Senador La Rocque, Maranhão, Brazil presents an excellent location for year-round solar photovoltaic energy generation. Located in the tropical region at coordinates -5.427, -47.1752, this area benefits from consistent sunlight throughout most of the year, with seasonal variations characterized more by wet and dry periods rather than dramatic temperature changes.

Solar Energy Production Potential

The solar energy output data for this location demonstrates strong and reliable performance across all seasons. Winter emerges as the most productive season, generating 6.10 kWh per day per kW of installed solar capacity. Autumn follows closely with 5.75 kWh/day, while Spring produces 5.52 kWh/day and Summer yields 5.15 kWh/day. This seasonal pattern is typical for locations in the Southern Hemisphere tropics, where winter months often provide clearer skies and optimal solar conditions. The relatively high production levels throughout all seasons make this location highly suitable for consistent solar energy generation. For maximum efficiency, fixed solar panels should be installed at a 6-degree tilt toward the North. This optimal angle maximizes total year-round production by accounting for the sun's path throughout the seasons and the location's specific latitude.

Environmental and Weather Factors

Several environmental factors could potentially impact solar production at Senador La Rocque, Maranhão, though the location's tropical characteristics help mitigate many common solar energy challenges. The most significant concern is likely the tropical wet season, which can bring heavy rainfall, increased cloud cover, and higher humidity levels. During these periods, solar panel efficiency may decrease due to reduced direct sunlight and potential accumulation of moisture or debris on panel surfaces. Dust and organic matter accumulation present another challenge, particularly during drier periods when winds can carry particles that settle on solar installations. In tropical environments, rapid vegetation growth and the presence of birds or other wildlife may also contribute to panel soiling.

Preventative Measures for Optimal Performance

Several installation 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 natural cleaning during rainfall
• Implement regular cleaning schedules, particularly important during dry seasons when dust accumulation is highest
• Use high-quality mounting systems that resist corrosion in humid tropical conditions
• Consider anti-soiling coatings on panel surfaces to reduce debris adhesion and facilitate natural cleaning
• Install bird deterrents and vegetation management around solar installations to prevent organic matter accumulation

The consistent solar production levels throughout the year at Senador La Rocque indicate that with proper installation techniques and maintenance practices, this location offers excellent potential for reliable solar energy generation. The tropical climate, while presenting some maintenance considerations, ultimately provides the consistent sunlight necessary for effective solar power production.

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 Senador La Rocque

Seasonal solar PV output for Latitude: -5.427, Longitude: -47.1752 (Senador La Rocque, 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 Senador La Rocque, Brazil

To maximize your solar PV system's energy output in Senador La Rocque, Brazil (Lat/Long -5.427, -47.1752) 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 Senador La Rocque, 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 Senador La Rocque, 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
10° South in Summer	12° North in Autumn	21° 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 Senador La Rocque, 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 Senador La Rocque, 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 Senador La Rocque, Brazil

Topographical Features of Senador La Rocque Region

The area surrounding Senador La Rocque in Maranhão state lies within the transition zone between the Amazon Basin and the Brazilian Highlands. This region is characterized by relatively flat to gently rolling terrain with elevations typically ranging from 200 to 400 meters above sea level. The landscape consists primarily of expansive plateaus interspersed with shallow valleys and occasional low hills. The topography is dominated by the Chapada das Mangabeiras, a vast plateau system that extends across this part of Maranhão. These plateaus feature broad, flat-topped surfaces with gentle slopes that drain toward the Tocantins River basin to the south and east. The terrain is generally stable with minimal steep gradients, making it well-suited for large-scale development projects. Vegetation in the region transitions from cerrado savanna to patches of tropical forest, with the landscape becoming increasingly open and less densely forested compared to areas further north toward the Amazon proper. The soil composition includes lateritic soils typical of the Brazilian cerrado, which provide good drainage characteristics.

Water Features and Drainage Patterns

The regional drainage system flows primarily toward the southeast, feeding into tributaries of the Tocantins River system. Small seasonal streams and creeks traverse the landscape, creating shallow valleys that break up the otherwise relatively uniform plateau surfaces. During the dry season, many of these waterways diminish significantly or cease flowing entirely. Several small reservoirs and farm ponds dot the landscape, primarily serving agricultural irrigation needs. The water table in this region varies but is generally accessible at moderate depths, which can be beneficial for maintenance operations at large installations.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for extensive solar photovoltaic installations would be the broad plateau surfaces that characterize much of the region around Senador La Rocque. These elevated flat areas offer several advantages including minimal grading requirements, excellent drainage, and reduced risk of flooding during the rainy season. The southeastern portions of the region, where the terrain opens up into wider expanses of cerrado savanna, present particularly favorable conditions. These areas combine optimal topographical features with reduced vegetation density, minimizing clearing requirements and environmental impact. The stable geological conditions of the underlying plateau structure provide excellent foundations for large-scale solar arrays. Areas to avoid would include the steeper slopes leading down from plateau edges and the narrow valley bottoms where seasonal flooding might occur. The transition zones between different elevation levels also tend to have more variable microclimates and drainage patterns that could complicate installation and maintenance activities. The prevailing wind patterns across these elevated plateaus help with natural cooling of solar equipment, while the open terrain allows for efficient layout of solar arrays with minimal shading concerns. Access to the region via existing agricultural roads provides a foundation for the transportation infrastructure needed during construction and ongoing operations.

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.