Boca do Acre Municipality in Brazil presents a favorable location for year-round solar energy generation, with consistent performance across all seasons due to its tropical climate. The location produces reliable electricity output throughout the year, ranging from 4.88 to 5.68 kWh per day per kW of installed solar capacity.
Seasonal Solar Performance
The solar energy production at this location shows interesting seasonal variation. Spring emerges as the most productive season, generating 5.68 kWh per day per kW of installed solar panels. Winter follows closely with 5.27 kWh per day, while summer and autumn show slightly lower but still solid production at 4.92 and 4.88 kWh per day respectively. This pattern suggests that the dry season months (typically spring and winter in this region) offer optimal conditions for solar generation, while the wet season months show marginally reduced output. The relatively small variation between seasons demonstrates the location's reliability for consistent solar energy production throughout the year.Optimal Panel Installation
For maximum year-round energy production at Boca do Acre Municipality, solar panels should be installed at a fixed tilt angle of 9 degrees North. This relatively shallow angle reflects the location's proximity to the equator and ensures optimal sun exposure across all seasons.Environmental and Weather Challenges
Several local factors could potentially impact solar energy production at this tropical location:- High humidity and frequent rainfall during wet seasons can reduce panel efficiency and create maintenance challenges
- Dense cloud cover during rainy periods may temporarily reduce solar irradiance
- Tropical vegetation grows rapidly and could create shading issues if not properly managed
- Dust and organic debris accumulation on panels due to the humid environment
Preventative Measures for Enhanced Production
To maximize solar energy output despite these challenges, several installation strategies should be considered:- Install panels with adequate spacing and ventilation to prevent moisture buildup and allow for proper air circulation
- Implement regular cleaning schedules to remove dust, pollen, and organic matter that accumulate more quickly in tropical climates
- Use high-quality mounting systems with corrosion-resistant materials designed for humid environments
- Maintain clear vegetation management around solar installations to prevent shading from rapidly growing tropical plants
- Consider slightly steeper mounting angles than the calculated optimum to promote natural cleaning from rainfall
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 Boca Do Acre Municipality
Seasonal solar PV output for Latitude: -8.5506, Longitude: -68.0346 (Boca Do Acre Municipality, 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 9° North in Boca Do Acre Municipality, Brazil
To maximize your solar PV system's energy output in Boca Do Acre Municipality, Brazil (Lat/Long -8.5506, -68.0346) throughout the year, you should tilt your panels at an angle of 9° 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 Boca Do Acre Municipality, 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 Boca Do Acre Municipality, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 9° North tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 7° South in Summer | 15° North in Autumn | 24° North in Winter | 3° 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 Boca Do Acre Municipality, 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 Boca Do Acre Municipality, 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 Boca Do Acre Municipality, Brazil
Topographical Features of Boca do Acre Region
The topography surrounding Boca do Acre Municipality in the state of Acre, Brazil, is characterized by relatively flat to gently rolling terrain typical of the western Amazon Basin. This region sits within the broader Amazonian lowlands, where elevations generally remain below 200 meters above sea level. The landscape consists primarily of extensive floodplains and slightly elevated areas known as terra firme, which remain above seasonal flood levels. The municipality lies within the Purus River basin, where the terrain has been shaped by centuries of river meandering and sediment deposition. This has created a mosaic of low-lying areas that experience seasonal flooding during the wet season, interspersed with slightly higher ground that remains dry year-round. The topographical variation across the region is generally subtle, with gradual slopes rather than steep inclines or dramatic elevation changes. Dense Amazon rainforest covers much of the natural landscape, though human activities have created clearings for agriculture, cattle ranching, and settlements. The forest canopy creates significant shading across much of the region, while cleared areas expose the underlying soil and allow direct sunlight to reach the ground surface.Optimal Areas for Large-Scale Solar Development
The most suitable locations for large-scale solar photovoltaic installations in the Boca do Acre region would be the elevated terra firme areas that remain above seasonal flood zones. These higher elevations, though still relatively modest, provide stable ground conditions and avoid the complications associated with periodic inundation that affects lower-lying areas near the Purus River and its tributaries. Areas that have already been cleared of forest cover present the most immediate opportunities for solar development, as they eliminate the need for additional deforestation. Existing agricultural lands and cattle pastures offer particularly promising sites, especially those on slightly elevated terrain with good drainage characteristics. These locations typically feature relatively level ground that would minimize the need for extensive site preparation and grading. The region's flat to gently rolling topography generally favors solar installation from an engineering perspective, as it reduces construction complexity and allows for efficient panel arrangement. Areas with southern exposure and minimal shading from remaining forest edges would be preferable, though the generally open nature of cleared land in the region provides flexibility in panel orientation and spacing. Transportation accessibility represents another crucial factor in site selection. Areas with existing road access or proximity to the BR-317 highway and other regional transportation networks would be more practical for large-scale solar development, reducing the infrastructure investment required to support construction and ongoing maintenance activities.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: Monday 21st of July 2025
Last Updated: Thursday 7th of August 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.




