Mbeya, Tanzania, located at latitude -8.8947 and longitude 33.4466, presents a favorable environment for solar 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 Performance

The solar energy output in Mbeya demonstrates remarkable consistency across all seasons. Spring stands out as the most productive period, with an impressive 7.46 kWh per day for each kilowatt of installed solar capacity. Winter and autumn follow closely, generating 6.62 kWh/day and 6.45 kWh/day, respectively. Even during summer, which shows the lowest output, the system still produces a substantial 6.10 kWh/day. This minimal seasonal variation is a significant advantage for solar energy production in Mbeya. It ensures a reliable and steady power supply throughout the year, reducing the need for supplementary energy sources during less productive periods.

Optimal Panel Positioning

For fixed solar panel installations in Mbeya, the ideal tilt angle to maximize year-round energy production is 9 degrees facing North. This slight tilt helps optimize the panels' exposure to sunlight throughout the year, accounting for the location's proximity to the equator and the Earth's elliptical orbit.

Environmental Considerations

While Mbeya's location is generally favorable for solar energy production, there are a few environmental factors to consider: 1. Rainfall: Mbeya experiences a rainy season, typically from November to April. Heavy cloud cover during this period may temporarily reduce solar output. 2. Dust accumulation: The region's dry seasons can lead to increased dust in the air, which may settle on solar panels and reduce their efficiency. To mitigate these factors, consider the following preventative measures:

• Install a reliable cleaning system or schedule regular manual cleaning to remove dust and debris from the panels.
• Use high-quality, weather-resistant solar panels that can withstand occasional heavy rainfall.
• Implement a slight tilt in panel installation to facilitate natural cleaning by rainwater.

In conclusion, Mbeya's location offers excellent potential for year-round solar energy production. With proper installation and maintenance, a solar PV system in this area can provide a consistent and reliable source of clean energy throughout the year.

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

Link: Solar PV potential in Tanzania by location

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

Seasonal solar PV output for Latitude: -8.8947, Longitude: 33.4466 (Mbeya, Tanzania), 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° North in Mbeya, Tanzania

To maximize your solar PV system's energy output in Mbeya, Tanzania (Lat/Long -8.8947, 33.4466) throughout the year, you should tilt your panels at an angle of 9° North 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 Mbeya, Tanzania

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

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
7° South in Summer	16° North in Autumn	25° North in Winter	3° North 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 Mbeya, Tanzania

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 Mbeya, Tanzania.

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 Mbeya, Tanzania

The topography around Mbeya, Tanzania is characterized by diverse and dramatic landscapes. Mbeya is situated in the southwestern part of the country, nestled within the Southern Highlands region. The city itself lies at an elevation of approximately 1,700 meters (5,577 feet) above sea level, providing it with a cooler climate compared to many other parts of Tanzania.

The area surrounding Mbeya features a mix of rolling hills, plateaus, and mountains. To the north and east of the city, the terrain gradually rises towards the Mbeya Range, a series of mountains that form part of the Eastern Arc Mountain chain. These mountains reach heights of over 2,800 meters (9,186 feet), creating a stunning backdrop to the city.

To the south and west of Mbeya, the landscape becomes more varied, with a combination of gently sloping hills and flat plains. This area is part of the Rift Valley system, which has shaped much of East Africa's geography. The nearby Usangu Plains stretch out to the southeast, offering vast expanses of relatively flat terrain.

For large-scale solar PV installations, the areas most suited would likely be found in the flatter regions to the south and southeast of Mbeya. The Usangu Plains, in particular, offer several advantages for solar energy development:

1. Flat terrain: The level ground makes construction and maintenance of solar arrays easier and more cost-effective.
2. Open spaces: There are large, unobstructed areas that receive ample sunlight throughout the day.
3. Lower elevation: Compared to the mountainous regions, these areas have less cloud cover and fog, ensuring more consistent solar radiation.
4. Proximity to infrastructure: The plains are closer to existing roads and power transmission lines, which is crucial for connecting solar farms to the grid.

While the plains offer the most suitable conditions, it's important to note that specific site selection would require detailed environmental and technical assessments. Factors such as local climate patterns, soil conditions, and proximity to wildlife areas would need to be carefully considered to ensure the sustainability and efficiency of any large-scale solar PV project in the region.

Citation Guide

Article Details for Citation

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.