Popovo, Targovishte, Bulgaria, situated at latitude 43.3484 and longitude 26.2385, presents a mixed picture for solar energy generation throughout the year. This location in the Northern Temperate Zone experiences significant seasonal variations in solar energy production, which affects the overall efficiency of photovoltaic (PV) systems.

Seasonal Solar Energy Production

The solar energy output in Popovo varies considerably across the four meteorological seasons. Summer stands out as the most productive period, with an impressive 6.92 kWh per day for each kilowatt of installed solar capacity. Spring follows as the second-best season, generating 5.13 kWh/day. Autumn sees a significant drop to 3.13 kWh/day, while winter experiences the lowest output at just 1.77 kWh/day.

These figures indicate that solar energy production in Popovo is most effective from late spring through early autumn. During this period, longer daylight hours and higher sun angles contribute to increased energy generation. However, the substantial decrease in output during autumn and winter highlights the challenges of relying solely on solar power throughout the year in this location.

Optimal Panel Tilt

For fixed solar panel installations in Popovo, Targovishte, the ideal tilt angle to maximize year-round energy production is 36 degrees facing south. This angle is calculated to optimize the panels' exposure to sunlight throughout the year, taking into account the Earth's elliptical orbit and the location's specific latitude.

Environmental and Weather Factors

While Popovo's location is generally favorable for solar energy production, there are some environmental and weather factors that could impact efficiency:

1. Snow accumulation in winter: The region experiences snowfall, which can cover panels and reduce output.
2. Dust and pollen: Agricultural activities in the area may lead to increased dust and pollen in the air, potentially affecting panel efficiency.

To mitigate these issues, regular panel cleaning and maintenance are essential. Installing panels at the optimal angle also helps with natural snow shedding. Additionally, considering snow-resistant panel designs and dust-repellent coatings can further enhance performance in challenging conditions.

In conclusion, while Popovo offers good potential for solar energy generation, especially during summer and spring, the significant seasonal variations necessitate careful planning and potentially supplementary energy sources for year-round reliability.

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 Popovo

Seasonal solar PV output for Latitude: 43.3484, Longitude: 26.2385 (Popovo, 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 Popovo, Bulgaria

To maximize your solar PV system's energy output in Popovo, Bulgaria (Lat/Long 43.3484, 26.2385) 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 Popovo, 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 Popovo, 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	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 Popovo, 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 Popovo, Bulgaria.

Our calculation method

1. Solar Position:
   We determine the Sun's position on the Winter solstice using the location's latitude and solar declination.
2. Shadow Projection:
   We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle.
3. 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 Popovo, Bulgaria

The topography around Popovo, Bulgaria, located at coordinates 43.3484°N, 26.2385°E, is characterized by a diverse landscape typical of the Danubian Plain region. The area features gently rolling hills interspersed with flat plains and shallow valleys. The terrain is generally low-lying, with elevations ranging from approximately 200 to 400 meters above sea level. To the north of Popovo, the land gradually slopes towards the Danube River, which forms the border between Bulgaria and Romania. This area is predominantly flat, with occasional gentle undulations. To the south and southeast, the terrain becomes slightly more varied, with low hills and small ridges punctuating the landscape. These hills are typically covered with a mix of grasslands and scattered forests. The region around Popovo is crisscrossed by several small rivers and streams, which have carved shallow valleys into the landscape over time. These waterways contribute to the area's agricultural potential, as the alluvial soils in the valleys are particularly fertile.

Suitability for Large-Scale Solar PV

When considering areas nearby that would be most suited to large-scale solar photovoltaic (PV) installations, several factors come into play. The ideal locations for solar PV projects in the vicinity of Popovo would be: The flat plains to the north and northeast of Popovo offer excellent potential for solar PV installations. These areas provide large, unobstructed spaces with minimal shading from natural features. The relatively level terrain would simplify construction and reduce costs associated with land preparation. Some of the gently sloping hillsides to the south and southeast of Popovo could also be suitable for solar PV projects. South-facing slopes, in particular, would receive optimal sunlight exposure throughout the day. However, care should be taken to avoid areas with significant tree cover or steep gradients. Agricultural lands that are less productive or have been left fallow could be repurposed for solar energy generation. These areas are often already cleared and have existing access roads, which can reduce development costs. It's important to note that while the topography around Popovo is generally favorable for solar PV installations, other factors such as proximity to power infrastructure, local zoning regulations, and environmental considerations would also need to be taken into account when selecting specific sites for large-scale solar projects.

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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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.