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Flag of BrazilSolar PV Analysis of Ruy Barbosa, Brazil

Graph of hourly avg kWh electricity output per kW of Solar PV installed in Ruy Barbosa, Brazil (by season)

Ruy Barbosa, Bahia, Brazil represents an excellent location for year-round solar energy generation. Situated in the tropics at coordinates -12.2465, -40.3267, this region benefits from consistent sunlight throughout most of the year, with seasons characterized more by wet and dry periods rather than dramatic temperature variations.

Solar Energy Output Performance

The solar energy production data for Ruy Barbosa shows strong and relatively consistent performance across all seasons. Spring emerges as the peak production period, generating 6.11 kWh per day per kW of installed solar capacity. Autumn follows closely with 5.92 kWh/day, while summer produces 5.79 kWh/day. Winter shows the lowest output at 4.73 kWh/day, though this still represents solid production levels. The optimal times for solar generation at this location are spring and autumn, when atmospheric conditions and sun angles combine to maximize energy output. Even during the winter months, the tropical location ensures that solar production remains viable and economically attractive.

Optimal Panel Configuration

For fixed panel installations in Ruy Barbosa, Bahia, the ideal tilt angle to maximize total year-round solar production is 12 degrees North. This angle is calculated by analyzing daily solar elevation angles at this latitude, determining optimal panel positioning, and weighting these angles according to photovoltaic potential using solar irradiance data while accounting for Earth's elliptical orbit.

Environmental and Weather Challenges

Several local factors could potentially impact solar energy production in Ruy Barbosa, Bahia, though the location remains highly favorable overall. The most significant challenge is the tropical wet season, which brings increased cloud cover and frequent rainfall. During these periods, solar irradiance can be substantially reduced, affecting daily energy output. The high humidity levels typical of tropical climates can also create issues with equipment performance and longevity. Dust accumulation presents another concern, particularly during drier periods. The semi-arid characteristics of parts of northeastern Brazil mean that fine particles can settle on solar panels, reducing their efficiency by blocking sunlight from reaching the photovoltaic cells.

Preventative Measures for Optimal Performance

Several strategies can help maximize solar energy production despite these environmental challenges:
  • Install panels with adequate spacing and ventilation to prevent moisture buildup and allow for proper air circulation
  • Implement regular cleaning schedules, particularly important during dust-prone dry seasons
  • Use high-quality mounting systems with corrosion-resistant materials to withstand humid tropical conditions
  • Consider installing panels at the optimal 12-degree tilt to facilitate natural cleaning from rainfall
  • Employ monitoring systems to track performance and identify when cleaning or maintenance is needed
The tilt angle of 12 degrees North not only maximizes energy production but also helps with self-cleaning during rain events, as water can more easily run off the panel surface, carrying away accumulated dust and debris. Despite these considerations, Ruy Barbosa's tropical location with consistent solar irradiance makes it highly suitable for solar energy generation throughout the year, with proper installation and maintenance practices ensuring optimal performance.

Note: The Tropics are located between 23.5° North and -23.5° South of the equator.

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 Ruy Barbosa

Seasonal solar PV output for Latitude: -12.2465, Longitude: -40.3267 (Ruy Barbosa, 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:

Summer
Average 5.79kWh/day in Summer.
Autumn
Average 5.92kWh/day in Autumn.
Winter
Average 4.73kWh/day in Winter.
Spring
Average 6.11kWh/day in Spring.

 

Ideally tilt fixed solar panels 12° North in Ruy Barbosa, Brazil

To maximize your solar PV system's energy output in Ruy Barbosa, Brazil (Lat/Long -12.2465, -40.3267) throughout the year, you should tilt your panels at an angle of 12° 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.

The sun
At Latitude: -12.2465, Longitude: -40.3267, the ideal angle to tilt panels is 12° North

Seasonally adjusted solar panel tilt angles for Ruy Barbosa, 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 Ruy Barbosa, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 12° North tilt angle throughout the year.

Overall Best Summer Angle Overall Best Autumn Angle Overall Best Winter Angle Overall Best Spring Angle
3° South in Summer 18° North in Autumn 28° North in Winter 6° North in Spring

Assuming you can modify the tilt angle of your solar PV panels throughout the year, you can optimize your solar generation in Ruy Barbosa, Brazil as follows: In Summer, set the angle of your panels to 3° facing South. In Autumn, tilt panels to 18° facing North for maximum generation. During Winter, adjust your solar panels to a 28° angle towards the North for optimal energy production. Lastly, in Spring, position your panels at a 6° angle facing North to capture the most solar energy in Ruy Barbosa, Brazil.

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 Ruy Barbosa, 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 Ruy Barbosa, 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.






Please enter information above to calculate panel spacing.

Topography for solar PV around Ruy Barbosa, Brazil

Topographical Features of Ruy Barbosa Region

The area around Ruy Barbosa in Bahia, Brazil sits within the Chapada Diamantina region, characterized by a diverse landscape that transitions from elevated plateaus to rolling hills and valleys. This municipality is positioned at approximately 500 meters above sea level, nestled within the Brazilian Highlands that form part of the larger Atlantic Plateau system. The immediate surroundings feature a mix of gentle slopes and more pronounced elevation changes typical of the Caatinga biome. The terrain includes scattered rock formations and outcrops that are remnants of ancient geological processes, creating a landscape punctuated by both flat expanses and moderately steep inclines. These geological features contribute to natural drainage patterns that flow toward the ParaguaƧu River basin to the east. Moving outward from Ruy Barbosa, the topography becomes increasingly varied. To the west and northwest, the land gradually rises toward the more dramatic escarpments and mesas of the central Chapada Diamantina. Eastward, the terrain generally descends toward the coastal plains, though this transition occurs gradually over many kilometers.

Optimal Areas for Large-Scale Solar Development

The most promising locations for extensive solar photovoltaic installations lie on the relatively flat plateau areas extending northeast and southeast of Ruy Barbosa. These zones offer expansive areas of level ground with minimal slope variations, reducing both construction complexity and costs associated with site preparation and panel mounting systems. The elevated plains approximately 10 to 20 kilometers east of the municipality present particularly favorable conditions. These areas combine sufficient flatness for large installations with good accessibility via existing road networks. The terrain in these locations typically exhibits gentle undulations rather than steep gradients, making them suitable for utility-scale solar farms spanning hundreds of hectares. Areas to the south and southwest also show promise, where the landscape opens into broader valleys with relatively stable terrain. These locations benefit from being positioned away from the more dramatic topographical features found deeper within the Chapada Diamantina, while still maintaining the elevated position that characterizes the region. The western approaches toward the higher elevations should generally be avoided for large-scale development due to increasing terrain complexity and the presence of more significant rock formations. Similarly, areas immediately adjacent to major drainage channels may present challenges related to seasonal water flow patterns and soil stability.

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

Article: Solar PV Analysis of Ruy Barbosa, Brazil
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Monday 30th of June 2025
Last Updated: Tuesday 5th 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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