Dar El Salam, Cairo Governorate, Egypt presents a highly favorable location for year-round solar PV energy generation, positioned in the Northern Sub Tropics at coordinates 29.9935°N, 31.2547°E. This location demonstrates strong solar energy potential across all seasons, making it an excellent choice for solar installations.

Seasonal Solar Performance

The location shows impressive energy output throughout the year, with summer being the peak season at 8.79 kWh per day per kW of installed solar capacity. Spring follows as the second-best performing season at 7.95 kWh per day per kW, making these warm months ideal for maximum solar generation. Autumn performance drops to 5.87 kWh per day per kW, while winter shows the lowest output at 4.39 kWh per day per kW, though this is still a respectable level for solar production. The location benefits from consistent solar energy potential year-round, with even the lowest winter production representing about 50% of peak summer output. This reliability makes Dar El Salam suitable for both grid-tied and off-grid solar installations.

Optimal Panel Configuration

For fixed panel installations at this location, the ideal tilt angle to maximize total year-round solar production is 26 degrees facing South. This angle has been calculated using weighted daily solar elevation angles and NASA solar irradiance data to account for Earth's elliptical orbit and seasonal variations.

Environmental and Weather Considerations

Several local factors in this Egyptian location could potentially impact solar production and require careful consideration during installation:

• Desert dust and sand storms: The proximity to desert regions means frequent dust accumulation on panels and occasional sandstorms that can significantly reduce efficiency
• High temperatures: Extreme summer heat can reduce panel efficiency and stress electrical components
• Humidity from nearby water sources: Moisture can affect electrical connections and promote corrosion
• Salt air exposure: Depending on proximity to coastal areas, salt corrosion may be a concern

Preventative Measures for Optimal Performance

To maximize energy production despite these environmental challenges, several installation strategies should be implemented:

• Regular cleaning systems: Install automated cleaning systems or establish frequent manual cleaning schedules to remove dust and sand buildup
• Elevated mounting: Use mounting systems that provide adequate airflow underneath panels to reduce operating temperatures
• Quality sealing: Ensure all electrical connections are properly sealed against moisture and dust ingress
• Corrosion-resistant materials: Use marine-grade or specially treated mounting hardware and electrical components
• Monitoring systems: Install performance monitoring to quickly identify when cleaning or maintenance is needed

Despite these environmental considerations, Dar El Salam remains an excellent location for solar PV installations. With proper planning and maintenance protocols, the strong solar resource available throughout the year makes this location highly suitable for reliable solar energy generation.

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

Link: Solar PV potential in Egypt by location

Solar output per kW of installed solar PV by season in Dar El Salam

Seasonal solar PV output for Latitude: 29.9935, Longitude: 31.2547 (Dar El Salam, Egypt), 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 26° South in Dar El Salam, Egypt

To maximize your solar PV system's energy output in Dar El Salam, Egypt (Lat/Long 29.9935, 31.2547) throughout the year, you should tilt your panels at an angle of 26° 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 Dar El Salam, Egypt

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 Dar El Salam, Egypt. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 26° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
14° South in Summer	35° South in Autumn	45° South in Winter	23° 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 Dar El Salam, Egypt

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 Dar El Salam, Egypt.

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 Dar El Salam, Egypt

Topographical Features of Dar El Salam

The area around Dar El Salam in Egypt sits within the broader Cairo metropolitan region, positioned on relatively flat terrain that forms part of the Nile River valley system. This location lies on the eastern bank of the Nile, where the landscape is characterised by low-lying alluvial plains that have been shaped by millennia of river deposits. The immediate surroundings consist of gently undulating terrain with minimal elevation changes, making it part of the stable geological foundation that supports much of Greater Cairo's urban development. The topography here is dominated by sedimentary deposits from the Nile's historical flood patterns, creating a relatively uniform surface with gradual slopes toward the river. To the east, the land begins a gentle rise toward the Eastern Desert plateau, while westward the terrain remains flat as it approaches the Nile itself. This positioning places Dar El Salam in a transitional zone between the fertile river valley and the beginning of Egypt's desert regions.

Regional Landscape Context

Moving beyond the immediate vicinity, the broader regional topography reveals a landscape of contrasts. The Nile Valley creates a narrow green corridor through otherwise arid terrain, with the river serving as the dominant geographical feature that has shaped both natural and human settlement patterns. The valley floor remains consistently flat, interrupted only by occasional low ridges and ancient river terraces that mark previous flood levels. To the northeast and southeast of Dar El Salam, the landscape transitions into the Eastern Desert, where the terrain becomes increasingly rugged with rocky outcrops, wadis (dry riverbeds), and scattered hills. Westward across the Nile, the Western Desert begins, featuring vast expanses of relatively flat desert punctuated by occasional escarpments and depressions.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for extensive solar photovoltaic installations would be found in the desert areas surrounding the Nile Valley, particularly to the east and west of the current urban development. The Eastern Desert regions, located roughly 20 to 50 kilometres from Dar El Salam, offer ideal conditions with their flat to gently rolling terrain, minimal vegetation, and stable geological conditions. These desert areas provide several advantages for solar development. The terrain is largely uninhabited and not suitable for agriculture, eliminating competition for land use. The relatively flat topography minimises the need for extensive site preparation and grading, reducing construction costs and environmental impact. The stable desert floor, composed primarily of consolidated sand, gravel, and rock formations, provides excellent foundation conditions for large solar arrays. The Western Desert regions across the Nile also present excellent opportunities, though access considerations and proximity to existing electrical infrastructure may influence development decisions. These areas feature expansive flat plains with minimal topographical obstacles, allowing for the construction of very large solar facilities with optimal panel orientation and spacing. Areas closer to existing urban development, while potentially offering easier grid connection, are generally less suitable due to competing land uses, higher land values, and the flat but often developed or agricultural nature of the Nile Valley floor. The transitional zones between the valley and desert regions could serve as compromise locations, offering reasonable access while still providing adequate space and suitable terrain conditions for substantial solar installations.

Egypt solar PV Stats as a country

Egypt ranks 34th in the world for cumulative solar PV capacity, with 1,675 total MW's of solar PV installed. Each year Egypt is generating 17 Watts from solar PV per capita (Egypt ranks 67th in the world for solar PV Watts generated per capita). [source]

Are there incentives for businesses to install solar in Egypt?

Yes, there are incentives for businesses wanting to install solar energy in Egypt. The Egyptian government has implemented a number of policies and programs to encourage the adoption of renewable energy sources such as solar power. These include feed-in tariffs, net metering, tax exemptions, and subsidies. Additionally, the government has established a Renewable Energy Authority (REA) to oversee the development of renewable energy projects in Egypt.

Do you have more up to date information than this on incentives towards solar PV projects in Egypt? Please reach out to us and help us keep this information current. Thanks!

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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.