Ibirataia, Bahia, Brazil presents an excellent location for year-round solar photovoltaic energy generation. Located in the tropical region at coordinates -13.9729, -39.6371, this area benefits from consistent sunlight throughout most of the year, with seasonal variations characterized more by wet and dry periods rather than the traditional temperature-based seasons found in temperate climates.

Seasonal Solar Performance

The solar energy output at Ibirataia shows strong performance across all seasons, with some notable variations. Spring delivers the highest energy production at 5.92 kWh per day per kW of installed solar capacity, closely followed by autumn at 5.90 kWh per day. Summer provides solid output at 5.76 kWh per day, while winter shows the lowest production at 4.73 kWh per day per kW installed. The most productive periods for solar generation at this location are spring and autumn, when atmospheric conditions and sun angles combine optimally. Even during the lowest-producing season of winter, the location still generates nearly 5 kWh per day per kW, demonstrating the consistent solar resource available in this tropical setting.

Optimal Panel Configuration

For fixed panel installations at Ibirataia, Bahia, the ideal tilt angle to maximize total year-round solar production is 13 degrees facing north. This angle is calculated by analyzing daily solar elevation angles at this latitude, determining optimal panel positioning, and weighting these angles by daily photovoltaic potential using solar irradiance data that accounts for Earth's elliptical orbit around the sun.

Environmental and Weather Challenges

Several local factors could potentially impact solar energy production at this Brazilian location, though most can be effectively managed with proper installation techniques. The tropical climate brings high humidity levels and frequent rainfall, particularly during wet seasons. This moisture can lead to increased soiling of solar panels from mud, organic debris, and mineral deposits. Additionally, the humid conditions may accelerate corrosion of metal components and electrical connections if not properly protected. Strong seasonal rains and occasional severe weather events common to tropical regions pose risks to solar installations. High winds during storms can create mechanical stress on mounting systems, while heavy rainfall may cause flooding or water infiltration into electrical components. The abundant vegetation typical of tropical Brazil can create shading issues as trees and plants grow rapidly in the favorable climate. Dust and pollen from the rich plant life can also accumulate on panel surfaces, reducing their efficiency.

Preventative Installation Measures

To maximize energy production despite these challenges, several preventative measures should be implemented:

• Install robust mounting systems designed to withstand high winds and severe weather conditions typical of tropical climates
• Use marine-grade or tropical-rated electrical components and wiring with enhanced corrosion resistance
• Implement proper drainage systems to prevent water accumulation around installations
• Design panel layouts with adequate spacing for air circulation to reduce humidity-related issues
• Plan for regular cleaning schedules to remove organic debris, dust, and mineral deposits

Regular vegetation management around the installation site will prevent shading and reduce the accumulation of organic matter on panels. Selecting panels and inverters specifically rated for high-temperature, high-humidity environments will ensure reliable long-term performance in Ibirataia's tropical conditions. With proper planning and installation techniques, the environmental challenges at this location are entirely manageable, allowing solar installations to take full advantage of the excellent year-round solar resource available in this part of Brazil.

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 Ibirataia

Seasonal solar PV output for Latitude: -13.9729, Longitude: -39.6371 (Ibirataia, 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 13° North in Ibirataia, Brazil

To maximize your solar PV system's energy output in Ibirataia, Brazil (Lat/Long -13.9729, -39.6371) throughout the year, you should tilt your panels at an angle of 13° 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 Ibirataia, 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 Ibirataia, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 13° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
1° South in Summer	20° North in Autumn	30° North in Winter	8° 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 Ibirataia, 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 Ibirataia, 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 Ibirataia, Brazil

Topographical Features of the Ibirataia Region

Ibirataia sits in the southern portion of Bahia state, Brazil, within a landscape characterized by gently rolling hills and undulating terrain typical of the Atlantic Forest transition zone. The municipality occupies an area where the coastal mountain ranges begin to give way to the interior plateau, creating a varied topography with elevations ranging from approximately 200 to 600 meters above sea level. The terrain consists primarily of rounded hills and shallow valleys, with slopes that are generally moderate rather than steep.

The region's topography has been shaped by ancient geological processes, resulting in weathered granite and gneiss formations that create a relatively stable foundation. Small streams and seasonal watercourses wind through the valleys, creating narrow ribbons of riparian vegetation that contrast with the surrounding agricultural lands and remnant forest patches. The landscape shows clear evidence of human modification, with much of the original Atlantic Forest vegetation having been converted to pasture, agricultural fields, and small settlements over the past centuries.

Drainage Patterns and Water Features

The drainage network in the Ibirataia area consists of numerous small tributaries that eventually feed into larger river systems flowing toward the Atlantic coast. These waterways have carved gentle valleys through the landscape, creating a dendritic pattern of drainage that influences both the local microtopography and land use patterns. During the wet season, these streams become more prominent features of the landscape, while in drier periods many become intermittent or reduced to small pools.

The presence of these water features creates localized variations in the topography, with narrow floodplains and slightly steeper valley sides providing natural boundaries and influencing where development and agriculture occur. The overall drainage pattern tends to create a series of interfluves – the higher ground between valleys – that often provide the most suitable terrain for large-scale development projects.

Optimal Areas for Large-Scale Solar Development

The interfluves and broader hilltops surrounding Ibirataia present the most promising locations for extensive solar photovoltaic installations. These elevated areas typically offer several advantages including relatively flat to gently sloping terrain that minimizes grading requirements and construction costs. The higher elevations also tend to have fewer drainage complications and are less likely to experience flooding or excessive moisture accumulation that could affect equipment performance.

Areas to the north and northeast of the municipality appear particularly well-suited for solar development, where the topography opens into broader, more gently rolling terrain with fewer deeply incised valleys. These locations would allow for the installation of large arrays with minimal terrain modification while maintaining good access for construction and maintenance vehicles. The slopes in these areas are generally oriented to take advantage of optimal solar exposure throughout the day.

The southern and western areas around Ibirataia also present opportunities, particularly on the broader ridgelines and plateau-like surfaces that occur between the major drainage systems. These locations offer the additional advantage of being somewhat removed from the more densely settled valley areas, reducing potential conflicts with existing land uses while still maintaining reasonable access to transportation infrastructure.

When selecting specific sites, the most suitable locations would be those that combine gentle slopes of less than 10 degrees, minimal tree cover, good road access, and sufficient distance from sensitive environmental areas such as riparian zones and remaining forest fragments. The region's generally stable geology and moderate relief make it well-suited for the infrastructure requirements of large-scale solar installations, with fewer concerns about extreme slopes, unstable soils, or complex drainage issues that might complicate construction and operation.

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.