Medjez el Bab, Tunisia represents a moderately good location for year-round solar photovoltaic energy generation, though with significant seasonal variation in output. Located in the Northern Temperate Zone at coordinates 36.6472°N, 9.6086°E, this area experiences typical Mediterranean climate patterns that directly impact solar energy production throughout the year.

Seasonal Solar Performance

The location shows strong seasonal differences in solar energy output. Summer provides the highest production at 7.74 kWh per day per kW of installed capacity, making it the ideal time for solar generation. Spring follows as the second-best season with 6.10 kWh per day per kW, offering good production levels as daylight hours increase and sun angles improve. Autumn sees a notable drop to 4.15 kWh per day per kW as conditions become less favorable. Winter presents the most challenging period with only 3.13 kWh per day per kW, representing less than half of summer production levels. This seasonal variation is typical for Mediterranean locations but still allows for meaningful year-round energy generation. For fixed panel installations at this location, the ideal tilt angle to maximize total year-round production is 32 degrees facing south. This angle is calculated by analyzing daily solar elevation angles throughout the year and weighting them according to solar irradiance potential, accounting for Earth's elliptical orbit around the sun.

Environmental and Weather Challenges

Several local factors could potentially impact solar production efficiency at Medjez el Bab:

• Dust and sand accumulation from North African desert winds, particularly during spring and summer months
• Occasional heavy rainfall during winter months that could cause temporary shading from cloud cover
• High summer temperatures that can reduce panel efficiency despite increased sunlight
• Potential for morning fog or haze, especially during transitional seasons

Preventative Measures for Optimal Performance

To maximize energy production and minimize the impact of local environmental factors, several installation strategies should be considered: Regular cleaning schedules are essential, particularly during dusty periods. Installing panels with adequate spacing allows for proper air circulation, helping to reduce heat buildup that can decrease efficiency during hot summer months. Choosing panels with good high-temperature performance characteristics is also important for this climate. Proper drainage design prevents water pooling during rainy periods, while selecting mounting systems that allow for easy maintenance access ensures panels can be kept clean and functioning optimally. Anti-soiling coatings on panels can help reduce dust adhesion, though regular maintenance remains necessary. The location's moderate solar potential, combined with proper installation techniques and maintenance practices, makes Medjez el Bab a viable option for solar energy generation, particularly when systems are designed to account for the seasonal variation and local environmental conditions.

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 53 locations across Tunisia. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Tunisia by location

Solar output per kW of installed solar PV by season in Medjez El Bab

Seasonal solar PV output for Latitude: 36.6472, Longitude: 9.6086 (Medjez El Bab, Tunisia), 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 32° South in Medjez El Bab, Tunisia

To maximize your solar PV system's energy output in Medjez El Bab, Tunisia (Lat/Long 36.6472, 9.6086) throughout the year, you should tilt your panels at an angle of 32° 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 Medjez El Bab, Tunisia

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 Medjez El Bab, Tunisia. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 32° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
21° South in Summer	41° South in Autumn	51° South in Winter	29° 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 Medjez El Bab, Tunisia

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 Medjez El Bab, Tunisia.

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 Medjez El Bab, Tunisia

Topographical Features of Medjez el Bab

Medjez el Bab sits in the northern region of Tunisia, positioned within the Medjerda River valley system. The town is located at a strategic crossing point where the Medjerda River cuts through the surrounding landscape, creating a natural corridor between higher elevations. The immediate area features gently rolling hills and undulating terrain typical of the Tell Atlas foothills region.

The landscape around Medjez el Bab is characterized by moderate elevation changes, with the town itself positioned at approximately 100 meters above sea level. To the north and south, the terrain gradually rises into low hills and ridgelines that form part of the broader Atlas Mountain system's northern extensions. These hills create a series of valleys and plateaus that drain into the Medjerda River system.

The river valley itself has carved relatively flat alluvial plains on either side of the watercourse, creating fertile agricultural land that has been cultivated for centuries. Beyond these floodplains, the topography transitions into more varied terrain with gentle slopes and occasional steeper inclines toward the surrounding highland areas.

Soil and Surface Conditions

The geological foundation of the region consists primarily of sedimentary rocks, including limestone, sandstone, and clay deposits that have been shaped by millennia of erosion and weathering. Near the river valley, alluvial soils predominate, while the higher elevations feature more rocky outcrops and thinner soil layers over bedrock.

Surface conditions vary considerably across the landscape. The valley floors tend to have deeper, more fertile soils that support intensive agriculture, while the hillsides and plateaus often display rockier terrain with scattered vegetation. Seasonal water flow patterns have created numerous small wadis and drainage channels that crisscross the landscape, particularly during the winter rainy season.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations would be found on the elevated plateaus and gentle slopes that surround the immediate river valley. These areas offer several advantages including relatively flat or gently sloping terrain that minimizes grading requirements and construction costs. The higher elevations also provide better drainage and reduced risk of seasonal flooding compared to the lower valley areas.

Particularly promising locations would be the broad, open plateaus that extend to the southwest and northeast of Medjez el Bab. These areas feature stable geological conditions with minimal slope variation, making them ideal for large solar arrays. The terrain in these zones is generally above the agricultural floodplains but below the steeper hillsides, providing an optimal balance of accessibility and suitable topography.

The ridgelines and elevated areas approximately 5-15 kilometers from the town center would offer excellent potential for solar development. These locations benefit from minimal shading from surrounding topography and have sufficient space for extensive solar installations. The relatively sparse vegetation and limited agricultural use in many of these higher elevation areas would also reduce land use conflicts.

Areas to avoid for solar development would include the immediate river valley due to flood risk, the steeper hillsides that would require extensive grading, and the more densely vegetated or agriculturally productive zones. The optimal sites combine gentle topography, stable soils, good drainage, minimal vegetation clearing requirements, and reasonable proximity to existing infrastructure for grid connection and maintenance access.

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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.