spacing between panels and mounting surfaces to promote air circulation and prevent moisture buildup. Regular cleaning schedules are essential due to air pollution and dust accumulation. Installing panels at the recommended 28-degree tilt helps with natural rain washing, but manual cleaning may be necessary during dry periods or heavy pollution episodes. Selecting panels with anti-reflective coatings and corrosion-resistant mounting hardware specifically designed for humid, subtropical conditions extends system life and maintains efficiency. Additionally, installing monitoring systems helps identify performance drops quickly, allowing for prompt maintenance interventions. Drainage considerations around the installation site prevent water pooling that could create humidity problems or foundation issues for ground-mounted systems. For rooftop installations, ensuring proper roof ventilation helps manage the heat and humidity that can reduce panel efficiency.

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 Anqing

Seasonal solar PV output for Latitude: 30.5182, Longitude: 117.0534 (Anqing, 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 28° South in Anqing, China

To maximize your solar PV system's energy output in Anqing, China (Lat/Long 30.5182, 117.0534) throughout the year, you should tilt your panels at an angle of 28° 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 Anqing, 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 Anqing, China. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 28° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
15° South in Summer	36° South in Autumn	46° South in Winter	23° 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 Anqing, 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 Anqing, 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 Anqing, China

Topographical Features Around Anqing

Anqing sits in a transitional zone where the foothills of the Dabie Mountains meet the expansive Yangtze River floodplains in Anhui Province. The city itself occupies relatively flat terrain at approximately 20 meters above sea level, positioned strategically along the northern bank of the Yangtze River. This location places it within one of China's most important river valleys, where centuries of sediment deposition have created fertile, low-lying agricultural land. To the northwest of Anqing, the landscape gradually rises toward the Dabie Mountain range, which forms part of the watershed between the Yangtze and Huai river systems. These mountains reach elevations of several hundred meters and create a natural barrier that influences local weather patterns. The terrain in this direction becomes increasingly rugged, with steep slopes, deep valleys, and dense forest coverage that would present significant challenges for large-scale development projects. The eastern and southeastern areas around Anqing are characterized by the classic Yangtze River delta topography - vast stretches of flat to gently rolling plains interspersed with numerous lakes, wetlands, and tributary rivers. This region includes parts of the broader Jianghuai Plain, where elevation changes are minimal and the landscape is dominated by agricultural fields, small villages, and waterways.

Optimal Areas for Large-Scale Solar Development

The most promising locations for extensive solar photovoltaic installations lie in the flat agricultural plains extending northeast and east of Anqing city. These areas offer several key advantages including minimal elevation changes that would require extensive grading, relatively sparse population density compared to urban centers, and existing transportation infrastructure that could support construction and maintenance activities. The gently rolling hills located 15-30 kilometers northeast of the city center present another excellent opportunity for solar development. This terrain provides natural drainage while maintaining slopes gentle enough to accommodate large arrays without excessive earthwork. The slightly elevated position of these areas also helps avoid the seasonal flooding issues that can affect the lowest-lying river plains. Areas immediately adjacent to existing transmission corridors and major transportation routes would be particularly attractive for solar development, as they offer reduced infrastructure development costs. The region's agricultural plains, while highly productive, include marginal farmland areas that could potentially be suitable for solar installations, especially where dual-use agricultural and solar systems might be implemented. The mountainous terrain to the northwest should generally be avoided for large-scale solar projects due to steep slopes, heavily forested areas, and the significant environmental and logistical challenges associated with mountain construction. Similarly, the immediate floodplain areas closest to the Yangtze River and its major tributaries present flooding risks and may have regulatory restrictions that complicate large-scale development.

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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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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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.