Solar Energy Potential in Anshun, Guizhou, China

Anshun, Guizhou, located in China's northern subtropical zone at coordinates 26.2554, 105.9335, offers varying potential for solar photovoltaic (PV) energy generation throughout the year. This location experiences significant seasonal fluctuations in solar energy production that prospective solar installers should consider. The energy output from solar PV systems in Anshun follows a predictable seasonal pattern. Summer stands out as the most productive season, generating approximately 5.22 kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season with 4.24 kWh/day, while autumn yields a moderate 3.52 kWh/day. Winter production drops considerably to just 2.17 kWh/day per installed kilowatt.

Optimal Installation Configuration

For fixed solar panel installations in Anshun, Guizhou, the ideal tilt angle to maximize year-round energy production is 22 degrees facing South. This specific angle has been calculated to optimize annual solar collection based on Anshun's geographical position and seasonal solar patterns.

Environmental Challenges

Several environmental factors may impact solar energy production in Anshun:

• High humidity levels during summer monsoon season can reduce panel efficiency through increased cloud cover and potential condensation on panels.
• Air pollution from nearby industrial activities may create a haze layer that diminishes solar irradiance reaching panels.
• Seasonal typhoons and heavy rainfall events could cause physical damage to installations if not properly secured.

Preventative Measures

To mitigate these challenges, solar installations in Anshun should incorporate several protective measures:

• Use anti-reflective coatings and self-cleaning glass technologies to counter humidity and pollution effects
• Install robust mounting systems designed to withstand typhoon-force winds
• Implement elevated installation designs to prevent flooding damage during heavy rainfall
• Consider micro-inverter or power optimizer technology to minimize production losses when some panels are partially shaded

With proper planning and appropriate equipment selection, Anshun's solar potential can be effectively harnessed despite these environmental challenges. The substantial production during spring and summer months helps offset the reduced winter output, making year-round solar generation 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 Anshun

Seasonal solar PV output for Latitude: 26.2554, Longitude: 105.9335 (Anshun, 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 22° South in Anshun, China

To maximize your solar PV system's energy output in Anshun, China (Lat/Long 26.2554, 105.9335) throughout the year, you should tilt your panels at an angle of 22° 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 Anshun, 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 Anshun, China. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 22° 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	30° South in Autumn	41° South in Winter	19° 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 Anshun, 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 Anshun, 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 Anshun, China

The region surrounding Anshun in Guizhou Province, China, features a complex karst topography characterized by dramatic limestone formations, steep hills, and numerous valleys. This mountainous landscape is part of the Yunnan-Guizhou Plateau, with elevations generally ranging from 1,000 to 1,500 meters above sea level. The terrain is notably uneven, with significant variations in elevation across relatively short distances.

Karst Features

The karst landscape around Anshun includes numerous sinkholes, underground streams, and cave systems. The famous Huangguoshu Waterfall, one of China's largest waterfalls, is situated near Anshun and exemplifies the region's distinctive topography. These karst formations create picturesque scenery but also present challenges for large-scale development projects due to the irregular terrain.

River Systems

Several river systems cut through the region, including tributaries of the Yangtze River. These waterways have carved deep valleys between the limestone mountains over millions of years. The Nanpan River flows through parts of the broader region, creating fertile valleys amidst the otherwise rugged terrain.

Vegetation and Land Cover

The natural vegetation consists primarily of subtropical evergreen forests, though much of the original forest cover has been modified by human activity. Agricultural terraces are common on gentler slopes, while steeper areas remain forested or have been converted to commercial forestry.

Potential Areas for Solar Development

For large-scale solar photovoltaic installations, the most suitable areas near Anshun would be: The relatively flat plateaus to the north and northeast of Anshun city offer more consistent terrain that would require less grading and preparation for solar panel installation. These areas, while still at elevation, feature more gradual slopes and broader expanses of land. Some of the wider valley floors, particularly in the eastern direction toward Guiyang, provide flat terrain that could accommodate larger solar installations. These areas benefit from being somewhat sheltered from extreme weather while still receiving adequate solar radiation. The gently rolling hills to the southwest of Anshun, where the karst features are less pronounced, could also support solar development. These locations would require some terrain modification but less extensively than in the more dramatic karst regions.

Topographical Challenges

Any solar development in the region must contend with several topographical challenges. The irregular terrain means that many areas would require significant grading, potentially increasing construction costs. The karst geology also presents concerns regarding ground stability and drainage. Additionally, the mountainous nature of the region creates potential shading issues, as hills and ridges may cast shadows over adjacent areas during parts of the day, reducing the efficiency of solar collection. Careful site selection with detailed topographical analysis would be essential for any large-scale solar project in this region. The complex terrain also affects accessibility, with transportation infrastructure being more limited in the more rugged areas. Sites with existing road access would be preferable for solar development to minimize additional construction requirements.

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.