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Graph of hourly avg kWh electricity output per kW of Solar PV installed in Cruzeiro Do Sul Municipality, Brazil (by season)

Cruzeiro do Sul Municipality in Brazil presents a moderately favorable location for year-round solar energy generation. Located in the tropical region where consistent sunlight is available throughout most of the year, this area experiences seasonal variations characterized more by wet and dry periods than traditional temperature-based seasons.

Solar Energy Production Potential

The solar energy output at this location shows promising consistency across all seasons, with some notable seasonal variations. Winter emerges as the strongest season for solar generation, producing 5.23 kWh per day per kW of installed solar capacity. Spring offers the highest production potential at 5.66 kWh per day per kW, making it the optimal time for solar energy generation. Summer provides 4.94 kWh per day per kW, while autumn shows slightly lower output at 4.76 kWh per day per kW. The relatively small variation between seasons indicates reliable year-round solar potential, with spring and winter being particularly productive periods. For optimal energy capture, fixed solar panels at this location should be tilted at 8 degrees toward the north. This angle has been calculated to maximize total year-round solar production by accounting for the sun's path throughout the year and weighting optimal daily angles by solar irradiance potential.

Environmental and Weather Challenges

Several significant factors could impact solar energy production in Cruzeiro do Sul Municipality:
  • Heavy rainfall and cloud cover during wet seasons can substantially reduce solar irradiance
  • High humidity levels typical of tropical climates may affect panel efficiency and promote corrosion
  • Dense vegetation and forest canopy common in this Amazonian region can create shading issues
  • Dust and organic debris accumulation from the surrounding forest environment

Preventative Measures for Enhanced Production

To maximize solar energy output despite these challenges, several installation strategies should be implemented. Elevated mounting systems can help panels rise above local vegetation and improve air circulation around the equipment, reducing humidity-related issues. Regular cleaning schedules become particularly important in this environment to remove accumulated dust, pollen, and organic matter that can significantly reduce panel efficiency. Installing panels with anti-reflective coatings and corrosion-resistant materials will help combat the effects of high humidity and frequent precipitation. Proper drainage systems around solar installations will prevent water pooling during heavy rains, while strategic site selection away from dense forest canopy will minimize shading throughout the day. Additionally, using micro-inverters or power optimizers can help maintain system performance even when individual panels experience temporary shading or reduced efficiency. Despite these environmental challenges, the consistent solar potential throughout the year makes Cruzeiro do Sul Municipality a viable location for solar energy projects, provided that appropriate installation and maintenance practices are followed.

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 Cruzeiro Do Sul Municipality

Seasonal solar PV output for Latitude: -8.0125, Longitude: -72.9297 (Cruzeiro Do Sul 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:

Summer
Average 4.94kWh/day in Summer.
Autumn
Average 4.76kWh/day in Autumn.
Winter
Average 5.23kWh/day in Winter.
Spring
Average 5.66kWh/day in Spring.

 

Ideally tilt fixed solar panels 8° North in Cruzeiro Do Sul Municipality, Brazil

To maximize your solar PV system's energy output in Cruzeiro Do Sul Municipality, Brazil (Lat/Long -8.0125, -72.9297) throughout the year, you should tilt your panels at an angle of 8° 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.

The sun
At Latitude: -8.0125, Longitude: -72.9297, the ideal angle to tilt panels is 8° North

Seasonally adjusted solar panel tilt angles for Cruzeiro Do Sul 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 Cruzeiro Do Sul Municipality, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 8° North tilt angle throughout the year.

Overall Best Summer Angle Overall Best Autumn Angle Overall Best Winter Angle Overall Best Spring Angle
8° South in Summer 15° North in Autumn 24° North in Winter 2° North in Spring

Assuming you can modify the tilt angle of your solar PV panels throughout the year, you can optimize your solar generation in Cruzeiro Do Sul Municipality, Brazil as follows: In Summer, set the angle of your panels to 8° facing South. In Autumn, tilt panels to 15° facing North for maximum generation. During Winter, adjust your solar panels to a 24° angle towards the North for optimal energy production. Lastly, in Spring, position your panels at a 2° angle facing North to capture the most solar energy in Cruzeiro Do Sul Municipality, Brazil.

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 Cruzeiro Do Sul 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 Cruzeiro Do Sul Municipality, 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.






Please enter information above to calculate panel spacing.

Topography for solar PV around Cruzeiro Do Sul Municipality, Brazil

Topographical Features of the Cruzeiro do Sul Region

Cruzeiro do Sul Municipality sits in the heart of the western Amazon Basin in Acre state, Brazil, where the landscape is characterized by relatively flat to gently rolling terrain. The region lies within the vast Amazonian lowlands, with elevations typically ranging from 150 to 300 meters above sea level. This area forms part of the upper Juruá River basin, where the topography has been shaped by centuries of river meandering and sediment deposition.

The terrain around Cruzeiro do Sul consists primarily of floodplains, river terraces, and low hills covered in dense tropical rainforest. These gentle undulations create a mosaic of slightly elevated areas interspersed with seasonal wetlands and permanent water bodies. The Juruá River and its numerous tributaries have carved shallow valleys through the landscape, creating natural drainage patterns that influence the local microtopography.

Much of the surrounding area features terra firme forest on well-drained soils, along with várzea floodplain forests that experience seasonal inundation. The region's topography includes scattered areas of slightly higher ground that remain above flood levels year-round, as well as lower-lying zones that may experience temporary flooding during peak rainfall periods.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations in the Cruzeiro do Sul vicinity would be the elevated terra firme areas that maintain good drainage throughout the year. These slightly higher elevations, typically found on river terraces and low hills, offer stable ground conditions and reduced risk of seasonal flooding that could damage solar infrastructure.

Areas that have already experienced some level of deforestation or conversion to agricultural use would present the most practical opportunities for solar development, as they would require minimal additional forest clearing. Existing cattle pastures and agricultural lands on well-drained soils represent the most environmentally and economically viable options for solar installations.

The gently sloping terrain found on river terraces provides ideal conditions for solar panel placement, offering natural drainage while maintaining relatively flat surfaces that minimize grading requirements. These areas typically feature stable soils that can support the foundation requirements of large solar arrays without extensive ground preparation.

Locations with good road access and proximity to existing electrical infrastructure would be particularly advantageous for solar development. Areas near the BR-364 highway corridor or other established transportation routes would reduce construction and maintenance costs while facilitating grid connection 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!

Citation Guide

Article Details for Citation

Article: Solar PV Analysis of Cruzeiro Do Sul Municipality, Brazil
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Sunday 20th of July 2025
Last Updated: Thursday 7th of August 2025

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Compare this location to others worldwide for solar PV potential

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