Kelibia, Nabeul Governorate, Tunisia presents a moderately favorable location for year-round solar photovoltaic energy generation, though with notable seasonal variations that potential installers should carefully consider.

Seasonal Solar Performance

The solar energy output at this coastal Tunisian location shows significant seasonal fluctuation. Summer months deliver the strongest performance at 7.70kWh per day per kW of installed capacity, making this the prime solar generation period. Spring follows as the second-best season with 6.15kWh daily output per kW, offering excellent energy production during the March through May period. Autumn brings a noticeable decline to 4.08kWh per day per kW, while winter represents the most challenging period with only 3.07kWh daily per kW. This winter output is less than half of the summer peak, indicating that backup energy sources or battery storage systems may be necessary for consistent year-round power supply.

Optimal Installation Configuration

For maximum year-round energy production at Kelibia, Nabeul Governorate, solar panels should be installed at a fixed tilt angle of 32 degrees facing south. This angle has been calculated to optimize total annual solar collection by accounting for the sun's varying elevation throughout the year and weighting these angles based on actual solar irradiance data.

Environmental and Weather Challenges

Several local factors in Kelibia can potentially impact solar panel performance and require attention during installation planning. The Mediterranean coastal location exposes solar installations to salt air and marine humidity, which can accelerate corrosion of metal components and degrade electrical connections over time. Regular cleaning and maintenance schedules become essential, with installers recommended to use marine-grade wiring, corrosion-resistant mounting hardware, and protective coatings on all metal surfaces. Dust accumulation represents another significant concern in this North African location. Sand and dust particles can settle on panel surfaces, creating a film that reduces light transmission and decreases energy output. The combination of occasional desert winds from the south and limited rainfall during certain periods can exacerbate this issue. Seasonal wind patterns, particularly during autumn and winter storms coming off the Mediterranean, can create additional challenges. Strong winds may stress mounting systems and potentially damage panels if installations are not properly engineered for local wind loads.

Preventative Installation Measures

To maximize energy production despite these environmental challenges, several preventative measures should be implemented:

• Install automated cleaning systems or schedule regular manual cleaning to remove dust and salt deposits
• Use anti-reflective coatings designed to resist dust adhesion and make cleaning more effective
• Select mounting systems rated for coastal wind loads and potential storm conditions
• Apply protective sealants to all electrical connections and use weatherproof junction boxes
• Position installations to allow adequate airflow underneath panels for cooling and moisture prevention

The location's moderate solar potential, combined with proper installation techniques addressing local environmental factors, can still provide reliable renewable energy generation throughout most of the year, with summer and spring months offering particularly strong performance.

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 Kelibia

Seasonal solar PV output for Latitude: 36.8451, Longitude: 11.0925 (Kelibia, 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 Kelibia, Tunisia

To maximize your solar PV system's energy output in Kelibia, Tunisia (Lat/Long 36.8451, 11.0925) 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 Kelibia, 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 Kelibia, 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 Kelibia, 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 Kelibia, 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 Kelibia, Tunisia

Topographical Features of Kelibia

Kelibia sits on the northeastern tip of Tunisia's Cap Bon Peninsula, where the Mediterranean Sea meets a landscape of gentle hills and coastal plains. The town itself occupies elevated ground overlooking the sea, with the famous Kelibia Fort perched on a rocky promontory that rises approximately 150 meters above sea level. This strategic position provides commanding views across the surrounding terrain and out to the Mediterranean waters. The immediate area around Kelibia features a mix of undulating hills and relatively flat coastal plains. The terrain slopes gradually from the higher inland areas down toward the shoreline, creating natural drainage patterns that flow toward the sea. The landscape is characterized by limestone formations typical of the Cap Bon region, with occasional rocky outcrops and escarpments that break up the otherwise gentle topography. Moving inland from Kelibia, the terrain becomes more varied with rolling hills and small valleys. The elevation changes are generally modest, creating a landscape that undulates rather than rises dramatically. Agricultural terraces and cultivated fields occupy much of this area, taking advantage of the fertile soils and favorable growing conditions that the region provides.

Optimal Areas for Large-Scale Solar Development

The most promising locations for extensive solar photovoltaic installations lie to the southwest and west of Kelibia, where the landscape opens up into broader, flatter expanses. These areas offer the combination of relatively level ground and sufficient space that large-scale solar projects require for optimal efficiency and cost-effectiveness. The coastal plains extending westward from Kelibia present particularly attractive opportunities for solar development. These areas feature gentle slopes and minimal topographical obstacles, reducing the complexity and cost of site preparation and installation. The terrain in these locations typically requires less grading and earthwork compared to the more undulating areas closer to the town center. Inland areas approximately 10 to 15 kilometers southwest of Kelibia offer additional potential for solar installations. Here, the landscape consists of broad, gently rolling plains with good accessibility via existing road networks. The terrain in these locations provides natural drainage while maintaining the relatively flat characteristics that make solar panel installation and maintenance more straightforward. The agricultural areas surrounding Kelibia, while currently in productive use, represent long-term potential for solar development, particularly where the land is less intensively cultivated. These areas benefit from existing infrastructure connections and generally favorable topographical conditions, though any development would need to consider the current agricultural value and local land use priorities. Areas closer to the immediate coastline, while topographically suitable in some locations, may face greater exposure to salt-laden coastal winds and potential environmental sensitivities that could complicate large-scale solar development. The optimal zones tend to be those that balance favorable terrain characteristics with practical considerations such as grid connectivity and environmental impact.

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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.