Tupi Paulista, São Paulo, Brazil, offers a promising location for solar energy generation throughout the year. Situated in the tropics, this area benefits from consistent sunlight and experiences seasons characterized more by wet and dry periods than temperature fluctuations.
Seasonal Solar Performance
The solar potential in Tupi Paulista varies across seasons, with summer being the most productive period. During summer months, each kilowatt of installed solar capacity can generate an impressive 6.98 kWh of electricity per day. Spring follows closely, with a daily output of 6.35 kWh per kW installed. Autumn sees a slight decrease in production, yielding 5.82 kWh per day for each kW of solar panels. Winter, while still productive, experiences the lowest output at 4.87 kWh per day per kW installed. However, even this reduced winter performance is considered good for solar energy generation.Optimal Panel Placement
To maximize year-round solar production in Tupi Paulista, São Paulo, fixed solar panels should be tilted at a 20-degree angle facing North. This orientation ensures optimal exposure to sunlight throughout the year, accounting for the Earth's elliptical orbit and the location's specific latitude and longitude.Environmental Considerations
While Tupi Paulista generally offers favorable conditions for solar energy production, there are a few environmental factors to consider: 1. Rainfall: The region experiences a wet season, typically from October to March. Heavy rain can temporarily reduce solar panel efficiency. 2. Dust and pollen: Agricultural activities in the area may lead to increased dust and pollen in the air, which can accumulate on solar panels. To mitigate these factors, regular cleaning and maintenance of solar panels is crucial. Installing panels at the recommended angle also helps with natural cleaning during rainfall. Additionally, considering a tracking system that adjusts panel orientation throughout the day could further enhance energy production, especially during the less productive winter months. Overall, Tupi Paulista presents an ideal location for solar PV installations, with consistent sunlight and good energy production potential throughout the year. With proper installation and maintenance, solar energy systems in this area can provide a reliable and sustainable source of electricity.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 Tupi Paulista
Seasonal solar PV output for Latitude: -21.3919, Longitude: -51.5843 (Tupi Paulista, 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 Tupi Paulista, Brazil
To maximize your solar PV system's energy output in Tupi Paulista, Brazil (Lat/Long -21.3919, -51.5843) 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 Tupi Paulista, 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 Tupi Paulista, 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 | 14° 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 Tupi Paulista, 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 Tupi Paulista, Brazil.
Our calculation method
- Solar Position:
We determine the Sun's position on the Winter solstice using the location's latitude and solar declination. - Shadow Projection:
We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle. - 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 Tupi Paulista, Brazil
The topography around Tupi Paulista, Brazil, is characterized by gently rolling hills and expansive plateaus typical of the western São Paulo state. This region, known as the Planalto Ocidental Paulista, features a landscape that gradually transitions from the more rugged terrain of the state's interior to the flatter areas approaching the Paraná River basin. The area surrounding Tupi Paulista is predominantly rural, with a mix of agricultural lands and patches of remaining native vegetation. The terrain is generally undulating, with modest elevation changes that create a patchwork of shallow valleys and low ridges. The soil in this region is predominantly red latosol, which is common in tropical and subtropical areas and is known for its deep, well-drained nature.
Suitability for Large-Scale Solar PV
When considering areas nearby that would be most suited to large-scale solar photovoltaic (PV) installations, several factors come into play. The gently sloping terrain around Tupi Paulista offers numerous advantages for solar energy development. The gradual inclines provide natural drainage while minimizing the need for extensive land grading, which can be costly and environmentally disruptive. The most suitable areas for large-scale solar PV would likely be found on the broader, flatter sections of the plateaus. These locations offer expansive, unobstructed spaces that can accommodate large arrays of solar panels. The slight inclination of these areas can actually be beneficial, as it allows for optimal panel orientation towards the sun without requiring complex mounting systems. Areas to the north and west of Tupi Paulista may be particularly well-suited for solar installations. These directions tend to have fewer obstructions and potentially more consistent exposure to sunlight throughout the day. Additionally, regions that have already been cleared for agriculture might be prime candidates for solar development, as they offer large, open spaces with existing access roads and minimal need for land clearing. It's important to note that while the topography is generally favorable, other factors such as proximity to power transmission lines, local environmental considerations, and land ownership patterns would also play crucial roles in determining the most suitable locations for large-scale solar PV projects in the vicinity of Tupi Paulista.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
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Tuesday 25th of March 2025
Last Updated: Monday 21st of July 2025
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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.
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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.




