Shifangcun, Sichuan, China, located in the Northern Sub-Tropics, offers a variable but generally favorable environment for solar PV energy generation throughout the year. This location experiences significant seasonal fluctuations in solar energy production that potential solar installers should consider.

Seasonal Solar Production

Solar panels at this location would generate varying amounts of electricity depending on the season. Summer is clearly the most productive period, yielding 4.63kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season with 3.49kWh/day, while autumn produces 2.91kWh/day. Winter shows the lowest output at 2.36kWh/day per kilowatt installed.

The substantial difference between summer and winter production (almost double) indicates that this location experiences significant seasonal variation. This means energy planning should account for these predictable fluctuations, particularly if the solar installation will be a primary energy source.

Optimal Panel Installation

For fixed solar panel installations in Shifangcun, Sichuan, the ideal tilt angle to maximize year-round energy production is 26 degrees facing South. This specific angle has been calculated to optimize solar capture across all seasons, taking into account the Earth's elliptical orbit and the site's latitude of approximately 30.3 degrees North.

Environmental and Weather Considerations

Several environmental factors could potentially affect solar production in Shifangcun:

• The region may experience monsoon rainfall patterns typical of subtropical areas, which could reduce solar output during rainy seasons
• Air pollution and haze from nearby industrial activities in this part of China might diminish solar irradiance reaching panels
• Seasonal fog or mist is common in many subtropical river valleys in China, potentially affecting morning production

To mitigate these challenges, solar installations should incorporate several preventative measures. Regular cleaning systems are essential to remove dust and pollution deposits. Slightly increasing the panel tilt beyond the optimal angle may help with natural cleaning during rainfall. Additionally, using high-efficiency panels rated for diffuse light conditions can improve performance during hazy or foggy periods.

Overall, while not ideal year-round, Shifangcun offers good solar potential, particularly from spring through autumn. The significant summer production could potentially offset the reduced winter output, making it a viable location for solar PV with proper system design and seasonal planning.

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 Shifangcun

Seasonal solar PV output for Latitude: 30.3356, Longitude: 106.98 (Shifangcun, 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 26° South in Shifangcun, China

To maximize your solar PV system's energy output in Shifangcun, China (Lat/Long 30.3356, 106.98) throughout the year, you should tilt your panels at an angle of 26° 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 Shifangcun, 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 Shifangcun, China. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 26° 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	34° South in Autumn	45° 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 Shifangcun, 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 Shifangcun, 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 Shifangcun, China

The topography surrounding Shifangcun, China is characterized by diverse terrain features typical of the eastern Sichuan Basin region. Located at approximately 30.3356° north latitude and 106.98° east longitude, Shifangcun sits in a transitional zone between the Sichuan Basin and the western edges of mountainous terrain. The landscape consists primarily of rolling hills, moderately elevated plateaus, and river valleys that have been carved by tributaries of major regional waterways. The immediate vicinity around Shifangcun presents a mixture of gentle slopes and flatter areas interspersed with agricultural land. Elevation gradually increases as one moves eastward toward the mountainous regions, while the western direction tends toward the flatter basin topography. This varied terrain creates numerous microclimates throughout the area, with some hillsides receiving different solar exposure depending on their orientation.

Terrain Characteristics

The local terrain features moderate relief with elevations generally ranging from approximately 300 to 600 meters above sea level in the immediate vicinity. The undulating landscape has been shaped by centuries of erosion and agricultural development. River valleys cut through the terrain, creating natural corridors and flatter alluvial areas where sediment has accumulated over time. Vegetation in the region is relatively dense, particularly in areas less suitable for agriculture. The natural forest cover has been significantly reduced over centuries of human settlement, with much of the land converted to agricultural use where the terrain permits. Steeper hillsides often retain more natural vegetation, while gentler slopes and plateau areas have been extensively cultivated.

Optimal Areas for Solar PV Development

For large-scale solar photovoltaic development, the most suitable areas near Shifangcun would be the gently sloping south-facing hillsides and plateau regions. These locations offer several advantages for solar energy collection. The modest elevation provides clearer atmospheric conditions compared to the lower basin areas, which can experience more frequent fog and haze. The plateau regions to the northeast and east of Shifangcun present particularly promising opportunities for solar development. These areas combine relatively flat terrain (reducing construction costs) with good solar exposure. The more elevated positions also tend to experience less shadowing from surrounding topography, maximizing potential solar gain throughout the day. Areas to avoid would include the steep north-facing slopes, which receive significantly less direct sunlight, and the narrow river valleys where shadowing from surrounding terrain would limit productive generation periods. Additionally, the lowest elevation areas in the basin may experience more frequent cloud cover and atmospheric haze, potentially reducing solar efficiency. The agricultural nature of much of the landscape presents both challenges and opportunities for solar development. While prime agricultural land may not be ideal for conversion to solar use, there are numerous areas of marginal agricultural value on steeper slopes that could be suitable for solar arrays, particularly with mounting systems designed for uneven terrain. In terms of accessibility, the region has a moderately developed road network connecting various settlements, which would facilitate construction and maintenance of solar facilities. The proximity to populated areas also means that electrical transmission infrastructure exists in the region, though upgrades might be necessary to accommodate large-scale generation.

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.