Marcelino Ramos, Rio Grande do Sul, Brazil, located in the Southern Sub Tropics, presents a moderately favorable location for year-round solar energy generation, though with notable seasonal variations that potential solar installers should carefully consider.
Seasonal Solar Performance
The solar energy output at this location varies significantly throughout the year. Summer provides the strongest performance at 7.01 kWh per day per kW of installed solar capacity, making it the ideal season for solar generation. Spring follows as the second-best performing season with 5.93 kWh per day per kW, while autumn drops to 4.95 kWh per day per kW. Winter presents the most challenging conditions with only 3.68 kWh per day per kW of installed capacity. This seasonal pattern means that solar installations at Marcelino Ramos will generate nearly twice as much energy during peak summer months compared to winter. The location experiences its best solar generation period from approximately October through March, with December and January typically being the most productive months.Optimal Panel Configuration
For maximum year-round energy production at this location, solar panels should be installed at a fixed tilt angle of 24 degrees facing north. This specific angle has been calculated to optimize total annual solar output by accounting for the sun's changing position throughout the year and the Earth's elliptical orbit pattern.Environmental and Weather Factors
Several environmental factors at Marcelino Ramos could potentially impact solar energy production and should be addressed during installation planning:- Subtropical humidity and moisture: The Southern Sub Tropical climate brings high humidity levels that can lead to moisture accumulation on panels, reducing their efficiency
- Seasonal weather patterns: The region may experience heavy rainfall periods and potential hail storms during certain seasons
- Temperature fluctuations: Significant seasonal temperature variations can affect panel performance and longevity
- Vegetation growth: The subtropical climate supports rapid plant growth that could create shading issues over time
Preventative Installation Measures
To maximize solar energy production despite these environmental challenges, several preventative measures should be implemented:- Enhanced drainage systems: Install panels with adequate spacing and drainage to prevent water accumulation and allow proper air circulation
- Robust mounting systems: Use reinforced mounting hardware designed to withstand potential hail and strong wind events common in subtropical regions
- Anti-reflective coatings: Select panels with specialized coatings that maintain performance in high-humidity conditions
- Strategic placement: Position installations away from areas where vegetation could grow and create shading problems
- Regular maintenance access: Design the installation layout to allow easy access for cleaning and maintenance, particularly important in humid climates where debris and organic matter accumulate more quickly
Note: The Southern Sub Tropics extend from -23.5° latitude South down to -35° latitude.
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 Marcelino Ramos
Seasonal solar PV output for Latitude: -27.4722, Longitude: -51.9448 (Marcelino Ramos, 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 24° North in Marcelino Ramos, Brazil
To maximize your solar PV system's energy output in Marcelino Ramos, Brazil (Lat/Long -27.4722, -51.9448) throughout the year, you should tilt your panels at an angle of 24° 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 Marcelino Ramos, 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 Marcelino Ramos, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 24° North tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 11° North in Summer | 33° North in Autumn | 43° North in Winter | 20° 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 Marcelino Ramos, 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 Marcelino Ramos, 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 Marcelino Ramos, Brazil
Topographical Features of Marcelino Ramos
Marcelino Ramos sits in the northern region of Rio Grande do Sul state, positioned along the banks of the Uruguay River which forms the border between Brazil and Argentina. The town is located within the Brazilian Highlands region, characterized by rolling hills and moderate elevation changes typical of the southern Brazilian plateau. The landscape around Marcelino Ramos features undulating terrain with gentle slopes and valleys carved by tributaries of the Uruguay River system.
The immediate area displays a mix of agricultural lands, pastures, and remnant Atlantic Forest vegetation. The topography consists primarily of sedimentary rock formations with fertile soils that have been shaped by centuries of river action and erosion. Elevation in the region ranges from approximately 200 to 400 meters above sea level, with the river valley representing the lowest points and the surrounding hills forming modest ridges.
The Uruguay River creates a significant geographical feature, flowing in a generally westward direction through this section of its course. The river valley has carved a relatively wide floodplain, while the surrounding uplands present more stable, well-drained surfaces. The terrain is generally accessible, with existing road networks connecting the scattered rural communities and agricultural operations throughout the region.
Optimal Areas for Large-Scale Solar Development
The most suitable locations for large-scale solar photovoltaic installations around Marcelino Ramos would be the elevated plateaus and gentle hillsides that extend north and east of the town. These areas offer several advantages including stable ground conditions, good drainage, and relatively flat to gently sloping terrain that would minimize grading requirements and installation costs.
The upland areas situated away from the immediate river valley would be particularly well-suited for solar development. These locations typically feature less productive agricultural soils compared to the fertile river bottomlands, making them more available for alternative land uses. The elevated positions also provide better air circulation, which can help maintain optimal operating temperatures for solar panels.
Areas with southern and southeastern exposures on the gentle slopes would be ideal, as they would receive optimal solar radiation throughout the day. The relatively open landscape, with scattered trees rather than dense forest cover, would require minimal clearing for solar installations. Additionally, the existing rural road network would facilitate construction access and ongoing maintenance operations.
The region's proximity to existing electrical infrastructure, including transmission lines that serve the local communities and connect to the broader regional grid, would be advantageous for large-scale solar projects. The stable geological conditions of the sedimentary bedrock provide a solid foundation for mounting systems, while the moderate topography would allow for efficient panel layout and spacing.
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 14th of July 2025
Last Updated: Wednesday 6th 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.




