Mairi, Bahia, Brazil presents an excellent location for year-round solar PV energy generation, benefiting from its tropical positioning where consistent sunlight availability makes solar power highly viable throughout the year.

Solar Energy Production Potential

The solar energy output data for Mairi demonstrates strong performance across all seasons. Spring delivers the highest production at 6.17 kWh per day per kW of installed capacity, closely followed by summer at 6.02 kWh per day. Autumn maintains robust output at 5.93 kWh per day, while winter shows the lowest but still substantial production at 4.75 kWh per day. This seasonal variation of approximately 30% between peak and minimum output is relatively modest, indicating reliable year-round solar generation potential. The strongest production periods occur during spring and summer months, making these the ideal times for maximum solar energy harvest.

Optimal Panel Configuration

For fixed panel installations at this location, the ideal tilt angle to maximize total year-round solar production is 11 degrees North. This relatively shallow angle reflects Mairi's proximity to the equator and helps optimize solar collection throughout the annual solar cycle.

Environmental and Weather Considerations

Several local factors could potentially impact solar production efficiency in Mairi and require consideration during installation planning:

• Dust and Particulate Accumulation: Brazil's interior regions can experience significant dust buildup on solar panels, particularly during dry seasons, which reduces light transmission and energy output
• Intense Tropical Rainfall: While rain can help clean panels naturally, heavy tropical downpours may cause temporary shading and require robust mounting systems
• High Humidity Levels: Tropical humidity can affect electrical components and create condensation issues
• Temperature Extremes: High ambient temperatures can reduce panel efficiency and stress system components

Preventative Measures for Optimal Performance

To maximize energy production and system longevity in Mairi's environment, several installation strategies should be implemented: Regular cleaning schedules become essential, with automated cleaning systems or easy-access designs facilitating frequent dust removal. Installing panels with adequate ventilation spacing helps combat efficiency losses from high temperatures while ensuring proper airflow around components. Choosing components rated for tropical conditions, including corrosion-resistant mounting hardware and weatherproof electrical enclosures, protects against humidity and temperature fluctuations. Robust grounding systems and surge protection help manage electrical risks during intense rainfall periods. Strategic positioning away from dust sources and ensuring proper drainage around installations prevents water accumulation while maintaining accessibility for maintenance activities essential in this climate zone.

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 Mairi

Seasonal solar PV output for Latitude: -11.6329, Longitude: -40.2099 (Mairi, 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 11° North in Mairi, Brazil

To maximize your solar PV system's energy output in Mairi, Brazil (Lat/Long -11.6329, -40.2099) throughout the year, you should tilt your panels at an angle of 11° 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 Mairi, 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 Mairi, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 11° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
4° South in Summer	17° North in Autumn	27° North in Winter	6° 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 Mairi, 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 Mairi, 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 Mairi, Brazil

Topographical Features Around Mairi

The region surrounding Mairi in Bahia state presents a landscape characteristic of Brazil's semi-arid northeastern interior. This area sits within the Caatinga biome, where the terrain consists primarily of gently rolling hills and broad, flat valleys that stretch across the horizon. The elevation changes are generally modest, with the land rising and falling in gradual undulations rather than dramatic peaks or deep canyons. The topography here reflects the ancient geological foundations of the Brazilian Shield, creating a relatively stable and predictable landscape. Rocky outcrops of crystalline formations occasionally punctuate the otherwise smooth terrain, while seasonal creek beds and small river valleys cut shallow channels through the countryside. These waterways typically flow only during the rainy season, leaving behind sandy or rocky beds for much of the year. The soil composition varies between areas of exposed bedrock, sandy deposits, and patches of more fertile alluvium in the valley bottoms. Much of the natural vegetation consists of drought-adapted shrubs and small trees that characterize the Caatinga ecosystem, though human activity has cleared significant portions for agriculture and livestock grazing.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for extensive solar photovoltaic installations would be the broad, flat valley floors and gently sloping hillsides that dominate this region. These areas offer several advantages for solar development, including relatively level ground that minimizes the need for extensive grading and earthwork during construction. The wide valley systems provide particularly attractive sites because they offer large contiguous areas of suitable land with minimal topographical obstacles. These flat expanses allow for efficient panel layout and reduce the complexity of tracking systems, while also facilitating access for construction equipment and ongoing maintenance operations. Areas with gentle south-facing slopes could prove especially valuable, as they naturally orient solar panels toward optimal sun exposure throughout the day. The stable geological conditions underlying most of the region provide solid foundations for mounting systems, reducing construction challenges and long-term structural concerns. The relatively sparse vegetation and limited agricultural productivity of much of the surrounding landscape means that solar development would face fewer competing land use pressures compared to more fertile regions. Additionally, the open terrain and good visibility across the landscape simplify the process of conducting site surveys and environmental assessments necessary for large-scale renewable energy projects.

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.