Forquilhinha, Santa Catarina, Brazil 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 Southern Sub Tropics location shows significant fluctuation throughout the year. Summer delivers the strongest performance at 6.09 kWh per day per kW of installed capacity, making it the prime season for solar generation. Spring follows as the second-best period with 5.14 kWh daily output per kW. Autumn sees a decline to 4.46 kWh per day per kW, while winter represents the challenging period with the lowest output at just 3.37 kWh daily per kW of installed solar capacity. This winter dip means the location produces nearly half the energy compared to peak summer months.

Optimal Installation Setup

For maximum year-round energy production at Forquilhinha, Santa Catarina, solar panels should be installed at a fixed tilt angle of 26 degrees facing North. This angle has been calculated to optimize total annual solar output by accounting for the sun's varying position throughout the year and weighting for actual solar irradiance potential.

Environmental and Weather Challenges

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

• Subtropical humidity and moisture: The Southern Sub Tropics climate brings high humidity levels that can create condensation on solar panels, reducing efficiency
• Seasonal weather patterns: The region experiences distinct wet and dry seasons, with potential for extended cloudy periods during certain months
• Temperature variations: Significant seasonal temperature swings can affect panel efficiency, as solar panels typically perform better in cooler conditions
• Potential for severe weather: Subtropical regions can experience intense storms, hail, and strong winds that may damage installations

Preventative Installation Measures

To maximize energy production despite these challenges, several installation strategies prove beneficial. Proper panel spacing and mounting systems should allow adequate airflow underneath panels to reduce heat buildup and prevent moisture accumulation. Installing panels with anti-reflective coatings and hydrophobic surfaces helps shed water quickly and maintains cleaner panel surfaces. Regular cleaning schedules become particularly important in humid climates where dust and organic matter can accumulate more readily. Robust mounting systems designed to withstand local wind loads and potential storm conditions protect the long-term investment. Additionally, incorporating microinverters or power optimizers can help maintain system performance even when individual panels experience temporary shading or efficiency losses due to weather conditions. The seasonal variation at Forquilhinha means that while the location isn't ideal for consistent year-round solar generation, the strong summer and spring performance can still make solar installations economically viable with proper planning and installation techniques.

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 Forquilhinha

Seasonal solar PV output for Latitude: -28.7888, Longitude: -49.4635 (Forquilhinha, 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 Forquilhinha, Brazil

To maximize your solar PV system's energy output in Forquilhinha, Brazil (Lat/Long -28.7888, -49.4635) 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 Forquilhinha, 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 Forquilhinha, 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	44° 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 Forquilhinha, 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 Forquilhinha, 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 Forquilhinha, Brazil

Topographical Features of the Forquilhinha Region

The area surrounding Forquilhinha in Santa Catarina state sits within the southern Brazilian highlands, characterized by gently rolling hills and undulating terrain typical of the Serra Geral formation. This region forms part of the broader Atlantic Plateau, where elevations generally range from 100 to 400 meters above sea level. The landscape features a mix of moderate slopes interspersed with flatter valley floors and ridge systems that run predominantly in a north-south orientation. The terrain around Forquilhinha displays the characteristic topography of southern Brazil's coastal mountain region, with weathered volcanic rock formations creating a series of rounded hills and shallow valleys. These geological features result from ancient lava flows that have been eroded over millions of years, producing relatively stable ground conditions with moderate gradients. The area benefits from well-drained soils and established drainage patterns that flow eastward toward the Atlantic Ocean.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for extensive solar photovoltaic installations would be found on the broader hilltops and gentle south-facing slopes that characterize much of the regional landscape. These elevated areas typically offer the best combination of stable ground conditions, minimal shading from surrounding terrain features, and adequate space for large arrays. The rolling nature of the topography provides numerous sites where solar panels can be positioned to maximize exposure while maintaining reasonable construction and maintenance access. Valley floors and lower-lying areas, while potentially offering flatter terrain, may experience more frequent fog formation and reduced air circulation that could impact solar panel efficiency. The ridge systems running through the region present excellent opportunities for solar development, particularly where they align with east-west orientations that allow for optimal panel positioning. Areas with gentler slopes of less than 15 degrees would be most cost-effective for large-scale installations, as they require minimal ground preparation and grading work. The stable geological conditions throughout the region, combined with the moderate climate, create favorable circumstances for solar infrastructure development. Agricultural areas on the broader plateaus could potentially accommodate solar installations while maintaining some farming activities, particularly in agrivoltaic configurations where panels are elevated to allow continued land use beneath.

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.