Solar Energy Potential in Longshan, Jilin, China

Longshan, Jilin, China, located in the Northern Temperate Zone at coordinates 42.8885, 125.1383, offers moderate potential for solar photovoltaic (PV) energy generation with significant seasonal variations. The location experiences distinct differences in solar energy production throughout the year, with summer and spring being the most productive seasons. Solar energy production at Longshan varies considerably across the four seasons. During summer, solar panels generate their highest output at 5.58 kWh per day for each kilowatt of installed capacity. Spring follows closely with 5.20 kWh/day per kW. Production drops significantly in autumn to 3.30 kWh/day per kW, while winter sees the lowest generation at just 2.54 kWh/day per kW of installed capacity. For those considering solar installation in Longshan, Jilin, it's worth noting that the ideal fixed tilt angle for solar panels to maximize year-round energy production is 38 degrees facing South. This specific angle has been calculated to optimize annual energy capture based on Longshan's latitude and seasonal solar patterns.

Environmental and Weather Considerations

Several environmental factors may impact solar production in Longshan. The location's northern latitude means winter months have shorter days and lower sun angles, explaining the significant drop in winter production. Additionally, the region experiences cold winters that can bring snow accumulation on panels if not installed at sufficient angles for natural snow shedding. Air pollution from nearby industrial areas and seasonal dust storms common in northern China can reduce solar panel efficiency by blocking sunlight. These particulates can also accumulate on panel surfaces, further decreasing performance if not regularly cleaned.

Preventative Measures for Optimal Production

To maximize solar energy production in Longshan despite these challenges, several preventative measures can be implemented:

• Install panels at the recommended 38-degree tilt to optimize year-round production and promote natural snow shedding in winter
• Implement automated cleaning systems or regular maintenance schedules to remove dust and pollution deposits
• Consider snow guards or heating elements for panels in areas prone to heavy snow accumulation
• Use high-efficiency panels that perform better in low-light conditions to improve winter production
• Incorporate tracking systems if budget allows, which can increase annual energy yield by following the sun's path

With proper installation and maintenance practices, solar PV systems in Longshan can provide reliable renewable energy, though supplementary power sources may be beneficial during the less productive winter months when output is less than half of summer production levels.

Note: The Northern Temperate Zone extends from 35° latitude North up to 66.5° 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 Longshan

Seasonal solar PV output for Latitude: 42.8885, Longitude: 125.1383 (Longshan, 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 38° South in Longshan, China

To maximize your solar PV system's energy output in Longshan, China (Lat/Long 42.8885, 125.1383) throughout the year, you should tilt your panels at an angle of 38° 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 Longshan, 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 Longshan, China. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 38° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
27° South in Summer	47° South in Autumn	58° South in Winter	36° 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 Longshan, 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 Longshan, 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 Longshan, China

The landscape around Longshan, situated in Jilin Province, northeastern China, is characterized by gentle undulating terrain typical of the Songliao Basin. This area features a blend of low hills, shallow valleys, and relatively flat plains with elevations generally ranging between 200-400 meters above sea level. The topography has been shaped by the region's geological history as part of the larger Northeast China Plain, with the influence of ancient river systems contributing to the formation of its current contours. To the east of Longshan, the terrain gradually rises toward the Changbai Mountains, though these major elevations remain quite distant from the immediate area. The western and southern approaches maintain the rolling landscape pattern, with occasional small hills punctuating otherwise modest relief. Several small rivers and streams traverse the region, creating shallow depressions in the landscape.

Optimal Areas for Solar PV Development

The most suitable areas for large-scale solar photovoltaic development near Longshan would be the gently sloping south-facing hillsides and the extensive flat plains that dominate the landscape to the southwest and west of the settlement. These areas offer several advantageous characteristics for solar installations: The flat plains provide large contiguous spaces that would minimize grading costs and engineering challenges during construction. They also present fewer shading concerns from surrounding terrain features, allowing for more consistent solar exposure throughout the day. The south-facing gentle slopes offer naturally optimized angles for solar collection, particularly during winter months when sun angles are lower. These areas typically experience less accumulation of dust and snow compared to completely flat terrain, as natural drainage patterns help keep panel surfaces clearer. Areas to avoid would include the limited wetland zones near water courses and any northern-facing slopes, which receive significantly reduced solar radiation in this northern hemisphere location. Additionally, any agricultural land currently under intensive cultivation might face regulatory restrictions for conversion to solar use. The soil composition in the region, primarily consisting of loess and alluvial deposits, generally provides adequate stability for standard solar mounting systems without requiring extensive specialized foundations. This factor, combined with the moderate topography, makes the area technically suitable for various solar installation methods including both fixed-tilt and single-axis tracking systems.

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.