Ariranha, São Paulo, Brazil presents a good location for year-round solar energy generation, with its tropical positioning providing consistent sunlight throughout most of the year. Located at coordinates -21.1748, -48.7812, this area experiences the typical tropical climate pattern where seasons are distinguished more by wet and dry periods rather than dramatic temperature variations.

Solar Energy Production Potential

The solar energy output at Ariranha shows strong performance across all seasons, though with some seasonal variation. Summer delivers the highest production at 6.85 kWh per day per kW of installed solar capacity, making it the peak generation period. Spring follows as the second-best season with 6.34 kWh/day per kW, while autumn produces 5.69 kWh/day per kW. Winter shows the lowest output at 4.97 kWh/day per kW, but this is still a respectable level of production. For optimal year-round energy generation, solar panels should be installed at a fixed tilt angle of 20 degrees facing north. This angle maximizes total annual production by accounting for the sun's path throughout the year and the location's specific latitude.

Environmental and Weather Challenges

The tropical climate at Ariranha presents several factors that could impact solar panel performance. The wet season brings heavy rainfall and increased humidity, which can reduce solar output through cloud cover and atmospheric moisture. However, the frequent rains also provide a natural cleaning mechanism for solar panels, helping to wash away dust and debris. High humidity levels throughout much of the year can create conditions for mold, algae, or mineral deposits to form on panel surfaces. The intense tropical sun, while beneficial for energy production, can also accelerate the degradation of certain panel materials and mounting systems over time.

Preventative Measures for Optimal Performance

Several installation strategies can help maximize solar energy production at this location:

• Install panels with adequate ventilation space underneath to promote air circulation and prevent overheating
• Use corrosion-resistant mounting hardware designed for high-humidity environments
• Ensure proper drainage around the installation area to prevent water accumulation
• Select panels with anti-reflective and self-cleaning coatings when possible
• Design the system with easy access for periodic cleaning and maintenance

Regular maintenance becomes particularly important in this tropical environment. While the natural rainfall helps keep panels clean, periodic professional cleaning may be necessary during drier periods or when organic growth occurs. The consistent year-round production potential makes Ariranha a viable location for solar energy, provided that proper installation techniques and maintenance schedules are followed to address the tropical climate challenges.

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 Ariranha

Seasonal solar PV output for Latitude: -21.1748, Longitude: -48.7812 (Ariranha, 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 20° North in Ariranha, Brazil

To maximize your solar PV system's energy output in Ariranha, Brazil (Lat/Long -21.1748, -48.7812) throughout the year, you should tilt your panels at an angle of 20° 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 Ariranha, 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 Ariranha, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 20° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
5° North in Summer	27° North in Autumn	37° North in Winter	15° 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 Ariranha, 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 Ariranha, 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 Ariranha, Brazil

Topographical Features of the Ariranha Region

The area surrounding Ariranha in São Paulo state, Brazil is characterized by relatively gentle topography typical of the Brazilian Plateau's interior regions. This landscape features rolling hills and broad valleys with moderate elevation changes, creating a terrain that is neither mountainous nor completely flat. The elevation in this region typically ranges from approximately 500 to 700 meters above sea level, with gradual slopes that rarely exceed 15 degrees. The local topography is dominated by sedimentary formations that have been weathered over millions of years, resulting in well-drained soils and stable ground conditions. Small streams and seasonal watercourses wind through the valleys, creating natural drainage patterns that help prevent water accumulation during the rainy season. The landscape is interspersed with remnants of cerrado vegetation on higher ground and riparian forests along waterways.

Agricultural Land Use and Terrain Suitability

Much of the surrounding area has been converted to agricultural use, particularly sugarcane cultivation and cattle pasture, which demonstrates the land's accessibility and relatively flat nature. These agricultural areas typically occupy the gentler slopes and valley floors where mechanized farming equipment can operate efficiently. The presence of established agricultural infrastructure, including access roads and cleared land, indicates that the terrain is suitable for large-scale development projects. The region's geological stability is enhanced by its position on ancient crystalline basement rocks overlain by sedimentary deposits. This foundation provides excellent load-bearing capacity for heavy installations while minimizing concerns about ground subsidence or geological hazards that could affect long-term infrastructure projects.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for extensive solar photovoltaic installations would be the broad, gently sloping plateaus and mesa-like formations that extend to the north and east of Ariranha. These areas offer several key advantages including minimal grading requirements, excellent natural drainage, and reduced shading concerns due to their elevated positions relative to surrounding valleys. Particularly promising are the expansive agricultural areas on south-facing slopes with gradients between 2 and 8 degrees. These locations provide optimal positioning for solar panel arrays while maintaining sufficient slope for natural water runoff. The existing cleared agricultural land reduces environmental impact concerns and development costs associated with vegetation removal. The flatter valley floors, while seemingly attractive due to their level nature, are less ideal due to potential drainage issues during heavy rainfall periods and increased risk of morning fog formation. Additionally, these lower-lying areas may experience more frequent temperature inversions that could affect equipment performance. Areas with established road access, particularly those near state highways connecting to larger urban centers, would be most practical for large-scale solar development. The relatively stable terrain throughout the region means that construction and maintenance vehicle access can be established with minimal earthwork, making previously agricultural land particularly attractive for solar development projects.

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!

Citation Guide

Article Details for Citation

Tell Us About Your Work

We love seeing how our research helps others! If you've cited this article in your work, we'd be delighted to hear about it. Drop us a line via our Contact Us page or on X, to share where you've used our information - we may feature a link to your work on our site. This helps create a network of valuable resources for others in the solar energy community and helps us understand how our research is contributing to the field. Plus, we occasionally highlight exceptional works that reference our research on our social media channels.

Feeling generous?

Share this with your friends!

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.