Bahir Dar, Amhara, Ethiopia, is a great location for generating energy via solar panels all year round. This is because it's located in the Tropics where sunlight is consistent throughout most of the year. The amount of electricity that can be expected from each kilowatt (kW) of installed solar varies by season: you get about 5.63 kWh/day in summer, 6.46 kWh/day in autumn, 6.88 kWh/day in winter and the highest output at 7.23 kWh/day in spring.

So while you can generate solar energy throughout the year here, spring would be the ideal time as that's when you'd get maximum output from your solar panels.

For fixed panel installations at this location, tilting panels at an angle of 12 degrees South will help maximize total yearly production from your solar setup.

As far as environmental or weather factors are concerned that could potentially affect solar production at this location - there aren't any significant ones to worry about given Bahir Dar's geographic location and climate characteristics; it has more dry seasons than wet which favors sunlight exposure for PV systems.

However, during wet seasons or times with heavy cloud cover or dust storms (if they occur), these might temporarily reduce sunlight availability and hence lower power generation capacity during those periods but such instances should not significantly affect annual energy yield due to mostly sunny conditions prevalent here most part of the year.

To ensure greater energy production despite these minor challenges if they occur: regular cleaning and maintenance of panels will help keep them efficient especially after dust storms; also consider installing tracking systems on your PV system which allow panels to move following sun’s path across sky thereby maximizing exposure even under less ideal conditions like cloudy days or changing seasonal sun angles.

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 Bahir Dar

Seasonal solar PV output for Latitude: 11.6032, Longitude: 37.3858 (Bahir Dar, 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:

Average 5.63kWh/day in Summer.

Average 6.46kWh/day in Autumn.

Average 6.88kWh/day in Winter.

Average 7.23kWh/day in Spring.

Ideally tilt fixed solar panels 12° South in Bahir Dar, Ethiopia

To maximize your solar PV system's energy output in Bahir Dar, Ethiopia (Lat/Long 11.6032, 37.3858) throughout the year, you should tilt your panels at an angle of 12° 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.

At Latitude: 11.6032, Longitude: 37.3858, the ideal angle to tilt panels is 12° South

Seasonally adjusted solar panel tilt angles for Bahir Dar, 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 Bahir Dar, Ethiopia. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 12° South tilt angle throughout the year.

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 Bahir Dar, 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 Bahir Dar, 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 Bahir Dar, Ethiopia

Bahir Dar, Ethiopia is situated in the northwestern part of the country near Lake Tana, the largest lake in Ethiopia. The city is located at an elevation of around 1,800 meters (5,900 feet) above sea level. The topography surrounding Bahir Dar generally features flat to gently undulating plains with some hilly and mountainous areas further away.

The region has a sub-tropical climate with two main seasons: a dry season from October to February and a rainy season from June to September. The area receives ample sunlight throughout most of the year making it suitable for solar PV installations.

For large-scale solar PV projects, flat or gently sloping areas would be most suitable as they facilitate installation and maintenance while maximizing exposure to sunlight. Areas that are not heavily forested would also be ideal as this reduces shading on the panels.

In terms of specific locations near Bahir Dar for large-scale solar PV projects:

1) Plains Near Lake Tana: These relatively flat areas offer good potential for large scale solar installations given their exposure to sunlight and proximity to water which could potentially be used for panel cleaning purposes.

2) Eastern Outskirts: East of Bahir Dar there appears to be less densely populated land which could provide ample space for a larger scale project.

However, any decision on exact locations should take into account other factors such as land use patterns (agricultural activities), local regulations regarding land use change, proximity to power grids or infrastructure needed for power transmission/distribution etc.

Finally, please note that detailed site assessments including ground-based measurements would still need to be performed before selecting any specific location(s).

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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.

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