Dom Pedro, Maranhão, Brazil represents an excellent location for year-round solar energy generation, benefiting from its tropical positioning where consistent sunlight availability makes solar photovoltaic systems highly productive throughout all seasons.

Solar Energy Production Performance

The solar energy output at Dom Pedro demonstrates remarkably consistent performance across all meteorological seasons. During summer months, solar panels generate 5.40 kWh per day for each kilowatt of installed capacity. Production increases progressively through autumn (5.79 kWh/day per kW) and reaches peak performance during winter months at 6.12 kWh per day per kW of installed solar capacity. Spring maintains strong production levels at 6.03 kWh per day per kW, creating an annual profile that shows minimal seasonal variation compared to locations at higher latitudes. This consistency makes Dom Pedro particularly attractive for solar installations, as energy output remains reliable year-round without dramatic seasonal fluctuations.

Optimal Installation Configuration

For fixed panel installations at Dom Pedro, Maranhão, the ideal tilt angle to maximize total year-round solar production is 6 degrees facing North. This relatively shallow angle reflects the location's proximity to the equator, where the sun maintains a high position in the sky throughout the year. The optimal angle calculation accounts for daily solar elevation variations, weighted by solar irradiance data and Earth's elliptical orbit patterns.

Environmental and Weather Considerations

Several environmental factors at Dom Pedro could potentially impact solar energy production and require consideration during installation planning. The tropical climate brings intense rainfall during wet seasons, which can create challenges for solar panel maintenance and performance. Heavy precipitation may cause temporary reductions in solar output during storm events, and accumulated debris or sediment on panel surfaces can reduce efficiency if not properly managed. High humidity levels characteristic of tropical regions can accelerate corrosion of metal components and electrical connections. This environmental factor requires careful attention to material selection and protective measures during installation. Strong winds associated with tropical weather systems pose potential risks to solar panel mounting systems and structural integrity. Additionally, the intense tropical sun can cause higher operating temperatures in solar equipment, potentially reducing efficiency and accelerating component degradation.

Preventative Measures for Optimal Performance

Several installation strategies can help maximize solar energy production while mitigating environmental challenges at Dom Pedro.

• Install robust drainage systems around solar installations to handle heavy rainfall and prevent water accumulation
• Use marine-grade or tropically-rated electrical components and corrosion-resistant mounting hardware
• Design mounting systems to withstand high wind loads with appropriate structural reinforcement
• Implement regular cleaning schedules to remove debris, dust, and organic matter from panel surfaces
• Ensure adequate ventilation beneath panels to promote cooling and reduce thermal stress

Selecting solar panels and inverters specifically rated for high-temperature tropical environments will help maintain efficiency and extend equipment lifespan. Regular maintenance protocols should include inspection of electrical connections, cleaning of panel surfaces, and monitoring of system performance to identify any weather-related impacts quickly. Despite these environmental considerations, Dom Pedro's consistent solar resource and strong year-round production potential make it a highly favorable location for solar energy generation when proper installation and maintenance practices are implemented.

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 Dom Pedro

Seasonal solar PV output for Latitude: -4.8626, Longitude: -44.5409 (Dom Pedro, 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 6° North in Dom Pedro, Brazil

To maximize your solar PV system's energy output in Dom Pedro, Brazil (Lat/Long -4.8626, -44.5409) throughout the year, you should tilt your panels at an angle of 6° 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 Dom Pedro, 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 Dom Pedro, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 6° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
11° South in Summer	11° North in Autumn	20° North in Winter	1° South 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 Dom Pedro, 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 Dom Pedro, 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 Dom Pedro, Brazil

Topographical Features of Dom Pedro Region

Dom Pedro is situated in the state of Maranhão in northeastern Brazil, positioned within a transitional zone between the Amazon Basin and the Brazilian Highlands. The terrain around this municipality is characterized by relatively gentle topography, with elevations typically ranging from 200 to 400 meters above sea level. The landscape consists primarily of rolling hills and broad valleys, creating a moderately undulating terrain that slopes gradually toward the Atlantic coastal plains to the north. The region sits within the Cerrado biome, Brazil's vast tropical savanna ecoregion, which extends across much of the central plateau. This area features extensive flat to gently rolling plains interspersed with low ridges and shallow depressions. The local topography has been shaped by ancient geological formations and weathering processes, resulting in a landscape dominated by lateritic soils and scattered rock outcrops. Drainage patterns in the area are influenced by several small tributaries that flow northward toward the Atlantic Ocean. These waterways have carved shallow valleys through the terrain, creating a network of gentle slopes and relatively flat interfluves. The overall relief is modest, with local elevation differences rarely exceeding 100 meters across typical development areas.

Vegetation and Land Use Patterns

The natural vegetation consists of Cerrado savanna, characterized by grasslands dotted with scattered trees and gallery forests along watercourses. Much of the original vegetation has been modified by agricultural activities, particularly cattle ranching and crop cultivation. Large areas have been cleared and converted to pastureland, creating extensive open spaces with minimal tree cover. The agricultural landscape is dominated by cattle ranching operations that have established vast cleared areas suitable for grazing. These cleared lands often extend across multiple square kilometers with minimal topographical obstacles. Additionally, some areas have been developed for soybean and corn cultivation, further expanding the available open terrain.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations would be the extensive cleared pasturelands that surround Dom Pedro. These areas offer several advantages including minimal slope variations, existing cleared vegetation, and established access routes developed for agricultural operations. The gentle topography requires minimal site preparation and grading, reducing installation costs significantly. Areas located on the broader interfluves between drainage channels would be particularly well-suited for solar development. These elevated areas typically have better drainage characteristics and are less prone to seasonal flooding. The slightly elevated positions also provide natural advantages for equipment access and maintenance operations. Former agricultural lands that have been cleared for crop production represent another excellent opportunity for solar development. These areas often feature relatively level terrain with existing infrastructure access, including roads and electrical connections that were established to support farming operations. The southeastern and southwestern areas around Dom Pedro appear especially promising due to their combination of gentle topography, extensive cleared land, and proximity to existing infrastructure. These zones feature large contiguous areas of suitable terrain that could accommodate utility-scale solar installations spanning several hundred hectares. Areas with slopes facing south or southeast would be particularly advantageous for solar panel orientation, though the generally gentle nature of the local topography means that most cleared areas could be effectively utilized with appropriate panel mounting systems. The consistent elevation and minimal shading from topographical features across much of the region create favorable conditions for solar energy generation throughout most cleared areas.

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

Tell Us About Your Work

We love seeing how our research helps others! If you've cited this article in your work, we'd be delighted to hear about it. Drop us a line via our Contact Us page or on X, to share where you've used our information - we may feature a link to your work on our site. This helps create a network of valuable resources for others in the solar energy community and helps us understand how our research is contributing to the field. Plus, we occasionally highlight exceptional works that reference our research on our social media channels.

Feeling generous?

Share this with your friends!

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.