Parvomay, Plovdiv, Bulgaria, located at 42.0983° N, 25.2124° E, presents a mixed picture for solar energy generation throughout the year. This Northern Temperate Zone location experiences significant seasonal variations in solar energy production, which impacts the overall efficiency of photovoltaic (PV) systems.

Seasonal Solar Energy Production

The solar energy output in Parvomay varies considerably across the four meteorological seasons: - Summer: 6.96 kWh/day per kW installed - Spring: 5.11 kWh/day per kW installed - Autumn: 3.22 kWh/day per kW installed - Winter: 1.99 kWh/day per kW installed

These figures indicate that summer and spring are the most productive seasons for solar energy generation in Parvomay. During these months, longer daylight hours and higher sun angles contribute to increased solar panel efficiency. Conversely, autumn and winter see a significant drop in energy production due to shorter days and lower sun angles.

Optimal Panel Tilt

For fixed panel installations in Parvomay, Plovdiv, the ideal tilt angle to maximize year-round solar production is 36 degrees facing South. This angle helps optimize energy capture across all seasons, balancing the high summer sun with the lower winter sun position.

Environmental and Weather Factors

While Parvomay's location is generally favorable for solar energy production, there are some factors that could potentially impact efficiency:

1. Snow accumulation in winter: Parvomay experiences snowfall during winter months, which can cover solar panels and reduce energy production. To mitigate this, panels can be installed at a steeper angle to encourage snow sliding off, or snow removal systems can be implemented.

2. Dust and pollen: The region's agricultural activities may lead to increased dust and pollen in the air, which can accumulate on panels and reduce efficiency. Regular cleaning and maintenance of panels can help address this issue.

3. Cloud cover: While not extreme, Parvomay does experience cloudy days, particularly in autumn and winter. Using high-efficiency panels and incorporating energy storage solutions can help offset reduced production during overcast periods.

Overall, while Parvomay faces some challenges for year-round solar energy production, particularly in winter, the location remains viable for solar PV installations with proper planning and maintenance.

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 Parvomay

Seasonal solar PV output for Latitude: 42.0983, Longitude: 25.2124 (Parvomay, 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 Parvomay, Bulgaria

To maximize your solar PV system's energy output in Parvomay, Bulgaria (Lat/Long 42.0983, 25.2124) 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 Parvomay, 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 Parvomay, 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
26° South in Summer	46° South in Autumn	56° South in Winter	34° 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 Parvomay, 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 Parvomay, 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 Parvomay, Bulgaria

The area surrounding Parvomay, Bulgaria, located at coordinates 42.0983°N, 25.2124°E, is characterized by a diverse and picturesque topography. This region is part of the Upper Thracian Plain, which is known for its gently rolling hills, fertile lowlands, and river valleys. To the north of Parvomay, the terrain gradually rises towards the foothills of the Balkan Mountains, creating a series of undulating hills and plateaus. These elevated areas offer panoramic views of the surrounding countryside and are often dotted with small forests and agricultural plots. South of the town, the landscape becomes flatter, transitioning into the heart of the Upper Thracian Plain. This area is predominantly composed of expansive, level fields that stretch for miles, interrupted occasionally by small streams and irrigation channels. The fertile soil in this region has made it an important agricultural center for centuries. To the east and west, the topography alternates between gentle slopes and flat areas, creating a patchwork of farmland, meadows, and scattered woodlands. The Maritsa River, one of Bulgaria's major waterways, flows to the south of Parvomay, carving a wide valley through the plain and influencing the local geography.

Suitability for Large-Scale Solar PV

When considering areas near Parvomay for large-scale solar photovoltaic (PV) installations, the flat and gently sloping regions of the Upper Thracian Plain to the south and southeast of the town present the most promising opportunities. These areas offer several advantages for solar energy production: Firstly, the relatively flat terrain in these locations provides ample space for the installation of large solar arrays without the need for significant land preparation or terracing. This can help reduce construction costs and environmental impact. Secondly, the open nature of the plain means there are fewer natural obstacles that could cast shadows on solar panels, maximizing their exposure to sunlight throughout the day. The lack of tall vegetation or geographical features also minimizes the risk of shading, which can significantly impact the efficiency of solar installations. Additionally, the agricultural heritage of the region means that there are likely to be existing access roads and infrastructure that could be utilized or expanded to support a solar farm, potentially reducing development costs. It's worth noting that while the hilly areas to the north may receive good sun exposure, their more complex topography could make large-scale installations more challenging and expensive to develop. However, these elevated areas might be suitable for smaller, distributed solar projects. Before any development, thorough environmental and grid connection assessments would be necessary to ensure the chosen site is both ecologically appropriate and practically feasible for a large-scale solar PV installation.

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

Tell Us About Your Work

We love seeing how our research helps others! If you've cited this article in your work, we'd be delighted to hear about it. Drop us a line via our Contact Us page or on X, to share where you've used our information - we may feature a link to your work on our site. This helps create a network of valuable resources for others in the solar energy community and helps us understand how our research is contributing to the field. Plus, we occasionally highlight exceptional works that reference our research on our social media channels.

Feeling generous?

Share this with your friends!

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.