São Francisco, Brazil represents an exceptionally favorable location for year-round solar PV energy generation. Located in the tropics at coordinates -1.1464, -47.7571, this area benefits from consistent sunlight throughout most of the year, with seasons characterized more by wet and dry periods rather than dramatic temperature variations.

Solar Energy Production Performance

The solar energy output data for São Francisco demonstrates remarkably consistent and high performance across all seasons. The location generates between 5.03 and 6.27 kWh per day per kW of installed solar capacity, which represents excellent productivity for solar installations. Spring emerges as the peak season for solar generation, producing 6.27 kWh/day per kW of installed capacity. Winter follows closely behind at 6.04 kWh/day, making these the optimal months for maximum solar energy production. Autumn delivers 5.36 kWh/day, while summer provides 5.03 kWh/day per kW of installed capacity. For fixed panel installations at this location, the ideal tilt angle to maximize total year-round production is 2 degrees North. This shallow angle reflects the location's proximity to the equator, where the sun remains relatively high in the sky throughout the year.

Environmental and Weather Challenges

Despite the excellent solar potential, several local factors could impact solar production efficiency in São Francisco:

• High humidity and moisture: The tropical climate brings elevated humidity levels that can reduce panel efficiency and promote corrosion of electrical components
• Heavy rainfall during wet seasons: Intense tropical downpours can temporarily reduce solar output and may cause water damage if systems aren't properly sealed
• Dense vegetation growth: The tropical environment encourages rapid plant growth that could create shading issues over time
• Dust and organic debris: High humidity combined with vegetation can lead to faster accumulation of organic matter on panel surfaces

Preventative Measures for Optimal Performance

Several installation strategies can help maximize energy production despite these environmental challenges:

• Enhanced weatherproofing: Use marine-grade electrical connections and ensure all junction boxes have superior IP ratings to prevent moisture infiltration
• Improved drainage design: Install panels with adequate spacing and drainage channels to prevent water pooling during heavy rains
• Regular maintenance scheduling: Implement more frequent cleaning schedules to remove organic debris and maintain optimal panel efficiency
• Strategic site preparation: Clear vegetation adequately during installation and establish ongoing landscape management to prevent shading from regrowth
• Corrosion-resistant materials: Select mounting hardware and electrical components specifically rated for high-humidity tropical environments

Overall, São Francisco presents an outstanding location for solar PV installations, with the environmental challenges being manageable through proper planning and maintenance protocols.

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 São Francisco, Pará

Seasonal solar PV output for Latitude: -1.1464, Longitude: -47.7571 (São Francisco, Pará, 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 2° North in São Francisco, Pará, Brazil

To maximize your solar PV system's energy output in São Francisco, Pará, Brazil (Lat/Long -1.1464, -47.7571) throughout the year, you should tilt your panels at an angle of 2° 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 São Francisco, Pará, 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 São Francisco, Pará, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 2° North 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	8° North in Autumn	17° 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 São Francisco, Pará, 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 São Francisco, Pará, 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 São Francisco, Pará, Brazil

Topographical Features of the São Francisco Region

The area surrounding São Francisco in the state of Pará, Brazil, is characterized by relatively flat terrain typical of the Amazon Basin's eastern margins. This region sits within the vast lowland plains that extend across much of northern Brazil, with elevations generally remaining below 200 meters above sea level. The landscape features gentle undulations and broad, shallow valleys carved by numerous waterways that eventually drain into the Amazon river system. The topography is dominated by expansive plateaus and terraced formations that have been shaped by centuries of erosion from tropical rainfall patterns. These elevated areas are interspersed with lower-lying zones where seasonal flooding occasionally occurs during peak wet periods. The terrain gradually rises toward the southeast, where it begins to transition into the foothills of the Brazilian Highlands, but remains predominantly flat to gently rolling throughout the immediate vicinity of São Francisco. Dense tropical rainforest covers much of the natural landscape, though significant portions have been cleared for agricultural development and cattle ranching over recent decades. The cleared areas reveal underlying lateritic soils typical of tropical regions, which form a relatively stable foundation despite their characteristic red coloration from iron oxide content.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for extensive solar photovoltaic installations would be the elevated plateau areas that extend primarily to the east and southeast of São Francisco. These higher elevations offer several advantages including better drainage characteristics, reduced risk of seasonal flooding, and more stable soil conditions for supporting large infrastructure projects. The cleared agricultural lands on these plateaus present particularly attractive opportunities for solar development. These areas have already been deforested and leveled to some degree, reducing the environmental impact and initial site preparation costs associated with new solar installations. The existing road networks that serve these agricultural regions would also facilitate construction and ongoing maintenance access. Areas with gentle southern-facing slopes would be especially well-suited for solar arrays, as they can be positioned to optimize sun exposure throughout the day. The relatively stable lateritic soils in these elevated zones provide adequate bearing capacity for mounting systems and access roads, while the improved drainage reduces concerns about equipment exposure to standing water during rainy periods. The northeastern sections of the region, where the terrain remains flat but sits at slightly higher elevations than the immediate floodplains, represent another promising zone for solar development. These areas combine the advantages of level ground for easier installation with sufficient elevation to avoid seasonal water accumulation issues that could affect system performance and longevity.

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.