Jingzhou, Hubei, China, located in the Northern Sub Tropics at coordinates 30.35, 112.1862, offers a moderately favorable location for solar PV energy generation throughout the year, with seasonal variations in output.

Seasonal Solar Performance

Solar panels in Jingzhou perform best during summer months, generating an average of 5.12 kWh per day for each kilowatt of installed capacity. This output decreases to 3.95 kWh/day in autumn, reaches its lowest point in winter at 2.85 kWh/day, and recovers to 3.64 kWh/day during spring months.

The significant difference between summer and winter production (nearly 45% reduction) indicates that while Jingzhou can provide reliable solar energy year-round, system sizing should account for these seasonal fluctuations to ensure adequate power supply during winter months.

Optimal Panel Installation

For fixed solar panel installations in Jingzhou, Hubei, the ideal tilt angle to maximize year-round energy production is 27 degrees facing South. This specific angle has been calculated by analyzing daily solar elevation patterns at this latitude, weighted by the location's solar irradiance potential throughout the year.

Environmental and Weather Considerations

Several environmental factors in Jingzhou may impact solar production:

• High humidity and frequent rainfall in the subtropical climate can reduce panel efficiency through increased cloud cover and moisture accumulation
• Summer monsoon season may bring extended periods of overcast conditions, temporarily reducing output during what should be peak production months
• Air pollution from nearby industrial areas could deposit particulate matter on panels, gradually decreasing efficiency
• Seasonal flooding in this Yangtze River region poses risks to ground-mounted systems

To mitigate these challenges, solar installations in Jingzhou should incorporate regular cleaning schedules to remove dust and pollution deposits, elevated mounting systems in flood-prone areas, and potentially slight adjustments to the tilt angle to promote natural cleaning during rainfall. Additionally, high-quality waterproof components and proper drainage systems are essential given the region's humidity and precipitation patterns.

Overall, while not ideal year-round due to significant seasonal variations, Jingzhou still offers viable conditions for solar PV installations with proper system design and maintenance considerations.

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 Jingzhou

Seasonal solar PV output for Latitude: 30.35, Longitude: 112.1862 (Jingzhou, 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 27° South in Jingzhou, China

To maximize your solar PV system's energy output in Jingzhou, China (Lat/Long 30.35, 112.1862) throughout the year, you should tilt your panels at an angle of 27° 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 Jingzhou, 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 Jingzhou, China. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 27° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
14° South in Summer	35° 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 Jingzhou, 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 Jingzhou, 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 Jingzhou, China

Jingzhou, positioned in central China's Hubei Province, sits within the middle reaches of the Yangtze River basin. This region features predominantly flat terrain with gentle undulations, characteristic of alluvial plains formed by the Yangtze River over millennia. The landscape around Jingzhou is dominated by lowlands with elevations typically ranging between 20-50 meters above sea level, creating a vast, open expanse. The topography is defined by the extensive Jianghan Plain, one of China's major agricultural regions. This flat terrain extends for hundreds of kilometers, interrupted occasionally by low hills and subtle ridges. The Yangtze River flows through this area, creating a network of tributaries, lakes, and wetlands that contribute to the region's distinctive geography.

Surrounding Terrain Features

To the north of Jingzhou, the terrain gradually transitions into the central China plains, maintaining its predominantly flat character. Southern areas begin to show more varied elevation, with scattered hills becoming more prominent as one moves toward the boundary with Hunan Province. The western periphery eventually rises toward the Three Gorges region, while eastern areas continue the flat pattern toward the vast lake district containing Dongting Lake. This overall flat topography has historically made the region susceptible to flooding, leading to the construction of extensive dike and water management systems.

Solar PV Potential Areas

The flat, open terrain surrounding Jingzhou presents several advantageous areas for large-scale solar photovoltaic development. The most suitable locations include: The elevated portions of the Jianghan Plain offer ideal conditions for solar installations. These slightly higher areas, particularly those 5-10 kilometers north and northwest of central Jingzhou, provide good drainage and minimal flooding risk while maintaining the flat terrain necessary for efficient panel arrangement. Agricultural borderlands where the soil quality is marginal represent another opportunity. These transition zones between fertile farmland and less productive areas, especially in the southwestern periphery, could support dual-use solar installations while preserving prime agricultural land. Former industrial sites and reclaimed land parcels scattered throughout the region offer potential for brownfield solar development. These locations, already disturbed by human activity, could be repurposed for renewable energy generation without impacting natural or agricultural resources. The gently sloping areas to the south, where the plain begins to rise into low hills, provide slightly elevated positions with good solar exposure and minimal shading concerns. These transitional zones between the flat plain and hillier terrain combine accessibility with favorable positioning.

Topographical Considerations

Despite the generally favorable terrain, some topographical factors require consideration for solar development. The region's water-rich environment means that flood risk assessment is essential, with preference given to locations with slight elevation advantages. Soil stability varies throughout the plain, with some areas requiring more substantial foundational work for solar infrastructure. The flat terrain does minimize earthworks and site preparation costs compared to mountainous regions, allowing for more efficient construction and maintenance of large facilities. Additionally, the open landscape reduces concerns about terrain-based shading that might otherwise decrease solar energy capture efficiency. The regional waterways, while potentially limiting some development areas, also provide opportunities for cooling systems if needed for certain types of solar installations, as well as transportation infrastructure for construction materials and maintenance access.

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.