Jingjiang, Jiangsu, China, located in the Northern Sub Tropics at latitude 32.0112 and longitude 120.2612, offers a relatively good location for solar PV energy generation throughout the year, though with some seasonal variation.

Seasonal Solar Production

Solar energy production in Jingjiang follows predictable seasonal patterns. Summer months deliver the highest energy output at 5.17kWh per day for each kilowatt of installed solar capacity. Spring follows as the second most productive season with 4.68kWh/day, while autumn yields 3.90kWh/day. Winter experiences the lowest production at 3.12kWh/day per kilowatt installed.

This seasonal pattern means Jingjiang experiences moderate variation throughout the year, with summer producing approximately 66% more energy than winter months. Despite the winter reduction, the location still maintains reasonable year-round production compared to many other regions.

Optimal Panel Installation

For fixed solar panel installations in Jingjiang, Jiangsu, the ideal angle to maximize total year-round production is 29 degrees tilted toward the South. This specific angle optimizes annual energy harvest by balancing seasonal solar positions.

Environmental and Weather Considerations

Several environmental factors could potentially impact solar production in Jingjiang:

• Air pollution and haze from nearby industrial areas can significantly reduce solar irradiance reaching panels, particularly during winter months when air quality often deteriorates
• Seasonal monsoon rains and high humidity in summer months may cause temporary reductions in efficiency
• Occasional typhoons and strong winds in this coastal-adjacent region present physical risks to installations

To mitigate these challenges, solar installations in Jingjiang should incorporate self-cleaning panel technologies or regular maintenance schedules to address pollution buildup. Sturdy mounting systems designed to withstand typhoon-force winds are essential, as are quality waterproofing measures for all electrical components. Additionally, slightly increasing the panel tilt beyond the optimal 29 degrees can help with natural cleaning from rainfall, though this comes with a small efficiency trade-off.

Overall, Jingjiang offers a good location for solar PV with reasonable year-round production, especially if installations are designed with local environmental factors in mind.

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 Jingjiang

Seasonal solar PV output for Latitude: 32.0112, Longitude: 120.2612 (Jingjiang, 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 29° South in Jingjiang, China

To maximize your solar PV system's energy output in Jingjiang, China (Lat/Long 32.0112, 120.2612) throughout the year, you should tilt your panels at an angle of 29° 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 Jingjiang, 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 Jingjiang, China. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 29° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
16° South in Summer	37° South in Autumn	47° South in Winter	25° 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 Jingjiang, 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 Jingjiang, 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 Jingjiang, China

The topography around Jingjiang, China is predominantly flat, characterized by low-lying alluvial plains formed by the Yangtze River Delta. This eastern China coastal region sits at a very low elevation, typically less than 10 meters above sea level across most areas. Jingjiang itself is situated on the northern bank of the Yangtze River, which is one of China's major waterways and has significantly shaped the surrounding landscape over millennia. The terrain consists mainly of fertile floodplains with numerous water bodies including streams, canals, and lakes interspersed throughout the region. These waterways form a complex network that has historically been managed for flood control, transportation, and agriculture. The flatness of the terrain is occasionally interrupted by subtle undulations and small hills, but there are no significant mountains or highlands in the immediate vicinity.

Agricultural Land and Urban Development

Much of the land around Jingjiang has been intensively cultivated for agriculture, with rice paddies, wheat fields, and other crops dominating the landscape. The region also features scattered settlements, villages, and expanding urban areas. This agricultural and urban development has modified the natural landscape significantly over centuries of human habitation.

Solar PV Potential Areas

For large-scale solar photovoltaic (PV) installations, several areas near Jingjiang present favorable conditions: The flat agricultural lands to the north and northwest of Jingjiang offer substantial open spaces that could potentially be repurposed or dual-purposed for solar installations. These areas benefit from the consistently flat terrain, which simplifies construction and reduces site preparation costs. Some marginally productive agricultural lands or former industrial sites in the broader Jiangsu province could be suitable for solar development without significantly impacting food production. These locations typically have existing road access and may be located near power transmission infrastructure. The drier upland areas, though limited, would avoid the flood risks associated with the lowest-lying portions of the delta. Even slight elevations in this region can offer advantages for solar installation by reducing flood exposure.

Topographical Challenges

Despite these opportunities, the topography around Jingjiang presents certain challenges for solar PV development. The prevalence of water bodies and wetlands limits available land area and may increase humidity, which can affect solar panel efficiency. Additionally, the low-lying nature of the region makes it vulnerable to flooding, particularly during the summer monsoon season when rainfall is heaviest. The dense population and intensive land use in this part of China also create competition for available space. Any large-scale solar development would need to carefully consider existing land use patterns and potentially integrate with agricultural activities through approaches such as agrivoltaics. The flat terrain, while beneficial for construction, may occasionally experience fog or mist from the numerous water bodies, temporarily reducing solar radiation reaching the panels. However, this effect is generally offset by the abundant sunshine the region receives during clear days.

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.

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.