Raposa, Maranhão, Brazil represents an excellent location for year-round solar energy generation, with its tropical climate providing consistent sunlight throughout the year. Located at coordinates -2.4311, -44.078, this area benefits from the stable solar conditions typical of equatorial regions.

Solar Energy Production Performance

The solar energy output data for Raposa shows remarkably consistent performance across all seasons, with each kilowatt of installed solar panels producing:

• Summer: 5.31 kWh per day
• Autumn: 5.34 kWh per day
• Winter: 5.65 kWh per day
• Spring: 6.23 kWh per day

Spring emerges as the optimal season for solar generation, producing nearly 17% more energy than summer. Winter also performs exceptionally well, generating more power than the traditionally sunnier summer and autumn months. This unusual pattern likely reflects the region's tropical weather patterns, where wet and dry seasons have more impact on solar production than traditional temperature-based seasons.

Optimal Panel Installation

For maximum year-round energy production at this location, solar panels should be installed at a fixed tilt angle of 3 degrees facing North. This shallow angle is calculated to optimize total annual solar output by accounting for the sun's path throughout the year and the location's proximity to the equator.

Environmental and Weather Challenges

Several local factors could potentially impact solar energy production in Raposa and require careful consideration during installation planning. Humidity and Moisture pose the most significant challenge in this tropical coastal location. High humidity levels can cause condensation on solar panels, reducing their efficiency and potentially leading to corrosion of electrical components over time. Additionally, the proximity to the Atlantic Ocean means salt-laden air can accelerate corrosion of metal mounting systems and electrical connections. Seasonal Rainfall during wet seasons can temporarily reduce solar output due to cloud cover, though the data suggests this impact may be less severe than in other climates. Heavy tropical downpours can also create issues with water pooling if drainage is inadequate. Dust and Debris Accumulation during dry periods can coat panel surfaces, reducing their ability to capture sunlight effectively. In tropical environments, organic matter like bird droppings, leaves, and pollen can also build up on panels.

Preventative Installation Measures

Several strategies can help maximize solar energy production despite these environmental challenges. Corrosion-Resistant Materials are essential for this coastal tropical environment. Using marine-grade aluminum or stainless steel mounting systems, along with electrical components rated for high-humidity environments, will ensure long-term reliability and performance. Proper Drainage Design should incorporate adequate spacing between panels and mounting systems to allow rainwater to flow freely without pooling. The shallow 3-degree tilt angle actually helps with self-cleaning during rainfall while still optimizing energy production. Enhanced Sealing and Protection of all electrical connections using marine-grade sealants and junction boxes rated for tropical conditions will prevent moisture intrusion that could cause system failures. Regular Maintenance Scheduling becomes particularly important in this environment. Installing easily accessible mounting systems and planning for periodic cleaning will help maintain optimal performance throughout the year. The consistent and strong solar energy production potential at Raposa makes it an ideal location for solar installations, provided that proper attention is paid to the tropical marine environment during system design and installation.

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 Raposa

Seasonal solar PV output for Latitude: -2.4311, Longitude: -44.078 (Raposa, 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 3° North in Raposa, Brazil

To maximize your solar PV system's energy output in Raposa, Brazil (Lat/Long -2.4311, -44.078) throughout the year, you should tilt your panels at an angle of 3° 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 Raposa, 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 Raposa, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 3° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
14° South in Summer	9° North in Autumn	18° North in Winter	4° 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 Raposa, 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 Raposa, 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 Raposa, Brazil

Topographical Features of Raposa Region

Raposa, located in the northeastern state of Maranhão, Brazil, sits within a predominantly flat coastal plain characterized by gentle undulations and minimal elevation changes. The terrain around this municipality consists largely of sedimentary formations that create a relatively uniform landscape with elevations rarely exceeding 50 meters above sea level. This low-lying topography extends inland from the Atlantic coastline, forming part of the broader Maranhão coastal lowlands.

The region features a mix of natural vegetation zones, including areas of cerrado savanna and coastal forest remnants, interspersed with agricultural lands and pastures. Small streams and seasonal watercourses meander through the landscape, creating subtle valleys and drainage patterns that add minor variations to the otherwise level terrain. The soil composition primarily consists of sandy and clay-based sediments, typical of coastal plain environments.

Rolling hills become more prominent as one moves further inland from Raposa, particularly toward the south and southwest, where the elevation gradually increases. These gentle rises in the landscape create natural boundaries between different land use zones and provide slight variations in microclimates across the region.

Optimal Areas for Large-Scale Solar Development

The expansive flat areas located southwest and south of Raposa present excellent opportunities for large-scale solar photovoltaic installations. These zones benefit from minimal slope variations, which reduces construction complexity and allows for efficient panel arrangement and maintenance access. The relatively sparse population density in these inland areas also means fewer land use conflicts and potentially lower acquisition costs.

Areas approximately 15 to 30 kilometers inland from the immediate coastal zone offer particularly favorable conditions, as they maintain the beneficial flat topography while avoiding potential issues related to salt air corrosion and extreme coastal weather events. These locations typically feature cleared or lightly vegetated land that has been used for agriculture or cattle grazing, making site preparation more straightforward.

The gently elevated plateaus found in the southern portions of the region provide additional advantages for solar development. These slightly higher elevations offer improved drainage characteristics and reduced risk of seasonal flooding, while maintaining the level surfaces necessary for efficient solar array installation. The stable geological conditions in these areas also support the foundation requirements for large-scale solar infrastructure.

Transportation infrastructure accessibility represents another crucial factor, with areas near existing roads and potential grid connection points offering the most practical development potential. The relatively open landscape allows for flexible site selection while maintaining reasonable distances to necessary infrastructure connections.

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.