Guemar, El Oued, Algeria presents an excellent location for year-round solar PV energy generation, situated in the Northern Sub Tropics at coordinates 33.4792, 6.8114. This location demonstrates strong solar energy potential across all seasons, making it highly suitable for solar installations.
Seasonal Solar Performance
The solar energy output at Guemar shows impressive consistency throughout the year. Summer delivers the highest performance at 7.98kWh per day per kW of installed solar capacity, while spring follows closely with 7.03kWh per day per kW. Even during the lower-production seasons, autumn generates 5.17kWh per day per kW, and winter still produces a respectable 4.08kWh per day per kW. The ideal times for solar generation at this location are clearly summer and spring, when output can reach nearly 8kWh per day per kW of installed capacity. However, the location maintains good productivity even during autumn and winter months, ensuring reliable energy generation year-round.Optimal Panel Configuration
For maximum year-round solar production at Guemar, El Oued, fixed solar panels should be tilted at 30 degrees facing south. This angle has been calculated to optimize total annual energy output by accounting for the sun's changing position throughout the year and local solar irradiance patterns.Environmental and Weather Challenges
Several local factors could potentially impact solar production at this Algerian location, though the overall conditions remain favorable for solar energy generation. Sand and Dust Accumulation: Being located in North Africa, Guemar experiences frequent sandstorms and dust events that can significantly reduce solar panel efficiency. Dust accumulation on panels can decrease output by 15-30% if left uncleaned. Regular cleaning schedules, ideally weekly during dusty seasons, are essential. Installing automated cleaning systems or easy-access panel mounting can help maintain optimal performance. Extreme Heat: While abundant sunshine is beneficial, excessive heat can actually reduce solar panel efficiency. High ambient temperatures cause panels to operate less efficiently than their rated capacity. Ensuring proper ventilation around panels and using mounting systems that allow air circulation underneath can help mitigate this effect. Occasional Rainfall Patterns: Though generally arid, the region can experience intense but brief rainfall periods. While rain can help clean panels naturally, proper drainage and secure mounting systems are important to handle sudden weather changes.Preventative Installation Measures
To maximize energy production at this location, several installation strategies prove beneficial:- Install panels with adequate spacing for air circulation to reduce heat buildup
- Use anti-soiling coatings on panels to reduce dust adhesion
- Design easy-access mounting systems for regular maintenance and cleaning
- Consider automated cleaning systems for large installations
- Ensure robust mounting to withstand occasional strong winds
Note: The Northern Sub Tropics extend from 23.5° latitude North up to 35° latitude.
So far, we have conducted calculations to evaluate the solar photovoltaic (PV) potential in 52 locations across Algeria. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Algeria by location
Solar output per kW of installed solar PV by season in Guemar
Seasonal solar PV output for Latitude: 33.4792, Longitude: 6.8114 (Guemar, Algeria), 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 30° South in Guemar, Algeria
To maximize your solar PV system's energy output in Guemar, Algeria (Lat/Long 33.4792, 6.8114) throughout the year, you should tilt your panels at an angle of 30° 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 Guemar, Algeria
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 Guemar, Algeria. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 30° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 18° South in Summer | 38° South in Autumn | 49° South in Winter | 26° 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 Guemar, Algeria
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 Guemar, Algeria.
Our calculation method
- Solar Position:
We determine the Sun's position on the Winter solstice using the location's latitude and solar declination. - Shadow Projection:
We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle. - 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 Guemar, Algeria
Topographical Overview of the Guemar Region
The area surrounding Guemar in Algeria sits within the northern reaches of the Sahara Desert, characterized by predominantly flat to gently undulating terrain. This region forms part of the vast Ouargla Basin, where the landscape consists primarily of sandy plains interspersed with occasional low-lying depressions and salt flats known locally as chotts or sebkhas. The elevation remains relatively consistent across the area, with minimal topographical variation that would create significant shadows or drainage challenges. The terrain around Guemar features expansive stretches of consolidated sand and gravel surfaces, punctuated by scattered rocky outcrops and occasional small hills that rise modestly above the surrounding plains. These geological formations are remnants of ancient sedimentary deposits that have been shaped by millennia of wind erosion and weathering processes typical of arid environments.Drainage Patterns and Surface Conditions
Water features in this region are sparse and predominantly seasonal. The landscape includes several dry riverbeds called wadis that occasionally carry water during rare precipitation events. These drainage channels create natural corridors through the otherwise uniform terrain, though they remain dry for most of the year. The surface composition varies between areas of fine sand, packed earth, and regions with scattered stone and gravel deposits. Salt flats and playas dot the landscape, representing areas where ancient lakes once existed. These features create naturally level surfaces with hard-packed substrates that can extend for considerable distances. The soil composition throughout the region tends toward sandy and saline characteristics, with minimal organic content due to the arid climate conditions.Optimal Areas for Large-Scale Solar Development
The most suitable locations for extensive solar photovoltaic installations lie on the elevated plateaus and gently sloping plains that dominate the landscape around Guemar. These areas offer the dual advantages of stable ground conditions and minimal risk of seasonal flooding from the occasional wadi flows. The consolidated sand and gravel surfaces provide excellent foundations for solar mounting systems while maintaining good drainage characteristics. Particularly promising are the broad, flat expanses located on slightly elevated terrain between the major drainage channels. These zones combine accessibility with stable geological conditions and present fewer environmental sensitivities compared to areas closer to seasonal water features. The hard-packed surfaces found in these locations reduce the need for extensive ground preparation and provide natural resistance to wind erosion. Areas with gentle southward-facing slopes offer additional advantages for solar installations, as they can be oriented to maximize exposure throughout the day while maintaining efficient drainage. The rocky outcrops and more elevated terrain features, while less extensive, provide alternative sites that offer excellent stability and minimal dust accumulation issues. The salt flat regions, despite their level surfaces, present mixed opportunities for solar development. While they offer vast open spaces with minimal topographical obstacles, the high salinity levels can create corrosion challenges for equipment and infrastructure. However, the edges of these formations often provide suitable compromise locations that combine accessibility with more moderate soil conditions.Algeria solar PV Stats as a country
Algeria ranks 53rd in the world for cumulative solar PV capacity, with 448 total MW's of solar PV installed. Each year Algeria is generating 10 Watts from solar PV per capita (Algeria ranks 73rd in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Algeria?
Yes, there are incentives for businesses wanting to install solar energy in Algeria. The Algerian government has implemented a number of policies and programs to encourage the development of renewable energy sources, including solar energy. These include tax exemptions, subsidies, and other financial incentives for businesses that invest in renewable energy projects. Additionally, the government has established a Renewable Energy Development Fund (REDF) which provides grants and loans to support renewable energy projects.
Do you have more up to date information than this on incentives towards solar PV projects in Algeria? Please reach out to us and help us keep this information current. Thanks!
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Wednesday 6th of August 2025
Last Updated: Friday 8th of August 2025
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.




