Marcelino Vieira, Rio Grande do Norte, Brazil represents an excellent location for year-round solar photovoltaic energy generation. Located in the tropics at coordinates -6.3226, -38.142, this area benefits from consistent sunlight throughout most of the year, with seasons characterized more by wet and dry periods rather than significant temperature variations.

Solar Energy Output Performance

The solar energy production data for this location shows remarkably consistent and high performance across all seasons. The expected electricity output per kilowatt of installed solar capacity demonstrates strong year-round viability:

• Summer: 6.25 kWh per day per kW installed
• Autumn: 6.37 kWh per day per kW installed
• Winter: 6.32 kWh per day per kW installed
• Spring: 7.45 kWh per day per kW installed

Spring emerges as the ideal season for solar generation at this location, producing nearly 20% more energy than other seasons. The relatively small variation between the other three seasons indicates that solar panels will provide reliable energy output throughout most of the year.

Optimal Panel Installation

For maximum year-round solar production at Marcelino Vieira, Rio Grande do Norte, fixed solar panels should be tilted at an angle of 6 degrees North. This optimal angle is calculated by analyzing daily solar elevation angles at this latitude, determining daily optimal panel tilt angles, and weighting these angles according to daily photovoltaic potential using solar irradiance data while accounting for Earth's elliptical orbit.

Environmental and Weather Considerations

Several local factors could potentially impact solar production at this location, though the consistently high output suggests these are manageable challenges. Dust and Particulate Matter: The semi-arid climate typical of this region of Brazil can generate significant dust accumulation on solar panels, particularly during dry seasons. Dust buildup can reduce panel efficiency by 10-25% if left unaddressed. Regular cleaning schedules, ideally monthly during dry periods, can maintain optimal performance. Installing panels with self-cleaning coatings or automated washing systems can provide long-term solutions. Seasonal Rainfall Patterns: While the wet season provides natural panel cleaning, heavy rains can temporarily reduce solar output due to cloud cover. However, the data shows this impact is minimal, as even the lowest-producing seasons still generate over 6 kWh per day per kW. Proper drainage systems around solar installations prevent water pooling and potential electrical issues. High Temperatures: Tropical locations experience elevated temperatures that can reduce solar panel efficiency, as photovoltaic cells typically lose 0.4-0.5% efficiency per degree Celsius above 25°C. Installing panels with adequate ventilation spacing, using temperature-resistant panel technologies, and ensuring proper mounting systems that allow air circulation can mitigate heat-related efficiency losses. The consistently high solar output throughout all seasons at Marcelino Vieira indicates that any environmental challenges are outweighed by the location's excellent solar resource, making it highly suitable for solar energy projects.

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 Marcelino Vieira

Seasonal solar PV output for Latitude: -6.3226, Longitude: -38.142 (Marcelino Vieira, 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 Marcelino Vieira, Brazil

To maximize your solar PV system's energy output in Marcelino Vieira, Brazil (Lat/Long -6.3226, -38.142) 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 Marcelino Vieira, 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 Marcelino Vieira, 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
9° South in Summer	12° North in Autumn	22° North in Winter	0° 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 Marcelino Vieira, 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 Marcelino Vieira, 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 Marcelino Vieira, Brazil

Topographical Features of the Marcelino Vieira Region

Marcelino Vieira sits within the semi-arid landscape of Rio Grande do Norte state in northeastern Brazil, positioned in the interior highlands known as the Borborema Plateau. This elevated region features gently rolling hills and broad plateaus that rise between 200 and 600 meters above sea level. The terrain is characterized by weathered crystalline rocks and ancient geological formations that have been sculpted over millions of years into relatively flat-topped elevations separated by shallow valleys.

The landscape around Marcelino Vieira displays the typical features of Brazil's Caatinga biome, with sparse vegetation adapted to the dry climate. The topography consists of undulating plains punctuated by occasional rocky outcrops and low mountain ridges. These elevated areas provide excellent drainage and are generally free from the seasonal flooding that can affect lower-lying regions during the brief rainy periods.

The region's geological foundation is primarily composed of Precambrian crystalline basement rocks, including granites and gneisses, which create stable ground conditions. This solid bedrock foundation, combined with the generally flat to gently sloping terrain, provides ideal conditions for large-scale infrastructure development. The area experiences minimal seismic activity and has low risk of geological instability.

Optimal Areas for Large-Scale Solar Development

The elevated plateau areas surrounding Marcelino Vieira present exceptional opportunities for large-scale solar photovoltaic installations. The broad, flat-topped mesas and gentle slopes of the Borborema Plateau offer extensive areas of relatively level ground that require minimal site preparation for solar panel arrays. These elevated positions also benefit from consistent wind patterns that help keep solar panels cool and operating efficiently.

The most suitable locations for major solar developments lie on the plateau surfaces to the north and east of the town, where large contiguous areas of relatively flat terrain extend for several kilometers. These areas combine optimal topographical conditions with minimal competing land uses, as the semi-arid climate limits intensive agriculture in the region. The stable geological conditions mean that ground-mounted solar installations can be securely anchored without concerns about subsidence or shifting.

Areas with gentle south-facing slopes are particularly advantageous for solar installations, as they naturally optimize panel orientation for maximum solar exposure throughout the day. The region's elevated position above surrounding valleys also reduces concerns about fog, moisture accumulation, and atmospheric haze that can reduce solar panel efficiency in lower-lying areas.

The sparse vegetation and low population density across much of the plateau region minimize environmental and social conflicts that might arise from large-scale solar development. The open landscape allows for easy access for construction equipment and ongoing maintenance operations, while the proximity to existing road networks facilitates connection to electrical transmission infrastructure.

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.