Solar Energy Potential in Petit Raffray, Rivière du Rempart District, Mauritius
Petit Raffray, Rivière du Rempart District, located in northern Mauritius, offers a relatively favorable location for solar PV installations with some seasonal variations in energy production. This tropical location benefits from consistent sunlight throughout much of the year, though with distinct performance differences between seasons. The solar energy generation potential in Petit Raffray demonstrates strong seasonal patterns. During summer months, solar panels perform at their peak efficiency, generating approximately 7.81 kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season, with daily generation of about 7.20 kWh per kilowatt. Energy production decreases considerably during autumn (5.44 kWh/day) and reaches its lowest point in winter (4.62 kWh/day). For residents and businesses considering solar installations in Petit Raffray, Rivière du Rempart District, this data suggests that approximately 60% of annual energy production will occur during summer and spring months. However, the relatively modest drop in winter production (compared to temperate regions) means that solar remains viable year-round, just with reduced output during the cooler seasons.Optimal Installation Parameters
For fixed solar panel installations in Petit Raffray, Rivière du Rempart District, the ideal tilt angle to maximize year-round energy production is 17 degrees facing North. This specific angle has been calculated based on the location's latitude, accounting for seasonal sun paths and the Earth's elliptical orbit to optimize annual energy harvest.Environmental Challenges and Mitigation Strategies
Several environmental factors in Petit Raffray may impact solar production:- Cyclone exposure: Mauritius experiences cyclone season from November to April, with potential for extreme winds that can damage solar installations. Reinforced mounting systems designed to withstand winds of at least 180 km/h are strongly recommended.
- Salt corrosion: Being close to the ocean, salt-laden air can accelerate corrosion of components. Marine-grade materials and regular maintenance can significantly extend system lifespan.
- Humidity and rainfall: The high humidity levels, particularly during the wet season, may increase the risk of electrical component degradation over time. Weather-sealed junction boxes and proper cable management are essential.
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 Petit Raffray
Seasonal solar PV output for Latitude: -20.0273, Longitude: 57.624 (Petit Raffray, 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 Petit Raffray, Mauritius
To maximize your solar PV system's energy output in Petit Raffray, Mauritius (Lat/Long -20.0273, 57.624) 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 Petit Raffray, 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 Petit Raffray, 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 | 35° 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 Petit Raffray, 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 Petit Raffray, Mauritius.
Our calculation method
- Solar Position:
We determine the Sun's position on the Winter solstice using the location's latitude and solar declination. - Shadow Projection:
We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle. - 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 Petit Raffray, Mauritius
Petit Raffray is situated in the northern region of Mauritius, an island nation in the Indian Ocean east of Madagascar. The topography around Petit Raffray is characterized by gently rolling coastal plains that gradually rise into more elevated inland areas. This northern part of Mauritius features relatively flat terrain near the coast, with modest hills becoming more prominent as one moves southward toward the central plateau of the island.
The immediate vicinity of Petit Raffray consists of agricultural lands, small settlements, and scattered vegetation. The landscape is a mosaic of sugarcane fields, mixed cultivation areas, and patches of tropical vegetation. The northern coastal region where Petit Raffray is located benefits from generally level terrain with good exposure to sunlight throughout the year.
Surrounding Topographical Features
To the north of Petit Raffray lies the coastline of Mauritius, with beautiful beaches and shallow coastal waters. The eastern and western surroundings continue the pattern of gentle undulations typical of the northern plains. As one moves south from Petit Raffray, the elevation gradually increases toward the central highlands of Mauritius, where more significant hills and mountains can be found.
The highest points on the island are located in the southwest, quite distant from Petit Raffray, where peaks like Piton de la Petite Rivière Noire reach over 800 meters above sea level. The northern region around Petit Raffray, by contrast, rarely exceeds 100 meters in elevation, making it one of the flatter portions of the island.
Areas Suitable for Solar PV Development
The most suitable areas for large-scale solar photovoltaic (PV) development near Petit Raffray would be the open agricultural lands that feature minimal shading, good drainage, and relatively flat topography. The gently sloping fields that have been previously used for sugarcane cultivation represent particularly promising sites, as they typically offer unobstructed solar exposure.
The coastal plains extending east and west from Petit Raffray present favorable conditions for solar installations due to their open aspect and minimal topographical barriers. These areas benefit from the northern position on the island, which generally experiences less cloud cover than the central highlands or southern regions during certain seasons.
Areas to avoid would include the more densely vegetated sections with mature trees that could cast shadows, low-lying areas prone to flooding during the cyclone season, and any protected natural reserves. Additionally, as one moves further south toward the central plateau, increasing elevation and more variable terrain may introduce complications for large-scale installations, though some moderately sloping hillsides with northern exposure could still be suitable if properly engineered.
The abandoned or less productive agricultural lands surrounding Petit Raffray offer particular promise for solar development, as they provide substantial open space with existing access roads, are already disturbed (minimizing additional environmental impact), and are generally positioned away from dense residential areas while remaining close enough to existing electrical infrastructure to facilitate grid connection.
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Wednesday 4th of June 2025
Last Updated: Monday 21st of July 2025
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.




