Mamarchevo, Yambol, Bulgaria, located at 42.1187017° N, 26.779646° E, offers varying potential for solar energy generation throughout the year. This location in the Northern Temperate Zone experiences significant seasonal fluctuations in solar output, which impacts the effectiveness of photovoltaic (PV) systems.

Seasonal Solar Performance

Solar energy production at this site peaks during the summer months, with an impressive 6.99 kWh per day for each kilowatt of installed capacity. Spring follows as the second-most productive season, yielding 5.18 kWh/day/kW. However, autumn sees a substantial drop to 3.15 kWh/day/kW, while winter performance dips to a mere 1.96 kWh/day/kW.

These figures highlight the stark contrast between summer and winter production, with summer generating more than three times the energy of winter days. This variation underscores the importance of efficient energy storage solutions to balance supply throughout the year.

Optimal Panel Positioning

To maximize year-round solar energy production in Mamarchevo, Yambol, fixed solar panels should be tilted at a 35-degree angle facing south. This optimal angle takes into account the site's latitude, seasonal sun paths, and local solar irradiance data, ensuring the best possible energy capture across all seasons.

Environmental Considerations

While Mamarchevo's location is generally favorable for solar energy production, there are some environmental factors to consider:

• Snow accumulation in winter can significantly reduce panel efficiency
• Dust and pollen during dry periods may coat panels, decreasing their effectiveness

To mitigate these issues, consider installing panels at a steeper angle to promote snow sliding off and implement regular cleaning schedules. Additionally, investing in snow-shedding systems and anti-soiling coatings can help maintain optimal performance year-round.

In conclusion, while Mamarchevo experiences substantial seasonal variations in solar output, proper panel positioning and maintenance can help maximize energy production. The location is particularly well-suited for solar generation from late spring through early autumn, making it a viable option for supplementing energy needs, especially when combined with efficient storage solutions to balance the lower winter output.

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 Mamarchevo

Seasonal solar PV output for Latitude: 42.1187017, Longitude: 26.779646 (Mamarchevo, 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 35° South in Mamarchevo, Bulgaria

To maximize your solar PV system's energy output in Mamarchevo, Bulgaria (Lat/Long 42.1187017, 26.779646) throughout the year, you should tilt your panels at an angle of 35° 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 Mamarchevo, 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 Mamarchevo, Bulgaria. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 35° 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 Mamarchevo, 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 Mamarchevo, 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 Mamarchevo, Bulgaria

The landscape around Mamarchevo, Bulgaria, is characterized by a diverse topography that reflects the region's location in the eastern part of the country. Situated in the Haskovo Province, Mamarchevo is nestled within a transitional area between the Thracian Plain and the foothills of the Eastern Rhodope Mountains. The terrain in this area is generally hilly, with gentle to moderate slopes dominating the landscape. To the north and east of Mamarchevo, the land gradually flattens out as it merges with the Thracian Plain, offering expansive views of agricultural fields and scattered woodlands. The southern and western parts of the region become increasingly undulating, with more pronounced hills and valleys as one approaches the Rhodope Mountains. Several small rivers and streams crisscross the area, carving shallow valleys and creating a network of natural drainage systems. These waterways contribute to the region's agricultural potential and add to the scenic beauty of the landscape.

Potential for Large-scale Solar PV

When considering areas nearby that would be most suited for large-scale solar photovoltaic (PV) installations, several factors come into play. The ideal locations for solar farms in this region would be: The flatter areas to the north and east of Mamarchevo, extending towards the Thracian Plain, offer the most promising potential for large-scale solar PV projects. These areas benefit from relatively level terrain, which simplifies construction and maintenance of solar arrays. The open nature of the landscape also means there are fewer obstacles to block sunlight, maximizing energy generation potential. South-facing slopes on the gentler hills surrounding Mamarchevo could also be suitable for solar installations. These locations can take advantage of optimal sun exposure throughout the day, potentially increasing the efficiency of solar panels. Areas of marginal agricultural land or former industrial sites near Mamarchevo might be repurposed for solar farms. This approach would make use of land that may not be suitable for other productive purposes while contributing to renewable energy generation. It's important to note that while the topography around Mamarchevo offers good potential for solar PV development, other factors such as grid connectivity, local regulations, and environmental considerations would need to be carefully evaluated before implementing any large-scale solar projects in the region.

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.