Boa Vista, Roraima, Brazil, located at coordinates 2.8236, -60.6745, offers an excellent location for solar PV energy generation throughout the year. This tropical location benefits from consistent sunlight patterns with relatively stable energy production across all seasons.

The solar energy potential in Boa Vista demonstrates remarkable consistency. During autumn, the location reaches its peak production at 6.18kWh per day for each kilowatt of installed capacity. Summer and winter show nearly identical outputs at 5.15kWh/day and 5.17kWh/day respectively, while spring produces a slightly lower but still substantial 5.03kWh/day per installed kilowatt.

Seasonal Variations and Optimal Production

The data reveals that autumn (approximately March to May) represents the prime period for solar energy generation in Boa Vista. This seasonal advantage likely corresponds with the transition between wet and dry seasons typical of tropical regions. The relatively small variation between the highest and lowest seasonal outputs (approximately 1.15kWh/day difference) indicates excellent year-round reliability for solar power generation.

For fixed solar panel installations in Boa Vista, Roraima, the ideal tilt angle to maximize year-round production is 3 degrees South. This nearly horizontal orientation reflects Boa Vista's proximity to the equator, where the sun passes almost directly overhead throughout much of the year.

Environmental Considerations

Several environmental factors could potentially impact solar production in Boa Vista:

• Heavy rainfall during the wet season (typically April to August) may reduce solar efficiency through cloud cover and direct rainfall on panels.
• Dust accumulation is a significant concern, particularly during the dry season when winds can carry substantial particulate matter.
• High humidity levels may contribute to accelerated degradation of system components if not properly protected.

Preventative Measures

To maximize energy production despite these challenges, several preventative measures are recommended when installing solar systems in Boa Vista:

• Implement automated cleaning systems or regular maintenance schedules to address dust accumulation
• Use high-quality, humidity-resistant components with appropriate IP (Ingress Protection) ratings
• Consider slight adjustments to the panel angle during installation to facilitate natural cleaning during rainfall
• Install lightning protection systems, as tropical regions often experience frequent electrical storms
• Use anti-reflective, hydrophobic glass coatings to minimize water adhesion and maximize light absorption

With these considerations addressed, Boa Vista's consistent solar radiation makes it an ideal location for solar PV installations with reliable energy production 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 3161 locations across Brazil. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Brazil by location

Solar output per kW of installed solar PV by season in Boa Vista

Seasonal solar PV output for Latitude: 2.8236, Longitude: -60.6745 (Boa Vista, Brazil), 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 3° South in Boa Vista, Brazil

To maximize your solar PV system's energy output in Boa Vista, Brazil (Lat/Long 2.8236, -60.6745) throughout the year, you should tilt your panels at an angle of 3° 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 Boa Vista, Brazil

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 Boa Vista, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 3° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
13° North in Summer	8° South in Autumn	18° South 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 Boa Vista, Brazil

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 Boa Vista, Brazil.

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 Boa Vista, Brazil

Boa Vista, the capital of Roraima state in northern Brazil, sits on a landscape characterized predominantly by low-lying plains. The city is located on the western bank of the Rio Branco, a major tributary of the Amazon River system. This region is part of the vast Amazon Basin, but with distinctive topographical features that set it apart from the densely forested areas more commonly associated with Amazonia. The terrain surrounding Boa Vista consists primarily of savanna-like plains known locally as "lavrado" or, more broadly, as part of the "cerrado" ecosystems. These open grasslands feature scattered trees and shrubs, creating a landscape that resembles a savanna more than a tropical rainforest. The elevation around Boa Vista is relatively modest, typically ranging between 80 to 100 meters above sea level, with minimal variation across the immediate vicinity of the city.

Surrounding Topographical Features

To the north and northeast of Boa Vista, the landscape gradually transitions toward the border with Venezuela and Guyana. In these directions, the terrain begins to rise, eventually reaching the southern foothills of the Guiana Shield, an ancient geological formation. The most notable elevated features in the broader region include Mount Roraima and other tepuis (table-top mountains), though these are considerably distant from Boa Vista itself. The western and southern regions maintain the characteristic lavrado plains, with occasional patches of gallery forests along waterways. The Rio Branco river system creates a network of smaller tributaries and seasonal streams that dissect the landscape, particularly during the rainy season.

Potential Areas for Solar PV Development

The extensive flat plains surrounding Boa Vista present excellent opportunities for large-scale solar photovoltaic installations. The most suitable areas would be the open lavrado regions to the north and northwest of the city, where the combination of flat terrain, minimal forest cover, and good accessibility via existing road networks creates ideal conditions for solar development. The northeastern corridor, extending roughly 30-50 kilometers from the city center, offers particularly promising locations. These areas benefit from minimal shading obstacles, stable soil conditions, and sufficient distance from sensitive ecological zones like riverine forests. The western plains also present viable options, though careful consideration should be given to seasonal drainage patterns in some locations. The relatively stable geological foundation throughout the region means that ground-mounted systems can be installed without extraordinary foundation requirements in most areas. The southern sectors, while topographically suitable, may require more detailed ecological assessment as they feature greater connectivity to the broader Amazon ecosystem in some places. From a purely topographical perspective, the flat, open character of the lavrado landscapes surrounding Boa Vista in nearly all directions creates a situation where site selection can prioritize other factors such as grid connection proximity, land ownership patterns, and environmental considerations rather than being constrained by challenging terrain.

Brazil solar PV Stats as a country

Brazil ranks 13th in the world for cumulative solar PV capacity, with 13,708 total MW's of solar PV installed. This means that 2.50% of Brazil's total energy as a country comes from solar PV (that's 31st in the world). Each year Brazil is generating 64 Watts from solar PV per capita (Brazil ranks 47th in the world for solar PV Watts generated per capita). [source]

Are there incentives for businesses to install solar in Brazil?

Yes, there are several incentives for businesses wanting to install solar energy in Brazil. The Brazilian government offers a range of tax credits and other financial incentives to encourage the adoption of renewable energy sources such as solar power. These include reduced import taxes on solar equipment, accelerated depreciation of investments in renewable energy projects, and preferential financing from public banks. Additionally, some states offer additional incentives such as subsidies or grants for businesses that install solar systems.

Do you have more up to date information than this on incentives towards solar PV projects in Brazil? Please reach out to us and help us keep this information current. Thanks!

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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.