Boa Vista, Brazil, located in the Southern Sub Tropics at coordinates -26.787, -52.9904, presents a moderately favorable location for year-round solar energy generation, though with significant seasonal variations that potential solar installers should carefully consider.

Seasonal Solar Performance

The solar energy output at this location varies considerably throughout the year. Summer delivers the strongest performance at 7.02 kWh per day per kW of installed solar capacity, making it the ideal season for solar generation. Spring follows as the second-best performing season with 6.07 kWh per day per kW, while autumn drops to 5.23 kWh per day per kW. Winter presents the most challenging conditions, with output falling to just 3.94 kWh per day per kW of installed capacity. This seasonal pattern means that solar installations at Boa Vista will generate nearly 78% more electricity in summer compared to winter. The substantial difference between peak and low seasons suggests that energy storage solutions or grid-tied systems may be particularly valuable for maintaining consistent power supply year-round.

Optimal Panel Configuration

For maximum year-round solar production at this location, solar panels should be installed at a fixed tilt angle of 24 degrees facing north. This optimal angle is calculated by analyzing daily solar elevation angles throughout the year and weighting them according to solar irradiance data, accounting for Earth's elliptical orbit around the sun.

Local Factors Affecting Solar Production

Several environmental and weather factors in this Southern Sub Tropical region could potentially impact solar energy production:

• High humidity levels typical of subtropical climates can reduce panel efficiency and create more frequent cleaning requirements
• Seasonal rainfall patterns may cause temporary reductions in solar output during wet periods
• Potential for hail storms during certain seasons could damage panels if not properly protected
• Dust and debris accumulation during drier periods can significantly reduce panel efficiency

Preventative Measures for Enhanced Performance

To maximize solar energy production despite these challenges, several installation strategies should be considered:

• Install panels with adequate spacing and ventilation to reduce heat buildup in humid conditions
• Choose panels with anti-reflective coatings and self-cleaning properties where possible
• Implement regular cleaning schedules, particularly during dusty seasons
• Consider hail-resistant panel designs or protective measures in areas prone to severe weather
• Ensure proper drainage around installations to prevent water damage during heavy rainfall periods

Overall, while Boa Vista offers reasonable solar potential, the significant seasonal variation and subtropical climate conditions require careful planning and maintenance to achieve optimal long-term performance from solar installations.

Note: The Southern Sub Tropics extend from -23.5° latitude South down to -35° latitude.

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, Santa Catarina

Seasonal solar PV output for Latitude: -26.787, Longitude: -52.9904 (Boa Vista, Santa Catarina, 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 24° North in Boa Vista, Santa Catarina, Brazil

To maximize your solar PV system's energy output in Boa Vista, Santa Catarina, Brazil (Lat/Long -26.787, -52.9904) throughout the year, you should tilt your panels at an angle of 24° 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 Boa Vista, Santa Catarina, 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, Santa Catarina, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 24° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
11° North in Summer	32° North in Autumn	42° North in Winter	19° 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, Santa Catarina, 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, Santa Catarina, 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, Santa Catarina, Brazil

Topographical Features of Boa Vista, Brazil

Boa Vista is situated in the state of Roraima in northern Brazil, positioned within the vast Guiana Highlands region. The area around these coordinates features predominantly flat to gently rolling terrain, characteristic of the northern Brazilian landscape. The elevation in this region typically ranges from approximately 90 to 150 meters above sea level, creating a relatively uniform topographical profile that extends across much of the surrounding territory.

The landscape is dominated by expansive savannas known locally as "lavrado," which are punctuated by scattered clusters of trees and occasional gallery forests along waterways. These open grasslands stretch for considerable distances, broken only by seasonal wetlands and the meandering paths of rivers and streams that drain toward the Amazon basin. The terrain generally slopes very gradually northward toward the border with Venezuela and Guyana.

Rocky outcrops and small hills occasionally rise from the otherwise level plains, representing remnants of the ancient Precambrian shield that underlies much of northern South America. These formations, while not dramatically tall, create subtle variations in the local topography and can influence drainage patterns and vegetation distribution across the region.

Optimal Areas for Large-Scale Solar Development

The extensive flat and gently undulating terrain surrounding Boa Vista presents excellent opportunities for large-scale solar photovoltaic installations. The most suitable areas would be the expansive savanna lands that stretch in multiple directions from the city, particularly those areas with minimal tree coverage and consistent gentle slopes that facilitate proper drainage while maintaining optimal panel orientation.

Areas to the east and southeast of Boa Vista appear particularly promising due to their combination of level terrain, sparse vegetation, and good accessibility via existing road networks. These zones offer the advantage of requiring minimal site preparation while providing adequate space for extensive solar arrays. The natural drainage characteristics of these areas also help prevent water accumulation that could interfere with installation maintenance.

The regions north and west of the city, while topographically suitable, may present some challenges due to seasonal flooding patterns and proximity to protected environmental areas. However, careful site selection within these zones could still yield viable locations for solar development, particularly on slightly elevated areas that remain above seasonal water levels.

Areas with existing infrastructure access, such as proximity to transmission lines and major transportation routes, would be especially advantageous for large-scale solar projects. The relatively uniform topography across much of the region means that site selection can prioritize these practical considerations without being significantly constrained by terrain limitations.

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.