Solar Energy Potential in Luzhou, China

Luzhou, China, located in the Northern Sub Tropics at latitude/longitude 28.8864, 105.4268, offers varying potential for solar energy generation throughout the year. This location experiences significant seasonal differences in solar productivity that potential solar installers should be aware of. The solar energy output in Luzhou follows a predictable seasonal pattern. Summer is the most productive season, generating an average of 4.86 kWh per day for each kilowatt of installed solar capacity. Spring follows as the second most productive season with 3.67 kWh/day, while autumn produces 2.98 kWh/day. Winter shows the lowest output at just 2.16 kWh/day per kilowatt installed.

Optimal Installation Setup

For maximizing year-round solar production in Luzhou, fixed solar panels should be installed at a tilt angle of 24 degrees facing South. This specific angle has been calculated to optimize annual energy harvest based on Luzhou's geographical position and seasonal solar patterns.

Environmental and Weather Challenges

Several significant factors can impede solar production in Luzhou:

• High humidity and fog, common in this subtropical region, can reduce solar panel efficiency by blocking direct sunlight.
• Seasonal monsoon rains, particularly during summer months, may limit solar production despite it being otherwise the most productive season.
• Air pollution from industrial activities in the broader Sichuan region can create a haze that diminishes solar irradiance reaching panels.
• Dust accumulation, especially during drier periods, can gradually reduce panel efficiency.

Preventative Measures

To maximize solar energy production despite these challenges, consider these preventative measures:

• Install self-cleaning panels or implement regular cleaning schedules to combat dust and pollution buildup.
• Use anti-reflective glass and high-efficiency panels specifically designed for high-humidity environments.
• Consider a slight adjustment to the standard tilt angle during installation to improve water runoff during rainy seasons.
• Implement microinverters or power optimizers to minimize production losses when parts of the array are affected by shading or soiling.
• Ensure adequate spacing between panel rows to minimize mutual shading, particularly important during winter months when the sun angle is lower.

With proper installation and maintenance, solar PV systems in Luzhou can still provide significant energy despite seasonal variations in output. The substantial summer and spring production can help offset the reduced winter generation, making year-round solar energy harvesting viable at this location.

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 Luzhou

Seasonal solar PV output for Latitude: 28.8864, Longitude: 105.4268 (Luzhou, 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 24° South in Luzhou, China

To maximize your solar PV system's energy output in Luzhou, China (Lat/Long 28.8864, 105.4268) throughout the year, you should tilt your panels at an angle of 24° 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 Luzhou, 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 Luzhou, China. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 24° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
13° South in Summer	32° South in Autumn	43° South in Winter	22° 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 Luzhou, 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 Luzhou, 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 Luzhou, China

Luzhou is situated in the southeastern part of Sichuan Province, nestled within the Sichuan Basin at the confluence of the Yangtze and Tuo Rivers. The topography around Luzhou is characterized by a mixture of hilly terrain, river valleys, and low mountains, creating a diverse landscape that transitions gradually from the basin floor to more elevated regions. The city itself sits in a relatively flat river valley, with an average elevation of approximately 300 meters above sea level. Moving outward from the urban center, the terrain becomes increasingly undulating, with numerous hills and small mountains dotting the landscape. These hills typically range from 400 to 800 meters in height, creating a rolling topography that defines much of the surrounding countryside.

Surrounding Terrain Features

To the east and southeast of Luzhou, the land gradually descends toward the Yangtze River valley, forming a series of terraced landscapes that have been extensively cultivated for agriculture, particularly for growing grains and the sorghum used in the region's famous liquor production. The river valleys feature alluvial plains that provide fertile ground for farming. The western and northwestern areas present more pronounced elevation changes, with hillier terrain that eventually rises toward the eastern edge of the Yunnan-Guizhou Plateau. These areas feature steeper slopes and deeper valleys, with some peaks reaching above 1,000 meters. To the north, the landscape transitions into the broader Sichuan Basin, becoming gradually flatter but still maintaining gentle undulations typical of the basin's periphery. The southern regions feature more consistent hilly terrain that extends toward neighboring Guizhou Province.

Potential Areas for Solar PV Development

For large-scale solar photovoltaic installations, several areas around Luzhou present favorable conditions based on topographical considerations: The gently sloping hillsides to the south and southwest of Luzhou offer promising locations for solar development. These areas provide adequate elevation to avoid the fog and haze that sometimes settles in the river valleys, while not being so steep as to complicate construction. The southern orientation of many of these slopes is particularly advantageous for maximizing solar exposure. The elevated plateaus and broader hilltops in the western parts of the region, particularly in Naxi and Hejiang counties, present suitable terrain for large installations. These areas typically have less agricultural value than the fertile valley floors, making them more appropriate for alternative land uses like energy generation. Some of the more level areas on the eastern outskirts of Luzhou, where the terrain begins to flatten toward the Yangtze River, could also accommodate sizeable solar arrays. However, these areas must be carefully selected to avoid prime agricultural land and flood-prone zones near the rivers. The more mountainous regions to the far west and southwest, while offering good elevation and orientation, present challenges in terms of accessibility and grid connection. These areas would likely require more substantial infrastructure development to support large-scale solar installations. It's worth noting that while topography is favorable in many areas surrounding Luzhou, other factors such as land use patterns, existing vegetation, and local climate conditions (including seasonal fog prevalence) would need careful consideration in site selection. The region's substantial annual rainfall also necessitates robust drainage systems for any large-scale solar installation.

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.