Rio Acima, Minas Gerais, Brazil, located in the tropical zone at coordinates -20.117, -43.7654, presents a highly favorable location for year-round solar photovoltaic energy generation. The consistent tropical sunlight throughout most of the year makes this location particularly well-suited for solar installations.

Seasonal Solar Performance

The solar energy output data reveals strong performance across all seasons. Summer delivers the highest production at 5.99 kWh per day per kW of installed capacity, making it the peak generation period. Spring and autumn show nearly identical performance at 5.47 kWh and 5.44 kWh respectively, demonstrating excellent shoulder-season production. Even winter, the lowest-performing season, still generates a respectable 4.84 kWh per day per kW. This seasonal variation of only about 1.15 kWh between peak and minimum production represents remarkably stable year-round performance, with winter still achieving approximately 81% of summer output levels.

Optimal Installation Configuration

For maximum year-round energy production at Rio Acima, Minas Gerais, solar panels should be installed at a fixed tilt angle of 19 degrees facing north. This angle has been calculated to optimize total annual solar collection by accounting for the sun's varying position throughout the year and weighting for actual solar irradiance potential.

Environmental and Weather Considerations

Several local factors could potentially impact solar production efficiency at this tropical location:

• Seasonal rainfall patterns: Rio Acima experiences distinct wet and dry seasons typical of tropical climates, with heavy rainfall during wet periods potentially reducing solar irradiance
• High humidity levels: Tropical humidity can lead to moisture buildup and condensation on panel surfaces
• Dust and debris accumulation: Dry season conditions may result in dust settling on panels, reducing light transmission
• Vegetation growth: Fast-growing tropical vegetation could create shading issues if not properly managed

Preventative Measures for Optimal Performance

To maximize energy production despite these challenges, several installation strategies should be implemented: Regular cleaning schedules become essential, particularly during transitions between wet and dry seasons. Installing panels with adequate spacing and ventilation helps prevent moisture-related issues and allows for proper airflow. Automated cleaning systems or easy-access designs for manual cleaning can address dust and debris accumulation effectively. Proper site preparation includes clearing vegetation and establishing maintenance zones around installations to prevent future shading. Installing drainage systems ensures water doesn't pool around ground-mounted systems during heavy rainfall periods. Quality mounting hardware designed for tropical conditions, including corrosion-resistant materials, helps maintain structural integrity in high-humidity environments. Anti-reflective coatings and hydrophobic treatments on panels can further enhance performance by reducing soiling and improving water runoff. Overall, Rio Acima represents an excellent location for solar energy generation, with the tropical climate providing consistent solar resources year-round, requiring only standard tropical-climate installation practices to achieve optimal performance.

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 Rio Acima

Seasonal solar PV output for Latitude: -20.117, Longitude: -43.7654 (Rio Acima, 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 19° North in Rio Acima, Brazil

To maximize your solar PV system's energy output in Rio Acima, Brazil (Lat/Long -20.117, -43.7654) throughout the year, you should tilt your panels at an angle of 19° 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 Rio Acima, 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 Rio Acima, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 19° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
4° North in Summer	26° North in Autumn	36° 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 Rio Acima, 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 Rio Acima, 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 Rio Acima, Brazil

Topographical Features of Rio Acima

Rio Acima sits within the Brazilian Highlands, specifically in the southeastern region of Minas Gerais state. The terrain around this municipality is characterized by rolling hills and moderate elevations, typical of the ancient geological formations that define much of the interior of Minas Gerais. The landscape features a series of undulating ridges and valleys, with elevations generally ranging from approximately 800 to 1,200 meters above sea level. The region's topography is dominated by weathered crystalline rocks and sedimentary formations that have been shaped by millions of years of erosion. These geological processes have created a relatively gentle terrain with gradual slopes rather than steep mountainous peaks. The area experiences a subtropical highland climate, with the elevation contributing to more moderate temperatures than would be expected at this latitude.

Drainage and Water Features

The local drainage system consists of several small streams and tributaries that flow toward larger river systems in the region. These waterways have carved shallow valleys through the landscape, creating a network of gentle depressions between the higher ground. The presence of these water features indicates good natural drainage, which is beneficial for land development and infrastructure projects.

Vegetation and Land Use Patterns

The natural vegetation in the area transitions between Atlantic Forest remnants and Cerrado savanna characteristics, though much of the original forest cover has been modified by agricultural activities and urban development. The terrain supports a mix of pastureland, small-scale agriculture, and scattered forest patches. The relatively open landscape and moderate topography have made the region accessible for various forms of development over the centuries.

Optimal Areas for Large-Scale Solar Development

For large-scale solar photovoltaic installations, the most suitable areas around Rio Acima would be the gently sloping hillsides and plateau areas that face north, northeast, or northwest. These orientations provide optimal solar exposure throughout the day while the moderate slopes offer natural drainage and reduce the risk of water accumulation around solar equipment. The elevated plateau areas, particularly those at higher elevations within the 1,000 to 1,200 meter range, present excellent opportunities for solar development. These locations typically have fewer obstructions from surrounding terrain and benefit from clearer atmospheric conditions due to their elevation. The consistent topography across these higher areas allows for efficient layout of solar arrays with minimal grading requirements. Areas with slopes between 5 and 15 degrees are particularly well-suited, as they provide natural optimization for solar panel positioning while remaining gentle enough for cost-effective construction and maintenance access. The existing agricultural lands on these moderate slopes could be readily converted to solar installations, especially areas currently used for extensive cattle grazing. The region's stable geological foundation, composed of ancient crystalline rocks, provides excellent support for large-scale solar installations. This geological stability reduces concerns about ground subsidence or shifting that might affect solar array alignment over time. Additionally, the well-drained soils typical of the area minimize issues with water pooling that could affect equipment longevity. Transportation access is another crucial factor, and the areas closest to existing road networks while maintaining optimal topographical characteristics would be most economically viable. The gentle terrain throughout much of the region means that access roads can be constructed without significant earthworks, keeping development costs reasonable for large-scale 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.