Solar PV Analysis of Trzin, Slovenia
Trzin, Slovenia, situated at latitude 46.139 and longitude 14.5743, presents a mixed opportunity for solar energy generation 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 Trzin, 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 stark contrast between summer and winter production, with summer yielding more than three times the energy of winter months. This variation is primarily due to the changing angle of the sun and daylight hours throughout the year at this latitude.
Optimal Panel Installation
To maximize year-round solar energy production in Trzin, fixed solar panels should be installed at a tilt angle of 39 degrees facing south. This angle has been calculated to provide the best overall performance across all seasons, taking into account the Earth's elliptical orbit and the location's specific solar elevation angles.
Environmental and Weather Considerations
While Trzin'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
- Occasional fog or overcast conditions may impact production, especially in autumn and winter
To mitigate these issues, consider installing panels at a steeper angle to encourage snow sliding off and using high-quality, anti-reflective coatings to maximize light absorption even in less-than-ideal conditions. Regular cleaning and maintenance of the panels can also help ensure optimal performance year-round.
Conclusion
Overall, Trzin offers a good location for solar PV installations, with excellent production potential in summer and spring. While winter months see significantly reduced output, proper panel positioning and maintenance can help maximize energy generation throughout the year. The substantial seasonal variations highlight the importance of considering energy storage solutions or grid connection to ensure a consistent power supply across all seasons.
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 Trzin
Seasonal solar PV output for Latitude: 46.139, Longitude: 14.5743 (Trzin, 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 Trzin, Slovenia
To maximize your solar PV system's energy output in Trzin, Slovenia (Lat/Long 46.139, 14.5743) 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 Trzin, 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 Trzin, 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 |
|---|---|---|---|
| 29° 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 Trzin, 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 Trzin, 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 Trzin, Slovenia
The area around Trzin, Slovenia, is characterized by a diverse and picturesque landscape. Trzin itself is situated in a relatively flat area, nestled in a small valley between two prominent geographical features. To the north and east of the town, you'll find the southern edges of the Kamnik–Savinja Alps, a mountain range that provides a stunning backdrop to the region. These mountains rise gradually from the valley floor, creating rolling foothills and eventually giving way to more dramatic peaks in the distance.
To the south and west of Trzin, the terrain becomes more level as it transitions into the Ljubljana Basin. This expansive lowland area is primarily flat or gently undulating, with occasional small hills and ridges breaking up the landscape. The basin is crisscrossed by numerous streams and rivers, including the Sava River, which flows nearby.
When considering areas suited for large-scale solar PV installations, the flat and open spaces of the Ljubljana Basin to the south and southwest of Trzin would likely be the most suitable. These areas offer several advantages for solar energy development:
- They have relatively level terrain, which simplifies construction and reduces costs associated with land preparation.
- The open nature of the basin means there are fewer obstructions that could cast shadows on solar panels, maximizing their exposure to sunlight throughout the day.
- The proximity to existing infrastructure and urban areas like Ljubljana could make it easier to connect solar installations to the power grid.
However, it's important to note that the use of agricultural land for solar installations can be controversial, and careful planning would be necessary to balance energy production with preserving valuable farmland. Additionally, while the mountainous areas to the north might receive good sun exposure on south-facing slopes, the challenges of installation and maintenance in steep terrain generally make these locations less ideal for large-scale solar projects.
Any specific site selection would require detailed environmental and technical assessments, taking into account factors such as local climate patterns, existing land use, and proximity to power infrastructure. The final decision would need to balance energy production potential with environmental and social considerations.
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!
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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Sunday 21st of July 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.
