Jung-gu, Ulsan, South Korea, located at latitude 35.549 and longitude 129.3464 in the Northern Temperate Zone, offers a relatively favorable environment for solar PV energy generation throughout the year. The location experiences distinct seasonal variations in solar output, with peak production occurring during the spring and summer months.
Seasonal Solar Performance
Spring and summer are the most productive seasons for solar energy in Jung-gu. Spring yields an impressive 5.30 kWh per day for each kilowatt of installed solar capacity, while summer closely follows with 5.28 kWh/day. These seasons benefit from longer daylight hours and generally clearer skies, maximizing solar panel efficiency.
Autumn and winter see a decrease in solar output, with 3.61 kWh/day and 3.19 kWh/day respectively, per kilowatt of installed capacity. The reduced production during these months is primarily due to shorter daylight hours and potentially more overcast conditions.
Optimal Panel Installation
To maximize year-round solar energy production in Jung-gu, Ulsan, fixed solar panels should be installed at a tilt angle of 32 degrees facing south. This angle optimizes the panels' exposure to sunlight throughout the year, accounting for the location's latitude and the Earth's elliptical orbit.
Environmental Considerations
While Jung-gu's climate is generally conducive to solar energy production, there are some environmental factors to consider:
- Monsoon season: Jung-gu experiences a monsoon season, typically from June to September, which can bring increased cloud cover and rainfall, potentially reducing solar output.
- Air pollution: As an urban area, Jung-gu may experience periods of increased air pollution, which can slightly reduce solar panel efficiency.
Preventative Measures
To mitigate these environmental challenges and ensure optimal solar energy production, consider the following measures when installing solar panels in Jung-gu:
1. Use high-efficiency, weather-resistant panels that perform well in varying conditions. 2. Implement a regular cleaning schedule to remove dust and pollutants from panel surfaces. 3. Install a monitoring system to track performance and quickly identify any issues. 4. Consider adding a small overcapacity to compensate for reduced output during the monsoon season.
Overall, Jung-gu's location provides a good opportunity for solar PV energy generation, with strong performance in spring and summer offsetting the reduced output in autumn and winter. With proper installation and maintenance, solar panels can be an effective and sustainable energy solution in this South Korean city.
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 Jung-gu
Seasonal solar PV output for Latitude: 35.549, Longitude: 129.3464 (Jung-gu, 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 32° South in Jung-gu, South Korea
To maximize your solar PV system's energy output in Jung-gu, South Korea (Lat/Long 35.549, 129.3464) throughout the year, you should tilt your panels at an angle of 32° 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 Jung-gu, 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 Jung-gu, South Korea. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 32° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 19° South in Summer | 41° South in Autumn | 51° South in Winter | 28° 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 Jung-gu, 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 Jung-gu, 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 Jung-gu, South Korea
Jung-gu, located in South Korea at coordinates 35.549 latitude and 129.3464 longitude, is situated in a diverse topographical region. The area is characterized by a mix of coastal plains, rolling hills, and mountainous terrain. To the east, the city of Ulsan, where Jung-gu is located, meets the East Sea (also known as the Sea of Japan), creating a picturesque coastline with sandy beaches and rocky cliffs. Moving inland from the coast, the landscape gradually transitions into gently rolling hills and low-lying plains. These areas are interspersed with small rivers and streams that flow towards the sea. The terrain becomes more rugged and elevated as one moves further west, with the foothills of the Taebaek Mountain Range beginning to emerge. To the north and northwest of Jung-gu, the topography becomes increasingly mountainous. The Yeongnam Alps, a part of the larger Taebaek Mountain Range, dominate the landscape in this direction. These mountains, while not as tall as some of Korea's highest peaks, still reach impressive heights and feature steep slopes covered in dense forests.
Suitable Areas for Large-scale Solar PV
When considering areas nearby that would be most suited to large-scale solar photovoltaic (PV) installations, several factors come into play. The ideal locations would have ample sunlight exposure, relatively flat terrain, and minimal shading from surrounding features. The coastal plains to the east and southeast of Jung-gu offer promising potential for solar PV development. These areas benefit from open landscapes with fewer obstructions to block sunlight. The gentle slopes in this region could also be advantageous, as they may allow for optimal panel positioning to capture maximum sunlight throughout the day. Some of the lower hills and plateaus in the surrounding area might also be suitable for solar installations. These elevated areas could potentially receive more consistent sunlight exposure, free from shadows cast by taller landscape features. However, care would need to be taken to avoid steep slopes or areas with dense vegetation that could complicate installation and maintenance. It's important to note that while the mountainous regions to the north and west offer scenic beauty, they are generally less suitable for large-scale solar PV projects. The steep terrain, varied elevations, and potential for shading from peaks and ridges make these areas more challenging for solar development. Ultimately, detailed site surveys and environmental impact assessments would be necessary to determine the most appropriate locations for solar PV installations in the vicinity of Jung-gu. Factors such as local climate patterns, land use regulations, and proximity to existing power infrastructure would also play crucial roles in site selection.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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Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Friday 4th of April 2025
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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