Barcellos, Amazonas, Brazil presents an excellent location for year-round solar energy generation through photovoltaic panels. Located in the heart of the Amazon region at coordinates -0.3917, -63.5408, this tropical location benefits from consistent sunlight throughout the year, with seasonal variations driven more by wet and dry periods than traditional temperature-based seasons.

Solar Energy Output Performance

The solar energy production at Barcellos shows strong performance across all seasons. Spring delivers the highest output at 5.50kWh per day per kW of installed solar capacity, followed closely by summer at 5.24kWh per day. Winter maintains solid production at 4.71kWh per day, while autumn shows the lowest output at 4.60kWh per day per kW installed. This relatively small seasonal variation demonstrates the location's reliability for solar energy generation. The difference between the best and worst performing seasons is less than 1kWh per day per kW, indicating consistent energy production potential throughout the year.

Optimal Panel Installation

For fixed panel installations at Barcellos, Amazonas, the ideal tilt angle to maximize total year-round solar production is 0 degrees - essentially flat panels. This recommendation comes from detailed calculations considering daily solar elevation angles, optimal panel positioning, and weighting based on solar irradiance data throughout the year.

Environmental Challenges and Solutions

Several significant environmental factors in the Barcellos region can impact solar panel performance and require careful consideration during installation. The Amazon's high humidity levels pose the primary challenge for solar installations. Excessive moisture can lead to corrosion of electrical components, degradation of panel materials, and reduced efficiency over time. Additionally, the region's frequent heavy rainfall during wet seasons can create water accumulation issues if panels aren't properly designed for drainage. Dense vegetation growth is another concern, as the tropical climate supports rapid plant growth that can shade panels or create debris accumulation. The region also experiences occasional severe weather events, including strong winds and intense storms that can damage installations.

Preventative Measures for Enhanced Performance

To combat humidity-related issues, solar installations should incorporate high-quality weatherproof electrical enclosures and use marine-grade wiring and connections designed for tropical environments. Regular maintenance schedules become crucial for cleaning panels and inspecting seals and connections. Proper drainage design is essential, with panels mounted to allow rapid water runoff and prevent standing water. The mounting systems should be constructed from corrosion-resistant materials such as aluminum or galvanized steel with appropriate protective coatings. Vegetation management requires establishing clear zones around solar installations and implementing regular trimming schedules. Installing panels at sufficient height above ground level helps minimize shading from undergrowth while maintaining accessibility for maintenance. For weather resilience, mounting systems must exceed standard wind load requirements and incorporate secure anchoring appropriate for local soil conditions. Using tempered glass panels with strong frames helps withstand impact from debris during storms. Regular cleaning protocols become particularly important in this environment, as the combination of humidity, rainfall, and organic matter can create films on panel surfaces that reduce light transmission and energy output.

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 Barcellos

Seasonal solar PV output for Latitude: -0.3917, Longitude: -63.5408 (Barcellos, 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 0° in Barcellos, Brazil

To maximize your solar PV system's energy output in Barcellos, Brazil (Lat/Long -0.3917, -63.5408) throughout the year, you should tilt your panels at an angle of 0° 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 Barcellos, 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 Barcellos, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 0° tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
15° South in Summer	7° North in Autumn	16° North in Winter	5° 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 Barcellos, 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 Barcellos, 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 Barcellos, Brazil

Topography Around Barcellos

Barcellos sits in the heart of the Amazon Basin in northwestern Brazil, positioned along the Rio Negro approximately 400 kilometers upstream from Manaus. The surrounding landscape is characterized by relatively flat terrain with gentle undulations typical of the Amazon lowlands. The elevation in this region remains consistently low, generally ranging between 30 to 80 meters above sea level, creating an expansive floodplain environment that extends for hundreds of kilometers in all directions.

The topography is dominated by the meandering Rio Negro and its numerous tributaries, which create a complex network of waterways, seasonal floodplains, and elevated interfluves. During the annual flood cycle, large portions of the surrounding landscape become inundated, leaving only the higher ground areas accessible. These elevated areas, known locally as "terra firme," represent the most stable terrain in the region and remain above the seasonal flood levels throughout the year.

The landscape features a mix of dense primary rainforest, secondary growth areas, and scattered clearings. The forest canopy creates significant variations in ground-level light penetration, while the underlying soil consists primarily of nutrient-poor oxisols and ultisols typical of the Amazon Basin. Natural clearings are relatively rare, and most open areas result from human activities such as agriculture or settlement development.

Areas Most Suitable for Large-Scale Solar PV

The most promising locations for large-scale solar photovoltaic installations around Barcellos would be the terra firme areas that remain consistently above flood levels. These elevated interfluves, typically found between major waterways, provide the stable foundation necessary for permanent infrastructure while avoiding the complications associated with seasonal flooding.

Areas to the east and southeast of Barcellos present particularly favorable conditions, as the terrain gradually rises moving away from the Rio Negro floodplain. This region contains larger continuous patches of elevated ground that could accommodate substantial solar installations without requiring extensive forest clearing in primary growth areas. The slightly higher elevation also provides better drainage and reduces humidity-related maintenance challenges.

Previously disturbed or degraded land areas would represent the most environmentally responsible choice for solar development. These locations, which may have been used for agriculture, cattle ranching, or other human activities, often feature reduced forest cover and established access routes. Such areas minimize the environmental impact while providing suitable conditions for solar panel installation and maintenance access.

The northern approaches to Barcellos, where the terrain connects to higher ground leading toward the Venezuelan border, also offer potential sites. This region features more pronounced topographical variation and includes areas of naturally occurring savanna vegetation mixed with forest, potentially reducing the need for extensive land clearing operations.

Transportation accessibility remains a critical factor for any large-scale solar development in this remote region. Areas within reasonable distance of the existing road network or river transportation routes would be essential for construction logistics and ongoing maintenance operations. The proximity to Barcellos itself provides advantages in terms of existing infrastructure and potential grid connection points for power distribution.

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.