Terra de Areia, 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 location shows strong summer performance at 6.87 kWh per day per kW of installed solar capacity, making December through February the prime months for solar energy generation. Spring follows as the second-best season with 5.67 kWh per day per kW, indicating that September through November also offer excellent solar production opportunities. However, the location experiences significant seasonal decline during cooler months. Autumn production drops to 4.48 kWh per day per kW, while winter shows the lowest output at just 3.28 kWh per day per kW. This represents a substantial difference of more than double the energy production between peak summer and winter months. For optimal year-round energy capture at this location, solar panels should be installed at a fixed tilt angle of 26 degrees facing North. This angle has been calculated to maximize total annual solar output by accounting for the sun's varying position throughout the year and weighting for optimal energy production across all seasons.

Environmental and Weather Considerations

Several local factors could potentially impact solar energy production in Terra de Areia:

• Coastal proximity and humidity: Being located near the Atlantic coast in Rio Grande do Sul, the area experiences high humidity levels that can lead to increased dust and salt accumulation on solar panels, reducing their efficiency over time.
• Subtropical weather patterns: The region's subtropical climate brings frequent rainfall and occasional severe weather events, including strong winds and hailstorms that could damage solar installations.
• Seasonal cloud cover: The significant drop in winter solar production suggests increased cloud cover during cooler months, which is typical for this climate zone.

Preventative Measures for Optimal Performance

To maximize solar energy production despite these challenges, several installation strategies should be considered:

• Regular cleaning schedules: Implement monthly panel cleaning to remove salt deposits, dust, and organic matter that accumulate due to coastal humidity.
• Robust mounting systems: Install heavy-duty mounting hardware designed to withstand high winds and potential hail damage common in subtropical regions.
• Proper drainage design: Ensure installation allows for adequate water runoff during heavy rainfall periods to prevent water pooling and potential electrical issues.
• Corrosion-resistant materials: Use marine-grade aluminum and stainless steel components to resist salt air corrosion near the coast.

Despite these considerations, Terra de Areia offers reasonable solar potential, particularly during the warmer months. The key to success lies in proper system design that accounts for local environmental conditions and implementing appropriate maintenance practices to ensure consistent long-term performance.

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 Terra De Areia

Seasonal solar PV output for Latitude: -29.5885, Longitude: -50.0615 (Terra De Areia, 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 26° North in Terra De Areia, Brazil

To maximize your solar PV system's energy output in Terra De Areia, Brazil (Lat/Long -29.5885, -50.0615) throughout the year, you should tilt your panels at an angle of 26° 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 Terra De Areia, 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 Terra De Areia, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 26° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
13° North in Summer	35° North in Autumn	45° North in Winter	22° 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 Terra De Areia, 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 Terra De Areia, 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 Terra De Areia, Brazil

Topographical Features of Terra de Areia

Terra de Areia sits in the northeastern region of Rio Grande do Sul state, positioned within the coastal lowlands that characterize much of this part of southern Brazil. The municipality is located approximately 100 kilometers northeast of Porto Alegre, nestled between the Atlantic coastal plain and the foothills of the Serra Geral mountain range that rises further inland. The immediate terrain around Terra de Areia consists primarily of gently rolling hills and relatively flat coastal plains, with elevations typically ranging from near sea level to approximately 200 meters above sea level. The landscape is part of the broader Pampa biome, which extends across much of southern Brazil, Uruguay, and northern Argentina. This region is characterized by grasslands interspersed with gallery forests along waterways and scattered woodlands on hillsides. The area experiences a subtropical climate with well-distributed rainfall throughout the year. The topography includes numerous small streams and rivers that drain eastward toward the Atlantic Ocean, creating a network of shallow valleys and gentle ridges. The soil composition varies from sandy deposits near the coast to more fertile clay-rich soils inland, reflecting the region's geological history of marine and fluvial deposition.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations in the Terra de Areia region would be the elevated plateaus and gentle slopes that face north or northeast, taking advantage of optimal sun exposure throughout the day. These areas typically occur on the higher ground between stream valleys, where the terrain is relatively stable and well-drained. The coastal plain areas, while generally flat and potentially easier to develop, may present challenges due to higher humidity levels, occasional flooding during heavy rainfall periods, and proximity to wetland areas that could have environmental protection restrictions. The slightly elevated terrain, typically found 10 to 30 kilometers inland from the immediate coastal zone, offers better drainage and more consistent weather patterns. Areas with gentle south-facing slopes should generally be avoided for solar installations, as they receive less direct sunlight. Similarly, the narrow valley bottoms along streams and rivers are less suitable due to potential flooding, higher humidity, and the likelihood of morning fog that can reduce solar energy capture efficiency. The region's relatively stable geological conditions, with minimal seismic activity and well-consolidated soils, make most elevated areas suitable from an engineering perspective. The existing road network, developed primarily to serve agricultural activities, provides reasonable access to many potential solar development sites, though some improvements to infrastructure might be necessary for large-scale projects. Agricultural lands currently used for cattle grazing or crop production could potentially be converted to solar farms, particularly on properties with marginal productivity due to soil conditions or topographical constraints. The integration of solar installations with continued agricultural use, known as agrivoltaics, might also be feasible in certain areas where the terrain and land use patterns are appropriate.

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.