Solar Energy Potential in Sal Rei, Boa Vista, Cabo Verde

Sal Rei, Boa Vista, located in Cabo Verde at coordinates 16.184, -22.9206, offers a promising location for solar energy generation throughout the year. This tropical location benefits from consistent sunlight patterns, making it a favorable site for solar PV installations. The seasonal energy production shows strong potential across all parts of the year. Spring stands out as the most productive season, with panels capable of generating an impressive 7.22 kWh per day for each kilowatt of installed capacity. Summer follows with solid production at 6.49 kWh/day, while autumn and winter show slightly reduced but still substantial outputs at 5.64 kWh/day and 5.26 kWh/day respectively.

Seasonal Variations and Optimal Generation Periods

The data reveals that Sal Rei experiences its peak solar generation potential during spring months, followed by summer. While winter shows the lowest production, the difference between seasons is relatively modest compared to non-tropical locations, demonstrating the advantage of Sal Rei's geographical position near the equator. For fixed solar panel installations in Sal Rei, Boa Vista, the ideal tilt angle to maximize year-round energy production is 14 degrees facing South. This carefully calculated angle optimizes the capture of solar radiation throughout the year, accounting for the Earth's elliptical orbit and Sal Rei's specific latitude.

Environmental Considerations

Several environmental factors require consideration when installing solar PV systems in Sal Rei:

• Coastal salt exposure: Sal Rei's proximity to the Atlantic Ocean means salt-laden air can corrode solar equipment. Installations should use marine-grade components with corrosion-resistant coatings and regular maintenance protocols.
• Dust and sand accumulation: The region experiences periods of dust-laden winds from the Sahara (Harmattan winds), which can significantly reduce panel efficiency. Implementing automated cleaning systems or regular maintenance schedules can mitigate this issue.
• Occasional tropical storms: While less frequent than in other tropical regions, storms can occur and potentially damage installations. Robust mounting systems designed to withstand high winds are essential.

Despite these challenges, Sal Rei's consistent solar radiation throughout the year makes it an excellent location for solar energy production. With proper system design addressing the environmental factors mentioned above, solar installations can operate efficiently and productively year-round.

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 Cabo Verde. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Cabo Verde by location

Solar output per kW of installed solar PV by season in Sal Rei

Seasonal solar PV output for Latitude: 16.184, Longitude: -22.9206 (Sal Rei, Cabo Verde), 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 14° South in Sal Rei, Cabo Verde

To maximize your solar PV system's energy output in Sal Rei, Cabo Verde (Lat/Long 16.184, -22.9206) throughout the year, you should tilt your panels at an angle of 14° 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 Sal Rei, Cabo Verde

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 Sal Rei, Cabo Verde. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 14° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
0° in Summer	21° South in Autumn	31° South in Winter	10° 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 Sal Rei, Cabo Verde

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 Sal Rei, Cabo Verde.

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 Sal Rei, Cabo Verde

Sal Rei is the main settlement on Boa Vista, one of the easternmost islands in the Cabo Verde archipelago. The topography around Sal Rei is characterized by a relatively flat coastal plain that gradually transitions into more elevated terrain toward the interior of the island. The immediate surroundings of Sal Rei consist of sandy beaches and low-lying coastal areas, with elevations typically less than 30 meters above sea level. Moving inland from Sal Rei, the landscape begins to rise gently, forming a series of rolling hills and plateaus. Boa Vista as a whole is one of the flattest islands in Cabo Verde, with its highest point, Monte Estância, reaching only about 387 meters. The terrain is predominantly arid and semi-desert in nature, with sparse vegetation consisting mainly of drought-resistant shrubs and grasses.

Geological Features

The island's geology is primarily volcanic in origin, like the rest of the Cabo Verde archipelago, though Boa Vista is among the oldest islands in the group and has experienced significant erosion over time. This erosional process has smoothed many of the volcanic features, creating the relatively flat topography that characterizes much of the island. Sand dunes are a prominent feature of Boa Vista's landscape, particularly in the northern and eastern portions of the island. These dunes can be quite extensive, forming part of what makes Boa Vista known as the "desert island" of Cabo Verde. The Viana Desert, located in the northeastern part of the island, is a notable expanse of sand dunes that creates an almost Saharan landscape.

Optimal Areas for Solar PV Development

For large-scale solar photovoltaic installations, the interior plateaus of Boa Vista offer the most promising locations. These areas benefit from several advantageous characteristics: The central and southern interior regions of Boa Vista, between 5-15 kilometers from Sal Rei, provide elevated flat terrain that receives consistent solar radiation throughout the year. These plateau areas, with elevations between 50-150 meters, offer stable ground for installation of extensive solar arrays. The northwestern sector of the island, beyond the immediate vicinity of Sal Rei, also presents suitable topography for solar development. This region features gently sloping terrain with minimal vegetation and few competing land uses. Areas to avoid include the coastal dune systems, which are unstable for construction purposes, and the few agricultural valleys where the island's limited farming activities take place. Additionally, the far eastern portions of the island contain nature reserves and important turtle nesting beaches that should be preserved. The ideal solar PV locations would be accessed via the existing road network that connects Sal Rei to the interior settlements, minimizing the need for extensive new infrastructure development. These interior regions also experience less coastal salt spray, which can degrade solar equipment over time. The relatively flat terrain throughout much of Boa Vista means that extensive grading and earthworks would not be necessary for solar installations, reducing both environmental impact and construction costs. The sparse vegetation and limited agricultural use of much of the interior means that land use conflicts would be minimized compared to more developed or ecologically sensitive areas.

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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.