Pastos Bons, Maranhão, Brazil presents an excellent location for year-round solar energy generation. Located in the tropical region at coordinates -6.766, -44.2423, this area benefits from consistent sunlight throughout the year, with seasons characterized more by wet and dry periods rather than dramatic temperature variations.

Solar Energy Production Potential

The solar energy output data for Pastos Bons shows strong performance across all seasons. Winter emerges as the peak production season, generating 6.63 kWh per day per kW of installed solar capacity. This is followed by spring at 5.95 kWh/day, autumn at 5.81 kWh/day, and summer at 5.02 kWh/day per kW. The winter months represent the ideal time for solar generation at this location, producing over 30% more energy than the summer period. This pattern is typical for locations in the Southern Hemisphere tropics, where winter brings clearer skies and optimal sun angles. For maximum year-round energy production, solar panels should be installed at a fixed tilt angle of 8 degrees facing North. This angle has been calculated to optimize total annual output by accounting for the sun's path throughout the year and weighting for daily solar potential.

Environmental and Weather Factors

Several local factors could potentially impact solar energy production in Pastos Bons:

• Wet season rainfall and cloud cover: Extended periods of heavy rain and thick cloud formations can significantly reduce solar irradiance
• High humidity levels: Tropical humidity can create atmospheric haze that filters sunlight
• Dust and particulate accumulation: Dry season winds may deposit dust and debris on panel surfaces
• Vegetation growth: The tropical climate supports rapid plant growth that could create shading issues

Preventative Measures for Optimal Performance

To maximize solar energy production despite these challenges, several installation strategies should be considered: Panel cleaning systems become crucial in this environment. Installing automated cleaning mechanisms or scheduling regular manual cleaning will prevent dust buildup and maintain optimal light transmission. During the wet season, natural rainfall can help with cleaning, but proper drainage systems around the installation prevent water pooling. Adequate spacing between panel rows prevents shading and allows for proper air circulation, which helps reduce the impact of humidity on equipment performance. Elevated mounting systems improve airflow underneath panels and reduce the risk of moisture-related issues. Vegetation management requires ongoing attention. Regular trimming of nearby trees and bushes prevents shading, while establishing clear zones around the solar installation helps maintain optimal sun exposure throughout the day. Installing monitoring systems allows for real-time performance tracking, helping identify when weather-related factors are impacting energy production and when maintenance interventions are needed.

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 Pastos Bons

Seasonal solar PV output for Latitude: -6.766, Longitude: -44.2423 (Pastos Bons, 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 8° North in Pastos Bons, Brazil

To maximize your solar PV system's energy output in Pastos Bons, Brazil (Lat/Long -6.766, -44.2423) throughout the year, you should tilt your panels at an angle of 8° 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 Pastos Bons, 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 Pastos Bons, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 8° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
9° South in Summer	14° North in Autumn	22° North in Winter	1° 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 Pastos Bons, 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 Pastos Bons, 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 Pastos Bons, Brazil

Topographical Features of the Pastos Bons Region

The area around Pastos Bons in Maranhão state sits within the expansive Brazilian Cerrado, characterized by gently rolling terrain and relatively modest elevation changes. This region forms part of the Central Brazilian Plateau, where the landscape consists primarily of broad, undulating plains interspersed with low hills and scattered mesa formations. The elevation around Pastos Bons typically ranges between 200 to 400 meters above sea level, creating a terrain that is neither mountainous nor completely flat. The topography features extensive tablelands known locally as chapadas, which are flat-topped elevated areas that have been shaped by millions of years of erosion. These plateaus are separated by shallow valleys and gentle slopes, creating a landscape that appears almost wave-like when viewed from elevated positions. The terrain gradually rises toward the south and east, while sloping more gently toward the northern lowlands that eventually drain into the Amazon basin. Scattered across this landscape are isolated hills called morros, which rise abruptly from the surrounding plains. These formations, while not particularly high, create notable landmarks in an otherwise relatively uniform topography. The region also contains numerous seasonal streams and small rivers that have carved shallow valleys through the landscape, though these waterways often flow only during the rainy season.

Optimal Areas for Large-Scale Solar Development

The chapada formations present the most promising locations for extensive solar photovoltaic installations in the Pastos Bons area. These elevated plateaus offer several advantages, including their flat to gently sloping surfaces that require minimal grading for solar panel installation. The consistent elevation of these tablelands also means fewer complications from shadows cast by varying terrain features, allowing for more efficient panel spacing and orientation. The areas immediately south and southeast of Pastos Bons contain some of the most suitable terrain for large-scale solar development. Here, the chapadas are particularly extensive and well-drained, with stable soil conditions that can support substantial infrastructure. The relatively sparse vegetation typical of the Cerrado in these elevated areas also reduces land clearing requirements compared to more densely forested regions. Northern sections of the region, while flatter overall, present mixed suitability due to seasonal flooding patterns and softer soils in valley areas. However, the higher ground between these seasonal wetlands could still accommodate solar installations with proper site selection. The key advantage of these northern areas lies in their accessibility to existing transportation networks and electrical infrastructure. Western areas near Pastos Bons offer moderate potential, though the terrain becomes slightly more varied with increased occurrence of isolated hills and deeper valley systems. While these features don't preclude solar development, they may require more careful site planning and potentially higher development costs due to the need for more extensive site preparation. The most practical approach for large-scale solar development in this region would involve selecting multiple sites across the most suitable chapada formations, taking advantage of the consistent topographical conditions while maintaining reasonable distances from existing infrastructure and transmission lines.

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.