Solar PV Analysis of Geoje-si, South Korea
Geoje-si, South Korea is a fairly good location for year-round energy generation via solar PV. During the summer and spring seasons, you can expect to generate around 5.67kWh/day and 5.63kWh/day respectively per kW of installed solar, which are relatively high outputs. During autumn and winter, the output drops to about 3.89kWh/day and 3.28kWh/day respectively per kW of installed solar; these are lower but still substantial amounts.
The best times of year to generate solar power at this location would be during the longer daylight hours in summer and spring when the sun's rays are most direct.
To maximize your total annual production from a fixed panel installation at this location, you should tilt your panels at an angle of 32 degrees facing south.
However, there may be some local factors that could potentially hinder your solar production here:
1) Weather: Geoje-si has a humid subtropical climate with heavy rainfall during the monsoon season (June - September). This could reduce sunlight exposure on cloudy or rainy days.
2) Air Pollution: Industrial areas nearby might produce air pollution that could obstruct sunlight.
3) Shadows: Buildings or natural features like mountains might cast shadows over your panels depending on their placement.
To mitigate these issues:
1) For weather-related problems like rain or clouds obscuring sunlight, unfortunately there isn't much you can do other than ensuring your system is as efficient as possible so it can make the most out of available light.
2) If air pollution is an issue in this area, regular cleaning of your panels will help keep them operating efficiently by removing any dirt or grime build-up.
3) To avoid shadowing effects from buildings or natural features, consider carefully where you place your panels – higher locations with clear access to southern skies would be best if possible.
In conclusion, while Geoje-si does have some challenges for solar energy production, with careful planning and maintenance, it could still be a very productive 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 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 Geoje-si
Seasonal solar PV output for Latitude: 34.9, Longitude: 128.6667 (Geoje-si, 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 Geoje-si, South Korea
To maximize your solar PV system's energy output in Geoje-si, South Korea (Lat/Long 34.9, 128.6667) 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 Geoje-si, 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 Geoje-si, 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 | 50° 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 Geoje-si, 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 Geoje-si, 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 Geoje-si, South Korea
Geoje-si, South Korea is located on Geoje Island, which is the second largest island in South Korea. The topography of this area is characterized by a mixture of flat lands and mountainous regions. The coastal areas are generally flat with sandy beaches and small plains, while the inland areas are more mountainous with numerous peaks and valleys.
The region has a relatively high amount of sunlight due to its southern location in Korea peninsula. Therefore, the flat coastal areas could be suitable for large-scale solar PV installations because they provide ample space that receives direct sunlight most of the time.
However, practical considerations such as land use restrictions, proximity to power grids or infrastructure for transporting electricity may also affect where solar farms can be installed. In addition to this, environmental impact assessments would need to be conducted to ensure that large-scale solar installations do not adversely affect local ecosystems or wildlife habitats.
Furthermore, given the presence of mountains and valleys in Geoje-si's topography, it may also be possible to install smaller scale solar PV systems on south-facing slopes which receive good amounts of sunlight throughout the day. These kinds of installations can often integrate well into existing landscapes without requiring significant alterations to land use patterns or causing substantial environmental impacts.
Lastly but importantly considering South Korea’s push towards renewable energy sources particularly wind energy along its coastlines; offshore floating photovoltaic (FPV) systems could also potentially be explored around Geoje Island if suitable locations can be found within reasonable proximity to necessary infrastructure.
It should however always come after thorough feasibility studies including technical and economic aspects as well as consultation with local communities before any decision about installing large-scale solar PV systems can be made.
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: Thursday 6th of June 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.
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.
