Cidade Velha, Ribeira Grande de Santiago, Cabo Verde, located at 14.9127°N, -23.616°E, offers a promising location 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.

Solar Energy Potential

The solar energy output at Cidade Velha demonstrates strong potential across all seasons. Spring stands out as the most productive period, with an impressive 7.49 kWh per day for each kilowatt of installed solar capacity. Summer follows closely with 6.65 kWh/day, while autumn and winter show slightly lower but still substantial outputs of 5.98 kWh/day and 5.46 kWh/day, respectively. These figures indicate that Cidade Velha is well-suited for year-round solar energy production, with only minor fluctuations between seasons. The location's proximity to the equator ensures a relatively stable solar resource throughout the year, making it an attractive site for solar PV installations.

Optimal Panel Tilt

For fixed solar panel installations in Cidade Velha, Ribeira Grande de Santiago, the ideal tilt angle to maximize year-round energy production is 13 degrees facing South. This angle has been calculated considering the location's latitude, daily solar elevation angles, and weighted by NASA's solar irradiance data. This optimal tilt ensures that the panels capture the maximum amount of sunlight throughout the year, accounting for the Earth's elliptical orbit and the sun's changing position in the sky.

Environmental and Weather Considerations

While Cidade Velha's location is generally favorable for solar energy production, there are a few factors to consider: 1. Dust and salt spray: Being close to the coast, salt spray and dust accumulation on panels could potentially reduce efficiency over time. 2. Tropical storms: Although less frequent than in other tropical regions, occasional storms could impact solar production. To mitigate these factors, the following preventative measures can be taken:

• Regular cleaning and maintenance of solar panels to remove salt and dust buildup
• Use of corrosion-resistant materials for mounting systems and electrical components
• Installation of robust mounting systems capable of withstanding strong winds
• Implementing a monitoring system to quickly identify and address any performance issues

By taking these precautions, solar installations in Cidade Velha can maximize their energy production potential and ensure long-term reliability. Overall, the location's consistent sunlight and favorable conditions make it an excellent choice for solar PV energy generation 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 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 Cidade Velha

Seasonal solar PV output for Latitude: 14.9127, Longitude: -23.616 (Cidade Velha, 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 13° South in Cidade Velha, Cabo Verde

To maximize your solar PV system's energy output in Cidade Velha, Cabo Verde (Lat/Long 14.9127, -23.616) throughout the year, you should tilt your panels at an angle of 13° 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 Cidade Velha, 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 Cidade Velha, Cabo Verde. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 13° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
1° North in Summer	20° South in Autumn	30° South in Winter	8° 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 Cidade Velha, 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 Cidade Velha, 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 Cidade Velha, Cabo Verde

Cidade Velha, located on the island of Santiago in Cabo Verde, is characterized by a diverse and rugged topography. The town itself is situated in a small coastal valley, nestled between steep cliffs and the Atlantic Ocean. The surrounding landscape is dominated by volcanic features, as Cabo Verde is an archipelago of volcanic origin.

The immediate area around Cidade Velha consists of a narrow coastal plain that quickly gives way to rising terrain. As you move inland, the landscape becomes increasingly hilly and mountainous. The slopes are often steep and rocky, with numerous ravines and gullies carved by seasonal water flows. These hills and mountains can reach heights of several hundred meters above sea level within just a few kilometers of the coast.

The vegetation in the region is generally sparse, typical of a semi-arid climate. You'll find scattered shrubs, grasses, and drought-resistant plants, with some areas appearing quite barren. The combination of steep terrain and limited vegetation contributes to soil erosion, which is visible in many parts of the landscape.

When considering areas nearby that would be most suited to large-scale solar PV (photovoltaic) installations, there are a few key factors to consider. Ideally, you'd want relatively flat or gently sloping terrain that receives ample sunlight throughout the day. Given the topography around Cidade Velha, the most suitable areas would likely be found on the higher plateaus or gentler slopes of the surrounding hills.

Specifically, areas to the north and east of Cidade Velha, where the terrain begins to level out somewhat, could be potential candidates for solar PV installations. These locations would offer a good balance of elevation (to avoid coastal influences like salt spray and potential flooding) and more manageable slopes. The semi-arid climate of Cabo Verde, with its abundant sunshine and limited cloud cover, is generally favorable for solar energy production.

However, it's important to note that any large-scale solar project would need to carefully consider environmental impacts, land use issues, and the challenges of building and maintaining infrastructure in this rugged terrain. Additionally, detailed site surveys and solar radiation studies would be necessary to determine the most optimal locations for maximum energy production.

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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.