Feliz, Rio Grande do Sul, Brazil, located in the Southern Sub Tropics at coordinates -29.4532, -51.2761, offers varying conditions for solar energy production throughout the year. This location experiences significant seasonal differences in solar PV output, with the highest generation occurring during summer months.

Seasonal Solar Production

The solar energy production in Feliz shows clear seasonal patterns. Summer delivers the highest output at 7.26kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season with 5.80kWh/day, while autumn generates 4.62kWh/day. Winter shows the lowest production at just 3.24kWh/day per kilowatt of installed capacity.

This seasonal variation means that Feliz residents can expect more than twice the daily energy production in summer compared to winter. This pattern is typical for locations in the Southern Hemisphere where the sun's path is higher in the sky during summer months.

Optimal Panel Installation

For fixed solar panel installations in Feliz, Rio Grande do Sul, the ideal tilt angle to maximize year-round energy production is 25 degrees facing North. This specific angle has been calculated by analyzing the daily solar elevation at this latitude, weighted by potential daily production values, accounting for Earth's elliptical orbit.

Proper panel orientation at this angle will help capture the maximum possible solar energy throughout the year, though seasonal adjustments would yield even better results if that option is available.

Environmental and Weather Considerations

Several factors may impact solar production in Feliz. The region can experience periods of rainfall and cloud cover, particularly during spring and autumn transitional seasons. The subtropical location also means occasional summer thunderstorms that temporarily reduce solar output.

To mitigate these challenges, solar installations should include:

• Regular cleaning systems to remove dust and debris that may accumulate, especially during drier periods
• Quality inverters that can efficiently handle variable production levels
• Consideration of microinverters or power optimizers if partial shading from nearby trees or structures is unavoidable
• Robust mounting systems that can withstand occasional strong winds

With proper installation accounting for these factors, solar energy remains a viable year-round energy source in Feliz, Rio Grande do Sul, though residents should expect significant seasonal variation in their system's output.

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 Feliz

Seasonal solar PV output for Latitude: -29.4532, Longitude: -51.2761 (Feliz, 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 Feliz, Brazil

To maximize your solar PV system's energy output in Feliz, Brazil (Lat/Long -29.4532, -51.2761) 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 Feliz, 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 Feliz, 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
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 Feliz, 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 Feliz, 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 Feliz, Brazil

The topography around Feliz, Brazil presents a varied landscape, characterized by rolling hills, valleys, and elevated plateaus typical of Brazil's southern highland region. Situated in the state of Rio Grande do Sul, Feliz lies in the Serra Gaúcha region, which forms part of the larger Southern Brazilian Plateau. This area exhibits significant elevation changes, with the terrain generally rising from east to west. The immediate surroundings of Feliz feature gentle to moderately steep hills interspersed with small valleys carved by local waterways. The elevation in this area typically ranges between 200 and 600 meters above sea level, creating a landscape with numerous slopes of varying gradients. The Caí River valley influences the local topography, with the river itself flowing through the region. This creates lower-lying areas along its course, surrounded by higher terrain.

Vegetation and Land Use

The natural vegetation around Feliz consists of a mixture of subtropical Atlantic Forest remnants and grasslands. However, much of the original forest coverage has been modified for agricultural use, with vineyards, orchards, and small-scale farming dominating the landscape. These agricultural activities have shaped the topography further, with terracing visible on some hillsides.

Potential Areas for Solar PV Development

For large-scale solar photovoltaic installations, the most suitable areas near Feliz would be the flatter plateaus and gentler slopes with southern exposure. Specifically, the elevated plateau regions to the northwest of Feliz offer promising conditions, as they provide relatively flat terrain at higher elevations with fewer obstacles to block sunlight. The slightly elevated plains that can be found between the hills, particularly those with minimal forest coverage, present good opportunities for solar development. These areas benefit from their open aspect and reduced shading from surrounding topographical features. Additionally, some of the broader valley floors, especially those oriented east-west, could accommodate larger solar installations. Areas to avoid would include the steeper north-facing slopes, densely forested regions, and flood-prone zones near the Caí River and its tributaries. The more rugged terrain to the northeast, with its deeper valleys and steeper gradients, would present significant construction challenges and potential shading issues that would reduce solar efficiency.

Accessibility Considerations

The road network around Feliz follows the natural contours of the landscape, with main routes typically occupying valley floors and gentler slopes. This existing infrastructure could facilitate access to potential solar development sites, particularly those closer to the main transportation corridors. However, some of the more elevated plateau regions might require additional infrastructure development to support construction and maintenance activities for large-scale solar installations. The varied topography of the region means that site-specific assessments would be essential before developing any large-scale solar projects, with particular attention to slope stability, drainage patterns, and the potential for seasonal changes in the landscape.

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.