Urupema, Santa Catarina, Brazil, located in the Southern Sub Tropics at coordinates -28.0449, -49.9272, presents a moderately favorable location for year-round solar energy generation, though with significant seasonal variations that potential solar installers should carefully consider.

Seasonal Solar Performance

The location shows strong summer performance with solar panels generating 6.09 kWh per day per kilowatt of installed capacity during the summer months. Spring also delivers solid results at 5.14 kWh/day per kW, making these the optimal seasons for solar energy production at this site. However, the location experiences notable challenges during cooler months. Autumn production drops to 4.46 kWh/day per kW, while winter presents the most significant limitation with only 3.37 kWh/day per kW of generation. This represents nearly a 45% reduction in output compared to peak summer performance. For fixed panel installations at Urupema, Santa Catarina, the ideal tilt angle to maximize total year-round solar production is 25 degrees facing North. This angle is calculated by analyzing daily solar elevation angles throughout the year and weighting them according to solar irradiance data to optimize annual energy harvest.

Local Factors Affecting Solar Production

Several environmental and weather factors in the Urupema region can significantly impact solar panel performance and require careful consideration during installation planning. The area's elevation of approximately 1,400 meters above sea level means frequent fog formation, particularly during winter months and early morning hours. This fog can substantially reduce solar irradiance reaching the panels, especially during the already challenging winter season when output is naturally lower. Urupema experiences regular frost and occasional snow during winter months, which can temporarily cover panels and reduce output. More importantly, the freeze-thaw cycles can stress mounting systems and electrical connections if not properly designed for these conditions. The region is also subject to strong winds, particularly during seasonal weather transitions. These winds can carry dust and debris that accumulate on panel surfaces, reducing efficiency over time.

Preventative Measures for Optimal Performance

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

• Install panels with adequate spacing and proper drainage to prevent ice buildup and allow snow to slide off naturally
• Use mounting systems specifically rated for freeze-thaw cycles and high wind loads typical of elevated locations
• Position panels to minimize morning fog impact by avoiding low-lying areas and ensuring good air circulation around the installation
• Implement a regular cleaning schedule, particularly important given the dusty conditions from seasonal winds
• Consider slightly steeper tilt angles than the calculated optimum to encourage natural snow shedding, though this should be balanced against the reduced annual output

The seasonal variation in output makes Urupema better suited for grid-tied systems rather than off-grid installations, unless substantial battery storage is incorporated to compensate for the significant winter production decrease. Overall, while the location can support solar energy generation, the pronounced seasonal variations and local weather challenges require careful system design and maintenance planning to achieve optimal 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 Urupema

Seasonal solar PV output for Latitude: -28.0449, Longitude: -49.9272 (Urupema, 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 25° North in Urupema, Brazil

To maximize your solar PV system's energy output in Urupema, Brazil (Lat/Long -28.0449, -49.9272) throughout the year, you should tilt your panels at an angle of 25° 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 Urupema, 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 Urupema, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 25° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
12° North in Summer	34° North in Autumn	43° North in Winter	21° 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 Urupema, 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 Urupema, 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 Urupema, Brazil

Topographical Features of the Urupema Region

Urupema sits in the heart of Santa Catarina's mountainous highlands, positioned within the Serra Geral mountain range at an elevation of approximately 1,400 meters above sea level. This makes it one of Brazil's highest municipalities, nestled among rolling hills and steep-sided valleys that characterize the southern Brazilian plateau. The terrain around Urupema is predominantly hilly to mountainous, with elevations ranging from about 1,200 meters in the lower valleys to over 1,800 meters on the highest peaks.

The landscape features a complex network of ridges and valleys carved by centuries of erosion, creating a dramatic topography of undulating highlands. The region experiences a temperate climate due to its elevation, with the high altitude contributing to cooler temperatures year-round compared to coastal areas of Santa Catarina. The terrain is characterized by grasslands interspersed with patches of Araucaria forest, particularly on the steeper slopes and in protected valleys.

Rocky outcrops and basaltic formations are common throughout the area, remnants of ancient volcanic activity that shaped much of southern Brazil's geological foundation. The soil composition varies from thin, rocky soils on the steeper slopes to deeper, more fertile soils in the valley bottoms where agricultural activities are concentrated.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations around Urupema would be the gentler slopes and plateau areas that offer relatively flat or moderately sloped terrain. The elevated ridges and broader valley floors present the best opportunities, particularly those with southern or southwestern exposures that can maximize solar collection throughout the day.

Areas to the east and southeast of Urupema town center offer several advantages for solar development. These locations feature more gradual topography with expansive grassland areas that would require minimal terrain modification. The plateau regions extending toward neighboring municipalities like São Joaquim provide large, relatively flat expanses that could accommodate substantial solar arrays while maintaining reasonable construction and maintenance access.

The western approaches to Urupema also present favorable conditions, where the terrain transitions from the steeper mountain slopes to more manageable gradients. These areas benefit from good road access via existing rural routes, which would facilitate construction and ongoing operations. The grassland areas in these locations are less ecologically sensitive than the forested regions, making environmental permitting potentially more straightforward.

Areas to avoid for large installations would include the steeper mountainsides, particularly those with grades exceeding 15-20 degrees, as these would require extensive grading and present ongoing maintenance challenges. The forested valleys and areas with significant rock outcroppings would also be less suitable due to clearing requirements and foundation complications. Additionally, the lowest-lying areas that may experience fog accumulation or have drainage issues during the rainy season should be avoided in favor of the better-drained elevated positions.

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.