The location at Berkovitsa, Montana, Bulgaria could be considered moderately ideal for generating energy via solar PV year-round. The amount of electricity that can be produced from each kilowatt of installed solar varies by season. During the summer months, you can expect to generate about 7.27kWh per day which is quite high and makes it an ideal time for solar energy production. In autumn, this drops to around 3.11kWh per day and further decreases in winter to around 1.89kWh per day due to shorter daylight hours and less intense sunlight.
However, in spring the output increases again to approximately 5.23 kWh/day as the days start getting longer and sunnier again. Therefore, if you're looking at maximizing your return on investment from a solar installation in Berkovitsa, Montana, it would be best during the summer and spring months.
For a fixed panel installation at this location, tilting panels towards south at an angle of 36 degrees is recommended for optimum year-round production from solar PV.
There might be some environmental or weather factors that could potentially impede solar production at this location such as heavy snowfall or cloudy weather during winter which may cover up the panels reducing their efficiency significantly or blocking sunlight completely respectively.
To ensure greater energy production despite these challenges, some preventative measures can be put into place when installing your system:
1) Solar panel cleaning: Regular maintenance including cleaning of panels especially after heavy snowfall will help keep them working efficiently.
2) Snow guards: Installing snow guards can prevent accumulation of snow on your panels.
3) Using micro-inverters instead of central inverters: This ensures that even if one panel is covered or not functioning properly due to local shading or debris/snow coverage; other panels continue producing power optimally.
4) Proper Installation: Ensuring professional installation which includes proper angling and positioning away from shade will also improve efficiency overall.
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 Berkovitsa
Seasonal solar PV output for Latitude: 43.2389, Longitude: 23.1224 (Berkovitsa, 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 Berkovitsa, Bulgaria
To maximize your solar PV system's energy output in Berkovitsa, Bulgaria (Lat/Long 43.2389, 23.1224) 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 Berkovitsa, 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 Berkovitsa, 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 Berkovitsa, 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 Berkovitsa, 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 Berkovitsa, Bulgaria
Berkovitsa is located in the western part of Bulgaria, nestled in the Balkan Mountains. The town sits at an altitude of 405 meters above sea level. The surrounding topography is characterized by a mix of mountainous terrain and valleys with numerous rivers and streams.
The region has significant solar potential due to its geographical location. However, the hilly and mountainous terrain may pose challenges for large-scale solar photovoltaic (PV) installations which require relatively flat land for optimal operation.
Despite this, there are still suitable areas for large-scale solar PV around Berkovitsa:
1. Lower lying areas or valleys: These could accommodate ground-mounted solar farms if they are not heavily forested or used intensively for agriculture.
2. South-facing slopes: While more challenging than flat land, south-facing slopes can be used to install PV panels as they receive a good amount of sunlight throughout the day.
3. Rooftops: In urban areas like Berkovitsa town itself, rooftops on buildings could be utilized for smaller scale but collectively significant PV installations.
However, any decision about installing large-scale solar PV should also take into account other factors such as local climate conditions (e.g., cloud cover), grid connectivity, land use policies and environmental considerations (e.g., impact on biodiversity). Detailed site-specific assessments would therefore be required to identify the most suited locations.
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!
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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Thursday 2nd of May 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.




