The location of Waliso, Oromiya, Ethiopia, situated at 8.5342°N latitude and 37.9652°E longitude, presents a favorable environment for solar PV energy generation throughout the year. This tropical location benefits from consistent sunlight, with seasons primarily characterized by wet and dry periods rather than significant temperature variations.

Seasonal Solar Production

Solar energy production in Waliso demonstrates impressive consistency across all seasons, with slight variations that favor the drier months. Spring and winter show the highest daily electricity output, with 6.93 kWh and 6.86 kWh per kW of installed solar capacity, respectively. Autumn follows closely with 6.33 kWh/day, while summer, which coincides with the rainy season, still maintains a respectable 5.17 kWh/day.

The most ideal times for solar generation in Waliso are during the dry season, typically from October to February. This period aligns with the autumn and winter months, which show higher daily outputs. However, the relatively small variation between seasons suggests that solar PV systems can operate efficiently year-round in this location.

Optimal Panel Tilt

For fixed panel installations in Waliso, Oromiya, the ideal tilt angle to maximize year-round solar production is 9 degrees facing South. This slight tilt helps optimize the panels' exposure to sunlight throughout the year, considering the location's proximity to the equator and the sun's path across the sky.

Environmental Considerations

While Waliso's location is generally favorable for solar energy production, there are a few environmental factors to consider:

• Rainfall: The rainy season, typically from June to September, may slightly reduce solar output due to increased cloud cover.
• Dust and particulate matter: Ethiopia's dry seasons can lead to increased airborne dust, potentially affecting panel efficiency.

To mitigate these factors, regular cleaning and maintenance of solar panels is crucial. Installing panels at the recommended tilt angle can also help with natural cleaning during rainfall. Additionally, using high-quality, dust-resistant panels and implementing a robust cleaning schedule during the dry season can help maintain optimal energy production.

Overall, Waliso's location presents an excellent opportunity for consistent and efficient solar energy generation throughout the year, with only minor challenges that can be effectively managed through proper installation and maintenance practices.

Note: The Tropics are located between 23.5° North and -23.5° South of the equator.

So far, we have conducted calculations to evaluate the solar photovoltaic (PV) potential in 24 locations across Ethiopia. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Ethiopia by location

Solar output per kW of installed solar PV by season in Waliso

Seasonal solar PV output for Latitude: 8.5342, Longitude: 37.9652 (Waliso, Ethiopia), 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 9° South in Waliso, Ethiopia

To maximize your solar PV system's energy output in Waliso, Ethiopia (Lat/Long 8.5342, 37.9652) throughout the year, you should tilt your panels at an angle of 9° 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 Waliso, Ethiopia

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 Waliso, Ethiopia. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 9° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
8° North in Summer	15° South in Autumn	24° South in Winter	2° 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 Waliso, Ethiopia

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 Waliso, Ethiopia.

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 Waliso, Ethiopia

The area surrounding Waliso, Ethiopia, located at approximately 8.5342°N latitude and 37.9652°E longitude, is characterized by diverse and varied topography. This region is part of the Ethiopian Highlands, a vast mountainous area that dominates much of the country's landscape. Waliso itself is situated at an elevation of around 2,000 meters (6,560 feet) above sea level. The surrounding terrain is generally hilly and undulating, with numerous valleys and ridges creating a complex topographical pattern. The land gradually rises towards the west and northwest, where higher mountains and peaks can be found. To the east and southeast of Waliso, the landscape becomes slightly less rugged, with more gently rolling hills and broader valleys. This area is part of the Oromia Region, known for its fertile soils and agricultural productivity. Small streams and rivers crisscross the region, carving out narrow valleys and contributing to the overall topographical diversity.

Potential for Large-Scale Solar PV

When considering areas near Waliso that might be suitable for large-scale solar photovoltaic (PV) installations, several factors come into play. The ideal locations would combine favorable topography with high solar irradiance and minimal environmental or social conflicts. The areas to the east and southeast of Waliso show promise for solar PV development. These regions have gentler slopes and more open terrain, which could facilitate the construction and maintenance of large solar arrays. The slightly lower elevations in this direction also mean fewer obstacles to sunlight, potentially increasing the efficiency of solar panels. Another promising area lies to the south of Waliso, where the landscape opens up into broader plateaus. These relatively flat areas could provide ample space for extensive solar installations while minimizing the need for significant land reshaping or terracing. It's important to note that while the mountainous areas to the west and northwest receive abundant sunlight due to their elevation, the rugged terrain and steeper slopes make these locations less practical for large-scale solar projects. The costs and environmental impact of preparing such sites would likely outweigh the benefits of the increased solar exposure. Any large-scale solar PV project in the region would need to carefully consider land use patterns, as much of the area around Waliso is used for agriculture. Ideal locations would be those that can balance the need for solar energy production with the preservation of essential agricultural lands and natural habitats. In conclusion, while the varied topography around Waliso presents some challenges for large-scale solar PV development, there are several promising areas, particularly to the east, southeast, and south, where the combination of suitable terrain and good solar exposure could support significant renewable energy projects.

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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.