The location in Svoge, Sofia, Bulgaria, situated at 42.963° N, 23.3477° E, presents a mixed scenario for solar PV energy generation throughout the year. This Northern Temperate Zone location experiences significant seasonal variations in solar energy production, which impacts the overall efficiency of solar installations.
Seasonal Solar Energy Production
Solar energy generation at this location is most robust during the summer months, with an average daily output of 6.99 kWh per kW of installed solar capacity. Spring follows as the second most productive season, yielding 5.00 kWh/day. However, there's a notable decline in energy production during autumn and winter, with outputs of 3.27 kWh/day and 2.00 kWh/day, respectively.
The substantial difference between summer and winter production highlights the location's susceptibility to seasonal changes. While summer offers excellent solar potential, the winter months present challenges due to shorter days and potentially overcast conditions.
Optimal Panel Installation
To maximize year-round solar energy production at this location, fixed solar panels should be installed at a tilt angle of 36 degrees facing south. This optimal angle helps to capture the most sunlight throughout the year, balancing the high summer sun and the lower winter sun angles.
Environmental and Weather Considerations
Several factors could potentially impact solar production in Svoge:
- Snow accumulation in winter, which can cover panels and reduce efficiency
- Fog or mist, particularly in valley areas, which may reduce sunlight reaching the panels
- Potential for air pollution from nearby industrial activities or urban areas
To mitigate these issues, consider installing panels at a steeper angle to encourage snow sliding off, using anti-reflective coatings to improve performance in low-light conditions, and implementing regular cleaning schedules to remove any accumulated dirt or pollutants.
Conclusion
While Svoge's location isn't ideal for year-round solar production due to significant seasonal variations, it still offers good potential, especially from spring through autumn. With proper installation techniques and maintenance practices, solar PV systems can be a viable source of renewable energy in this Bulgarian locale.
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 68 locations across Bulgaria. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Bulgaria by location
Solar output per kW of installed solar PV by season in Svoge
Seasonal solar PV output for Latitude: 42.963, Longitude: 23.3477 (Svoge, Bulgaria), 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 36° South in Svoge, Bulgaria
To maximize your solar PV system's energy output in Svoge, Bulgaria (Lat/Long 42.963, 23.3477) throughout the year, you should tilt your panels at an angle of 36° 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 Svoge, Bulgaria
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 Svoge, Bulgaria. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 36° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 27° South in Summer | 46° South in Autumn | 57° South in Winter | 35° 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 Svoge, Bulgaria
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 Svoge, Bulgaria.
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 Svoge, Bulgaria
The topography around Svoge, Bulgaria is characterized by rugged, mountainous terrain. Svoge is nestled in the western part of the Balkan Mountains, also known as the Stara Planina range. The landscape is dominated by steep slopes, deep valleys, and forested hills. The Iskar River cuts through this region, creating a dramatic gorge that adds to the area's scenic beauty.
The town of Svoge itself sits at an elevation of approximately 480 meters (1,575 feet) above sea level. As you move away from the town center, the elevation quickly increases, with surrounding peaks reaching heights of over 1,000 meters (3,280 feet). This mountainous terrain creates a picturesque setting but also presents challenges for large-scale development projects.
When considering areas nearby that would be most suited to large-scale solar PV (photovoltaic) installations, it's important to note that the mountainous nature of the region poses some limitations. Ideal locations for solar farms typically require relatively flat or gently sloping land with good sun exposure. In the vicinity of Svoge, such areas are not abundant due to the predominance of steep slopes and forested areas.
However, some potential locations for solar PV installations might include:
- Cleared plateaus or ridges at higher elevations, where trees are less dense and sun exposure is better.
- South-facing slopes that receive more direct sunlight throughout the day.
- Areas along the Iskar River valley where the terrain is slightly flatter, though care must be taken to avoid flood-prone zones.
- Abandoned or reclaimed mining sites in the region, which may offer larger, relatively flat areas suitable for solar panel installation.
It's worth noting that while the mountainous terrain presents challenges for large-scale solar projects, it may be more feasible to implement smaller, distributed solar installations on buildings or in small clearings throughout the area. Additionally, careful environmental impact assessments would be necessary to ensure that any large-scale solar development does not negatively affect the region's biodiversity and natural beauty.
Bulgaria solar PV Stats as a country
Bulgaria ranks 41st in the world for cumulative solar PV capacity, with 1,186 total MW's of solar PV installed. This means that 4.70% of Bulgaria's total energy as a country comes from solar PV (that's 18th in the world). Each year Bulgaria is generating 171 Watts from solar PV per capita (Bulgaria ranks 31st in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Bulgaria?
Yes, there are incentives for businesses wanting to install solar energy in Bulgaria. The Bulgarian government offers a number of financial incentives and subsidies for businesses that install solar energy systems. These include grants, tax credits, and other forms of support. Additionally, the European Union has provided funding for renewable energy projects in Bulgaria through its Horizon 2020 program.
Do you have more up to date information than this on incentives towards solar PV projects in Bulgaria? 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: Saturday 17th of August 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.
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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.




