Santana do Araguaia, Brazil is an excellent location for year-round solar energy generation. Located in the tropical region of Brazil, this area benefits from consistent sunlight throughout the year, with seasonal variations driven more by wet and dry periods than by the dramatic daylight changes seen in temperate regions.

Solar Energy Production Potential

The solar energy output at Santana do Araguaia shows strong performance across all seasons. Winter emerges as the peak season for solar generation, producing 6.44kWh per day for each kilowatt of installed solar capacity. Spring follows as the second-best season with 5.82kWh/day, while autumn generates 5.55kWh/day. Summer, despite being the warmest season, produces the lowest output at 5.16kWh/day per kilowatt installed. This seasonal pattern is typical for tropical locations, where the drier winter months often provide clearer skies and less atmospheric moisture, resulting in better solar irradiance. The difference between the best and worst performing seasons is relatively modest, making this location highly suitable for consistent year-round solar energy production.

Optimal Panel Configuration

For maximum energy production at this location, solar panels should be installed at a fixed tilt angle of 10 degrees facing north. This relatively shallow angle is optimal for the tropical latitude and helps capture the maximum amount of solar energy throughout the year.

Environmental and Weather Challenges

Several environmental factors in the Santana do Araguaia region could potentially impact solar energy production:

• High humidity and moisture: The tropical climate brings elevated humidity levels, especially during wet seasons, which can reduce panel efficiency and cause moisture-related electrical issues
• Heavy rainfall: Intense tropical downpours during wet seasons can temporarily reduce solar output and may cause water damage if systems aren't properly sealed
• Dust and particulate matter: Dry seasons can bring dust accumulation on panel surfaces, reducing light transmission and energy output
• Extreme heat: High ambient temperatures can reduce solar panel efficiency, as photovoltaic cells perform less efficiently as temperatures rise
• Potential for severe weather: Tropical storms or strong winds could pose risks to solar installations

Preventative Measures for Better Performance

To maximize solar energy production despite these challenges, several installation strategies should be considered: Moisture Protection: Use high-quality waterproof sealing and corrosion-resistant mounting hardware. Ensure proper drainage around installations and consider panels with enhanced moisture resistance ratings suitable for tropical climates. Ventilation and Cooling: Install panels with adequate spacing from roof surfaces to allow air circulation underneath, helping to keep operating temperatures lower. This improves efficiency during hot periods. Regular Maintenance: Implement a cleaning schedule to remove dust and debris, particularly important during dry seasons. Consider installing monitoring systems to track performance drops that might indicate cleaning needs. Robust Mounting Systems: Use heavy-duty mounting systems designed to withstand high winds and potential storm conditions. Ensure structural integrity can handle both normal loads and extreme weather events. Quality Components: Select solar panels and inverters specifically rated for tropical conditions, with enhanced temperature tolerance and humidity resistance. This reduces long-term degradation and maintains better performance over time. Despite these environmental considerations, Santana do Araguaia remains a very favorable location for solar energy generation, with the potential challenges being manageable through proper system design and maintenance practices.

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 Santana Do Araguaia

Seasonal solar PV output for Latitude: -9.1387, Longitude: -50.673 (Santana Do Araguaia, 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 10° North in Santana Do Araguaia, Brazil

To maximize your solar PV system's energy output in Santana Do Araguaia, Brazil (Lat/Long -9.1387, -50.673) throughout the year, you should tilt your panels at an angle of 10° 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 Santana Do Araguaia, 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 Santana Do Araguaia, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 10° 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	16° North in Autumn	25° North in Winter	4° 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 Santana Do Araguaia, 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 Santana Do Araguaia, 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 Santana Do Araguaia, Brazil

Regional Topography and Landscape

Santana do Araguaia sits in the southeastern portion of Pará state, positioned within the vast transition zone between the Amazon rainforest and the Brazilian Cerrado savanna. This region features predominantly flat to gently rolling terrain, with elevations typically ranging from 200 to 400 meters above sea level. The landscape is characterized by broad, open plains interspersed with low hills and shallow valleys that drain toward the Araguaia River system. The area represents part of the Brazilian Shield's ancient geological foundation, which has been weathered over millions of years into relatively stable, low-relief terrain. Large portions of the original forest cover have been converted to agricultural land, particularly for cattle ranching and soybean cultivation, creating extensive open areas with minimal topographical obstacles.

Climate and Environmental Conditions

The region experiences a tropical savanna climate with distinct wet and dry seasons. The dry season typically extends from May through September, providing extended periods of clear skies and minimal cloud cover. During these months, the landscape receives intense solar radiation with very little atmospheric interference. The wet season brings significant rainfall and increased cloud cover, though even during this period, there are often clear morning periods before afternoon thunderstorms develop. The relatively stable atmospheric conditions and minimal air pollution in this rural region contribute to excellent solar irradiance potential throughout much of the year.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations would be found in the converted agricultural areas and natural savanna regions surrounding Santana do Araguaia. These areas offer several key advantages including flat to gently sloping terrain that requires minimal grading and site preparation, reducing construction costs significantly. The extensive cattle ranching areas provide particularly attractive opportunities, as these lands are already cleared, relatively flat, and often underutilized from an economic perspective. Many of these properties span thousands of hectares, offering the scale necessary for utility-grade solar installations while maintaining access to existing rural road networks. Areas to the south and southwest of the town center present especially favorable conditions, where the terrain becomes increasingly flat and open as it approaches the Cerrado biome. These locations benefit from excellent drainage characteristics, reducing concerns about seasonal flooding while maintaining stable soil conditions suitable for solar panel mounting systems. The proximity to existing electrical transmission infrastructure along major transportation corridors also makes certain areas more attractive for development. Properties located near the BR-158 highway corridor, which runs north-south through the region, would benefit from easier access for construction and maintenance activities, as well as potential connections to the regional electrical grid. Former soybean cultivation areas that have been left fallow also represent excellent opportunities, as these lands are already cleared, leveled, and accessible by existing farm roads. The agricultural infrastructure in these areas often includes basic electrical connections that could potentially be upgraded to accommodate solar installations.

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.