Solar PV Analysis of Kazanlak, Bulgaria
Situated in Bulgaria, the city of Kazanlak (latitude: 42.6223, longitude: 25.3937) presents a favorable environment for solar photovoltaic (PV) installations. The efficacy of solar power generation varies by season due to the changing length and intensity of sunlight throughout the year. During summer, each kilowatt of installed solar capacity generates an average daily output of 6.96 kWh. The autumn season sees a decrease in production to an average daily output per kilowatt installed at 3.22 kWh due to shorter daylight hours and lower sun intensity compared to summer months.
Winter months experience further reduction in solar power production with each kilowatt yielding approximately 1.99 kWh per day on average; this is largely attributed to shorter daylight hours and potential weather impediments such as heavy snowfall or rainfall which can obscure sunlight from reaching the panels effectively.
However, as spring approaches, there is a notable increase in energy production with an approximate yield of 5.11 kWh per day for every kilowatt installed due to longer daylight hours and improved weather conditions.
To optimize energy capture from available sunlight at this location, it is recommended that fixed panel installations are tilted at an angle of approximately 36 degrees facing southward; this ensures maximum exposure towards incoming sunlight throughout the year.
While Kazanlak's climate generally supports efficient solar energy generation, it's important to consider local environmental factors that could potentially hinder productivity levels such as heavy rainfall or snow during winter months which could obstruct panels from sufficiently capturing sunlight for conversion into electricity.
In light of these factors, preventative measures should be undertaken during installation such as ensuring adequate panel tilting for optimal sun exposure and considering potential obstructions like trees or buildings that might cast shadows onto panels thereby reducing their effectiveness in capturing sunlight efficiently.
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 Kazanlak
Seasonal solar PV output for Latitude: 42.6223, Longitude: 25.3937 (Kazanlak, 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 Kazanlak, Bulgaria
To maximize your solar PV system's energy output in Kazanlak, Bulgaria (Lat/Long 42.6223, 25.3937) 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 Kazanlak, 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 Kazanlak, 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 Kazanlak, 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 Kazanlak, 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 Kazanlak, Bulgaria
The topography around Kazanlak, Bulgaria is generally flat and open with some rolling hills in the surrounding area. The nearby areas that would be most suitable for large-scale solar PV installations are those with low elevation and clear skies, such as the plains to the south of the city. Areas to the east and west of Kazanlak may also be suitable, although there may be more cloud cover due to higher elevations.
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: Thursday 7th of September 2023
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.
