Solar PV Analysis of Yesan, South Korea
Yesan, South Korea, located at latitude 36.6781 and longitude 126.6946, presents a moderately favorable environment for solar PV energy generation throughout the year. This location in the Northern Temperate Zone experiences distinct seasonal variations in solar energy production.
Seasonal Solar Performance
Summer stands out as the most productive season, with an impressive average daily output of 5.56 kWh per kW of installed solar capacity. Spring follows closely behind, generating 5.36 kWh/day. These seasons offer excellent conditions for solar energy production, with longer days and more direct sunlight.
Autumn sees a noticeable decrease in solar output, producing 3.81 kWh/day. Winter experiences the lowest production at 2.90 kWh/day, primarily due to shorter days and the sun's lower position in the sky.
Optimal Panel Installation
To maximize year-round solar energy production in Yesan, fixed solar panels should be installed at a tilt angle of 33 degrees facing South. This angle optimizes the panels' exposure to sunlight throughout the year, balancing the varying sun positions across seasons.
Environmental Considerations
While Yesan's climate is generally conducive to solar energy production, there are some factors that could potentially impact efficiency:
- Seasonal monsoons: Heavy rainfall during the summer monsoon season may temporarily reduce solar output.
- Air pollution: Yesan's proximity to industrial areas might lead to occasional smog, which can slightly diminish solar panel efficiency.
Preventative Measures
To mitigate these environmental factors and ensure optimal solar energy production, consider implementing the following measures:
Install a reliable cleaning system to remove dust and pollutants from the panels regularly. Use high-quality, anti-reflective glass on the solar panels to maximize light absorption even in less-than-ideal conditions. Consider a tracking system for larger installations to follow the sun's path and increase energy yield, especially during the less productive winter months.
Overall, while Yesan experiences seasonal variations in solar energy production, its location still offers a good opportunity for solar PV installations with proper planning and maintenance.
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 124 locations across South Korea. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in South Korea by location
Solar output per kW of installed solar PV by season in Yesan
Seasonal solar PV output for Latitude: 36.6781, Longitude: 126.6946 (Yesan, South Korea), 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 33° South in Yesan, South Korea
To maximize your solar PV system's energy output in Yesan, South Korea (Lat/Long 36.6781, 126.6946) throughout the year, you should tilt your panels at an angle of 33° 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 Yesan, South Korea
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 Yesan, South Korea. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 33° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 20° South in Summer | 41° South in Autumn | 51° South in Winter | 30° 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 Yesan, South Korea
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 Yesan, South Korea.
Our calculation method
- Solar Position:
We determine the Sun's position on the Winter solstice using the location's latitude and solar declination. - Shadow Projection:
We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle. - 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 Yesan, South Korea
The topography around Yesan, South Korea, is characterized by a mix of gentle hills, low mountains, and flat agricultural lands. This region is part of the Chungcheongnam-do province, which is known for its diverse landscape.
The area surrounding Yesan features rolling hills that gradually rise from the coastal plains to the west. These hills are typically covered with forests and small farms. As you move eastward from Yesan, the terrain becomes more mountainous, with several small mountain ranges dotting the landscape. These mountains, while not particularly high compared to other parts of South Korea, still provide a significant contrast to the flatter areas closer to the coast.
The western part of the region, closer to the Yellow Sea, is generally flatter and includes expansive agricultural plains. These areas are crisscrossed by numerous small rivers and streams, which have shaped the landscape over time. The Yesan River, a tributary of the Geum River, flows through the area, creating fertile valleys and flood plains that are ideal for agriculture.
For large-scale solar PV installations, the most suitable areas would likely be found in the flatter regions to the west and southwest of Yesan. These areas offer several advantages for solar energy production:
- The relatively flat terrain makes construction and maintenance of solar arrays easier and more cost-effective.
- There are fewer obstructions to sunlight, such as tall mountains or dense forests, which could cast shadows on solar panels.
- Many of these areas are already used for agriculture, and solar farms could potentially be integrated with existing land use patterns.
- The proximity to the coast means these areas generally experience less fog and cloud cover compared to more inland locations, resulting in more consistent sunlight exposure.
However, it's important to note that any large-scale solar project would need to carefully consider local environmental factors, land use regulations, and the potential impact on existing agricultural activities. Additionally, areas close to existing power infrastructure would be preferable to minimize the costs of connecting new solar installations to the grid.
South Korea solar PV Stats as a country
South Korea ranks 8th in the world for cumulative solar PV capacity, with 18,161 total MW's of solar PV installed. This means that 3.80% of South Korea's total energy as a country comes from solar PV (that's 21st in the world). Each year South Korea is generating 350 Watts from solar PV per capita (South Korea ranks 9th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in South Korea?
Yes, there are incentives for businesses wanting to install solar energy in South Korea. The Korean government offers a variety of financial incentives and subsidies for businesses that install solar energy systems. These include tax credits, grants, loans, and other forms of support. Additionally, the government has implemented a feed-in tariff system which guarantees a fixed price for electricity generated from renewable sources such as solar power. This helps to make the installation of solar energy systems more attractive to businesses by providing them with a guaranteed return on their investment.
Do you have more up to date information than this on incentives towards solar PV projects in South Korea? Please reach out to us and help us keep this information current. Thanks!
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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Monday 19th of August 2024
Last Updated: Monday 21st of July 2025
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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.
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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.
