Mapou, Rivière du Rempart District, Mauritius presents a highly favorable location for year-round solar PV energy generation. Located in the tropical zone at coordinates -20.0737, 57.6022, this area benefits from the consistent sunlight characteristic of tropical regions, where seasonal variations are primarily defined by wet and dry periods rather than dramatic changes in solar availability.

Seasonal Solar Performance

The solar energy output data reveals strong performance across all seasons, with summer delivering the highest production at 7.82 kWh per day per kW of installed capacity. Spring follows closely with 7.23 kWh per day per kW, making these the optimal seasons for solar generation at this location. Autumn and winter show reduced but still substantial output at 5.45 kWh and 4.62 kWh per day per kW respectively. For fixed panel installations at Mapou, Rivière du Rempart District, the ideal tilt angle is 17 degrees facing North to maximize total year-round production. This angle is calculated by analyzing daily solar elevation angles throughout the year and weighting them according to solar irradiance potential.

Environmental and Weather Challenges

Several local factors could potentially impact solar production efficiency in Mapou:

• Tropical cyclones and severe weather: Mauritius lies within the Southwest Indian Ocean cyclone basin, with the cyclone season typically running from November to April
• High humidity and salt air: The coastal tropical environment creates corrosive conditions that can degrade solar equipment over time
• Heavy rainfall during wet season: Intense tropical downpours can temporarily reduce solar output and create maintenance challenges
• Dust and debris accumulation: Trade winds can carry dust and organic matter that settles on panels, reducing efficiency

Preventative Installation Measures

To maximize energy production despite these challenges, several installation strategies should be implemented. Panels should be mounted using reinforced racking systems designed to withstand cyclonic winds, with proper anchoring to resist uplift forces. All electrical components must be rated for marine environments with appropriate IP ratings to resist moisture and salt corrosion. Installing panels at the optimal 17-degree angle not only maximizes energy capture but also promotes natural cleaning through rainfall runoff. Regular maintenance schedules should include cleaning panels during dry periods and inspecting all connections for corrosion. Consider installing monitoring systems that can detect performance drops due to soiling or equipment issues. Using high-quality inverters with robust environmental protection and positioning them in shaded, well-ventilated areas will extend equipment life. Additionally, implementing proper drainage around ground-mounted systems prevents water pooling during heavy rains. Despite these environmental considerations, Mapou's consistent tropical sunlight and strong seasonal performance make it an excellent location for solar PV installations when proper precautions are taken during design and installation.

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

Link: Solar PV potential in Mauritius by location

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

Seasonal solar PV output for Latitude: -20.0737, Longitude: 57.6022 (Mapou, Mauritius), 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 17° North in Mapou, Mauritius

To maximize your solar PV system's energy output in Mapou, Mauritius (Lat/Long -20.0737, 57.6022) throughout the year, you should tilt your panels at an angle of 17° 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 Mapou, Mauritius

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 Mapou, Mauritius. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 17° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
4° North in Summer	25° North in Autumn	36° North in Winter	13° 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 Mapou, Mauritius

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 Mapou, Mauritius.

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 Mapou, Mauritius

Topographical Features Around Mapou

Mapou is situated in the northern region of Mauritius, positioned within a relatively flat coastal plain that characterizes much of the island's northern shoreline. The immediate area around Mapou features gently undulating terrain with elevations that rarely exceed 50 meters above sea level. This low-lying landscape is typical of the coastal zones that ring Mauritius, where ancient coral formations and sedimentary deposits have created expansive flat areas ideal for agriculture and development. The topography gradually rises as one moves inland from Mapou toward the island's central plateau. To the southeast, the land begins its ascent toward the dramatic mountain ranges that form Mauritius's spine, including the Moka Range and the central highlands. However, the immediate vicinity of Mapou remains predominantly flat to gently rolling, with occasional small hills and ridges breaking up the otherwise uniform landscape. The area is characterized by well-drained soils and relatively stable ground conditions, with minimal risk of significant slope instability or erosion. The coastal proximity means that the terrain has been shaped by both marine and terrestrial processes over geological time, resulting in a landscape that is generally suitable for various forms of development and land use.

Optimal Areas for Large-Scale Solar Installation

The flat to gently rolling terrain surrounding Mapou presents excellent opportunities for large-scale solar photovoltaic installations. The most suitable areas would be the expansive flat plains that extend both east and west of Mapou, where minimal grading would be required and installation costs could be kept to a minimum. These areas offer the dual advantages of stable ground conditions and unobstructed solar access throughout the day. Particularly promising locations include the agricultural lands to the immediate south and southwest of Mapou, where the terrain remains relatively flat but sits slightly elevated above the immediate coastal zone. This positioning provides protection from potential coastal flooding while maintaining the topographical advantages of level ground. The slight elevation also ensures good drainage, which is essential for the long-term maintenance and operation of solar installations. The areas extending toward the interior, roughly 2-5 kilometers inland from Mapou, represent an optimal balance between accessibility and land suitability. These locations maintain the favorable flat topography while being positioned far enough from the coast to avoid the most severe effects of salt spray and coastal weather patterns. The terrain in these areas typically consists of gentle slopes of less than 5 degrees, which is ideal for solar panel installation and maintenance access. Areas to avoid for large-scale solar development would include the immediate coastal strip, where salt exposure and potential storm surge could pose risks to equipment, and the more elevated terrain to the southeast where slopes become steeper and may require extensive site preparation. The relatively uniform topography of the region means that site selection can focus primarily on factors such as land availability, grid connectivity, and environmental considerations rather than being constrained by challenging terrain features.

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.