Solar PV Analysis of Dobrich, Bulgaria
Dobrich, Bulgaria, situated at coordinates 43.5606, 27.8299, presents a mixed picture 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
The solar energy potential in Dobrich varies considerably across seasons. Summer stands out as the most productive period, with an impressive average daily output of 7.02 kWh per kW of installed solar capacity. Spring follows as the second-best season, yielding 5.22 kWh/day. However, autumn and winter see a substantial drop in energy production, with 3.14 kWh/day and 1.84 kWh/day respectively.
These figures indicate that Dobrich experiences optimal solar conditions from late spring through early autumn. During this period, longer daylight hours and higher sun angles contribute to increased energy generation. Conversely, the winter months present challenges due to shorter days and lower sun angles, resulting in significantly reduced output.
Optimizing Panel Installation
To maximize year-round solar energy production in Dobrich, fixed solar panels should be installed at a tilt angle of 37 degrees facing south. This optimal angle helps balance energy capture across seasons, compensating for the sun's changing position throughout the year.
Environmental and Weather Considerations
While Dobrich's location is generally favorable for solar energy, there are some factors that could potentially impact production:
- Snow accumulation in winter may temporarily reduce panel efficiency
- Dust and pollen during dry periods can decrease panel performance
To mitigate these issues, regular panel cleaning and maintenance should be scheduled. Additionally, installing panels at the recommended angle helps with natural cleaning during rainfall and reduces snow accumulation. For areas prone to heavy snowfall, consider using snow guards or heated panel systems to prevent long-term coverage.
Overall, while Dobrich experiences significant seasonal variations in solar output, proper installation techniques and regular maintenance can help maximize energy production throughout the year.
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 Dobrich
Seasonal solar PV output for Latitude: 43.5606, Longitude: 27.8299 (Dobrich, 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 37° South in Dobrich, Bulgaria
To maximize your solar PV system's energy output in Dobrich, Bulgaria (Lat/Long 43.5606, 27.8299) throughout the year, you should tilt your panels at an angle of 37° 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 Dobrich, 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 Dobrich, Bulgaria. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 37° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 28° South in Summer | 47° 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 Dobrich, 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 Dobrich, 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 Dobrich, Bulgaria
The area around Dobrich, Bulgaria, is characterized by gently rolling plains and low hills. This region, known as the Dobrudja plateau, is part of the larger Danubian Plain that extends across much of northern Bulgaria. The landscape is predominantly flat to slightly undulating, with elevations typically ranging from 150 to 250 meters above sea level.
The topography in this area is shaped by millennia of wind and water erosion, resulting in a smooth, open terrain. There are few significant natural barriers or steep slopes in the immediate vicinity of Dobrich. The land is mostly covered by agricultural fields, as the region is known for its fertile soil and is an important center for grain production in Bulgaria.
To the east of Dobrich, the terrain gradually descends towards the Black Sea coast, about 30-40 kilometers away. In this direction, you'll find some more pronounced hills and valleys as you approach the coastal area. To the west and north, the landscape remains relatively flat, extending into the heart of the Dobrudja region.
Regarding areas suitable for large-scale solar PV (photovoltaic) installations, the region around Dobrich offers several advantages. The flat or gently sloping terrain is ideal for solar farms, as it minimizes the need for extensive land preparation and allows for efficient layout of solar panels. Areas to the south and west of Dobrich would be particularly well-suited, as they offer vast stretches of open land with minimal shading from natural features.
The rural areas surrounding Dobrich, especially those currently used for agriculture, could be prime candidates for solar PV development. These locations typically have good road access, which is crucial for the construction and maintenance of solar installations. Additionally, the region's climate, characterized by abundant sunshine and relatively mild temperatures, is favorable for solar energy production.
However, it's important to note that any large-scale solar project would need to balance energy production goals with the preservation of valuable agricultural land, as the Dobrich region is a key area for Bulgaria's food production. Ideal locations would be those that are less productive for agriculture or are on marginal lands that are not crucial for crop cultivation.
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: Saturday 21st of September 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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