Jeonju, South Korea, located at 35.8396° N, 127.0671° E in the Northern Temperate Zone, offers relatively good conditions for solar PV energy generation throughout the year, though with seasonal variations.

Seasonal Solar Production

Solar energy production in Jeonju follows a predictable seasonal pattern. Summer and spring are the most productive seasons, generating approximately 5.35 kWh and 5.33 kWh per day per kW of installed capacity, respectively. Autumn sees a moderate decrease to 3.69 kWh/day, while winter production drops to its lowest at 3.02 kWh/day per kW installed.

This pattern indicates that Jeonju experiences strong solar potential during half the year (spring and summer), with more modest but still viable production during autumn and winter months. The relatively small difference between summer and spring production suggests consistent performance during the warmer months.

Optimal Panel Installation

For fixed panel installations in Jeonju, the ideal tilt angle to maximize year-round solar production is 32 degrees facing South. This angle has been calculated to optimize energy capture across seasonal variations in sun position, accounting for Earth's elliptical orbit and weighted by the daily PV potential at this specific location.

Environmental and Weather Considerations

Several factors may impact solar production in Jeonju:

• Monsoon season (typically June-August) brings heavy rainfall and increased cloud cover, potentially reducing summer production despite longer daylight hours
• Yellow dust storms from China (primarily in spring) can deposit particulate matter on panels, reducing efficiency
• Occasional typhoons in late summer and early autumn may bring extreme weather conditions
• Winter snowfall, though typically light in Jeonju, can temporarily cover panels

Preventative Measures

To maximize solar production in Jeonju despite these challenges, consider implementing these preventative measures:

• Install panels with a slightly steeper angle than the optimal 32 degrees in areas prone to dust accumulation or light snow to facilitate natural cleaning
• Implement regular cleaning schedules, especially after yellow dust events
• Use high-quality mounting systems rated for typhoon-strength winds
• Consider microinverters or power optimizers to minimize production losses when some panels are partially shaded or dirty
• Install automated cleaning systems in hard-to-reach installations

With proper installation and maintenance, Jeonju's solar potential can be effectively harnessed, with particular emphasis on maximizing the highly productive spring and summer months to offset the reduced winter production.

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 Jeonju

Seasonal solar PV output for Latitude: 35.8396, Longitude: 127.0671 (Jeonju, 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 Jeonju, South Korea

To maximize your solar PV system's energy output in Jeonju, South Korea (Lat/Long 35.8396, 127.0671) 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 Jeonju, 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 Jeonju, 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
20° South in Summer	41° South in Autumn	51° South in Winter	29° 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 Jeonju, 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 Jeonju, South Korea.

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 Jeonju, South Korea

Jeonju, a city situated in the North Jeolla Province of South Korea, features diverse topographical characteristics that influence its landscape and potential for renewable energy development. The city lies in a basin surrounded by mountains, creating a natural amphitheater effect with varying elevations throughout the region.

Mountain Ranges and Valleys

The terrain around Jeonju is characterized by the presence of several mountain ranges that form part of the larger Noryeong Mountain Range system. To the east and northeast of the city rises Moaksan Mountain, reaching heights of approximately 793 meters. This mountain creates a significant topographical feature that influences local weather patterns and land use. The northwestern boundary is marked by Gunsangsan Mountain, while the southwest area transitions into the broader Honam Plain. Between these elevated areas lie numerous valleys and smaller basins where settlements and agricultural activities have developed over centuries. The Jeonju Basin itself is relatively flat, allowing for the city's historical development and expansion. The Jeonju River (also known as Jeonjucheon) flows through this basin, eventually connecting to the larger Mangyeonggang River system that drains toward the Yellow Sea.

Transition to Plains

As one moves southwest from Jeonju, the landscape gradually transitions from the basin surrounded by mountains to the more extensive Honam Plain. This plain represents one of Korea's major agricultural regions, with relatively flat terrain that stretches toward the coastal areas. The elevation decreases progressively as one moves from the city center toward the southwestern regions of North Jeolla Province.

Potential Areas for Solar PV Development

When considering large-scale solar photovoltaic (PV) installations near Jeonju, several topographical factors must be evaluated. The most suitable areas would typically include: The southwestern plains extending from Jeonju toward Gunsan and Iksan offer the most promising locations for large-scale solar development. These areas feature relatively flat terrain with fewer shadowing effects from mountains, making them ideal for solar farms that require extensive, unobstructed land. The lower elevation areas of the Honam Plain provide substantial contiguous land parcels that could accommodate utility-scale installations. Some of the gently sloping foothills surrounding the Jeonju Basin, particularly those with southern exposure, could also be suitable for solar development. These areas receive consistent sunlight throughout the day while requiring less extensive land modification than steeper terrain. The transitional zones between the basin and the surrounding mountains often feature this type of topography. Former agricultural lands that have been abandoned or are less productive might present opportunities for solar development without competing with high-value cropland. These areas are typically found scattered throughout the region, particularly in the transition zones between urban and rural landscapes.

Topographical Challenges

Despite these opportunities, the topography around Jeonju presents certain challenges for solar PV development. The mountainous areas to the east and north, while offering elevation advantages, often have steep slopes that make large-scale installations technically difficult and economically prohibitive. Additionally, these areas frequently experience shadowing effects during different parts of the day, reducing their overall suitability. The river valleys, though flat, are prone to seasonal flooding and are often designated for agricultural use due to their fertile soils. This creates potential land-use conflicts that would need to be addressed in any solar development planning. Urban expansion from Jeonju and neighboring cities also constrains available land, particularly in the flatter areas that would otherwise be ideal for solar installations. This urban pressure continues to reduce the amount of suitable land available for large-scale renewable energy projects. In conclusion, the topography around Jeonju offers both opportunities and challenges for solar PV development. The southwestern plains extending toward the Yellow Sea represent the most promising areas for large-scale installations, while the mountainous regions to the east and north are generally less suitable due to their steeper slopes and shadowing effects.

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!

Citation Guide

Article Details for Citation

Tell Us About Your Work

We love seeing how our research helps others! If you've cited this article in your work, we'd be delighted to hear about it. Drop us a line via our Contact Us page or on X, to share where you've used our information - we may feature a link to your work on our site. This helps create a network of valuable resources for others in the solar energy community and helps us understand how our research is contributing to the field. Plus, we occasionally highlight exceptional works that reference our research on our social media channels.

Feeling generous?

Share this with your friends!

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.