Solar PV Analysis of Kranj, Slovenia
Kranj, Slovenia, situated at latitude 46.2383 and longitude 14.3524, presents a mixed landscape for solar energy production throughout the year. This location in the Northern Temperate Zone experiences significant seasonal variations in solar output, which impacts the overall efficiency of photovoltaic (PV) systems.
Seasonal Solar Performance
Summer stands out as the most productive season for solar energy in Kranj, with an impressive daily output of 6.55 kWh per kW of installed solar capacity. Spring follows as the second-best season, generating 4.66 kWh/day. Autumn sees a considerable drop in production to 3.02 kWh/day, while winter experiences the lowest output at just 1.84 kWh/day.
These figures highlight the substantial difference between peak and off-peak seasons, with summer producing more than three times the energy of winter. This variation suggests that while solar energy can be a valuable resource in Kranj, it may require supplementary power sources or energy storage solutions to maintain consistent year-round energy supply.
Optimal Panel Installation
For fixed solar panel installations in Kranj, the ideal tilt angle to maximize year-round production is 39 degrees facing South. This angle is calculated based on the location's latitude and accounts for the Earth's elliptical orbit, ensuring the best possible exposure to sunlight throughout the year.
Environmental Considerations
While Kranj's location is generally favorable for solar energy production, there are some environmental factors to consider:
- Snow accumulation in winter can temporarily reduce panel efficiency, necessitating regular cleaning or the installation of snow-shedding systems.
- The region's occasional fog and overcast days, particularly in autumn and winter, may impact solar output. Using high-efficiency panels and microinverters can help mitigate these effects.
To maximize energy production in Kranj, consider implementing dual-axis tracking systems for larger installations, which can increase energy yield by following the sun's path. Additionally, regular maintenance and cleaning of panels, especially after snowfall or during periods of high pollen count, can help maintain optimal performance.
In conclusion, while Kranj's location presents challenges for year-round solar energy production, particularly in winter, it still offers significant potential, especially during the spring and summer months. With proper planning and the implementation of appropriate technologies, solar PV systems can be a valuable component of the local energy mix.
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 60 locations across Slovenia. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Slovenia by location
Solar output per kW of installed solar PV by season in Kranj
Seasonal solar PV output for Latitude: 46.2383, Longitude: 14.3524 (Kranj, Slovenia), 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 39° South in Kranj, Slovenia
To maximize your solar PV system's energy output in Kranj, Slovenia (Lat/Long 46.2383, 14.3524) throughout the year, you should tilt your panels at an angle of 39° 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 Kranj, Slovenia
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 Kranj, Slovenia. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 39° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 30° South in Summer | 49° South in Autumn | 60° South in Winter | 39° 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 Kranj, Slovenia
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 Kranj, Slovenia.
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 Kranj, Slovenia
The topography around Kranj, Slovenia is characterized by a diverse landscape that combines mountainous terrain, rolling hills, and river valleys. Kranj itself is situated in a basin at the confluence of the Sava and Kokra rivers, surrounded by the foothills of the Julian Alps and the Kamnik-Savinja Alps.
To the north and northwest of Kranj, the terrain becomes increasingly mountainous, with steep slopes and forested areas. The Karavanke mountain range forms a natural border between Slovenia and Austria in this region. To the east and southeast, the landscape transitions into more gently rolling hills and plateaus, known as the Ljubljana Basin.
The southern and southwestern areas around Kranj feature a mix of hills and flatter terrain, with the Škofja Loka Hills providing a picturesque backdrop. The Sava River valley stretches to the east and west of the city, creating a relatively flat corridor through the otherwise hilly landscape.
For large-scale solar PV installations, the areas most suited would likely be found to the south and southeast of Kranj. These regions tend to have more open, gently sloping terrain that receives better sun exposure throughout the day. The flatter areas within the Ljubljana Basin, particularly those not used for agriculture or urban development, could be potential candidates for solar farms.
Additionally, some of the elevated plateaus and south-facing slopes in the surrounding hills might offer good locations for solar installations, provided they are easily accessible and not heavily forested. However, it's important to note that the specific suitability of any site would depend on factors such as local zoning regulations, grid connectivity, and environmental considerations.
While the mountainous areas to the north may receive good sun exposure at higher elevations, the challenging terrain and potential for snow accumulation make these less practical for large-scale solar projects. Similarly, the narrow river valleys, while flat, may not be ideal due to potential shading from surrounding hills and competing land uses.
Slovenia solar PV Stats as a country
Slovenia ranks 60th in the world for cumulative solar PV capacity, with 367 total MW's of solar PV installed. Each year Slovenia is generating 175 Watts from solar PV per capita (Slovenia ranks 28th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Slovenia?
Yes, there are incentives for businesses wanting to install solar energy in Slovenia. The Slovenian government offers a range of financial incentives and subsidies for businesses that install solar energy systems. These include grants, tax credits, and other forms of support. Additionally, the government has set up a number of programs to promote the use of renewable energy sources such as solar power.
Do you have more up to date information than this on incentives towards solar PV projects in Slovenia? Please reach out to us and help us keep this information current. Thanks!
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Monday 2nd of September 2024
Last Updated: Monday 21st of July 2025
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.
