Goianinha, Rio Grande do Norte, Brazil represents an excellent location for year-round solar energy generation. Situated in the tropical region at coordinates -6.271, -35.184, this area benefits from consistent sunlight throughout the year, with seasonal variations being more defined by wet and dry periods rather than traditional temperature-based seasons.

Solar Energy Output Performance

The solar energy production data for Goianinha demonstrates strong and reliable performance across all seasons. Spring emerges as the most productive period, generating 7.14 kWh per day for each kW of installed solar capacity. Summer follows closely with 6.36 kWh/day per kW, while autumn produces 5.95 kWh/day per kW. Even during the lowest-producing season of winter, the location still generates a respectable 5.41 kWh/day per kW. This seasonal pattern shows that Goianinha experiences only modest fluctuations in solar output throughout the year, with the difference between the highest and lowest producing seasons being just 1.73 kWh/day per kW. Such consistency makes this location highly suitable for solar installations that require predictable energy production.

Optimal Panel Configuration

For maximum year-round solar energy production in Goianinha, Rio Grande do Norte, solar panels should be installed at a fixed tilt angle of 5 degrees facing North. This relatively shallow angle is calculated to optimize total annual energy output by accounting for the sun's path throughout the year at this specific latitude, considering factors such as daily solar elevation angles and Earth's elliptical orbit patterns.

Environmental and Weather Considerations

Several local factors could potentially impact solar energy production in Goianinha, Rio Grande do Norte, though most can be effectively managed with proper installation practices:

• Tropical rainfall and humidity: The wet season brings heavy rainfall and high humidity levels that can reduce panel efficiency and create maintenance challenges
• Dust and debris accumulation: Dry periods may lead to dust buildup on panel surfaces, reducing light transmission and energy output
• Salt air exposure: Given the coastal proximity of the region, salt-laden air could cause corrosion issues over time
• Vegetation growth: The tropical climate promotes rapid plant growth that could create shading issues if not properly managed

Preventative Installation Measures

To maximize solar energy production and system longevity in Goianinha's tropical environment, several installation strategies should be implemented. Panels should be mounted with adequate spacing to promote air circulation and cooling, as excessive heat can reduce efficiency. Installing panels at the recommended 5-degree tilt also helps facilitate natural cleaning during rainfall. Using marine-grade mounting hardware and corrosion-resistant materials will protect against salt air damage. Regular maintenance schedules should include panel cleaning during dry periods and vegetation management to prevent shading. Additionally, installing monitoring systems can help identify performance issues early, ensuring optimal energy production throughout the system's lifespan. The tropical location's consistent solar resource, combined with proper installation techniques and maintenance practices, makes Goianinha an ideal candidate for solar energy projects seeking reliable, year-round electricity generation.

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 Goianinha

Seasonal solar PV output for Latitude: -6.271, Longitude: -35.184 (Goianinha, 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 5° North in Goianinha, Brazil

To maximize your solar PV system's energy output in Goianinha, Brazil (Lat/Long -6.271, -35.184) throughout the year, you should tilt your panels at an angle of 5° 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 Goianinha, 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 Goianinha, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 5° 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	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 Goianinha, 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 Goianinha, 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 Goianinha, Brazil

Topographical Features of Goianinha Region

Goianinha sits in the coastal region of Rio Grande do Norte state in northeastern Brazil, positioned approximately 50 kilometers south of the capital city Natal. The topography around this municipality is characterized by relatively gentle, rolling terrain that forms part of the broader coastal plain extending inland from the Atlantic Ocean. The landscape consists primarily of low hills and shallow valleys, with elevations typically ranging from 20 to 80 meters above sea level.

The terrain gradually rises as one moves westward from the coast, creating a series of undulating plateaus interspersed with small river valleys and seasonal watercourses. The Trairi River system influences much of the local topography, carving modest valleys through the landscape as it flows toward the Atlantic. These river valleys create natural drainage patterns that have shaped the surrounding hills into rounded, weathered formations typical of the region's sedimentary geology.

The coastal influence extends well inland, creating relatively flat to gently sloping terrain that becomes more pronounced moving away from the ocean. Sandy soils dominate much of the area, interspersed with clay deposits in lower-lying areas where seasonal water accumulation occurs. The landscape lacks significant mountainous features or steep escarpments, instead presenting a generally accessible terrain with moderate elevation changes.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations around Goianinha would be the elevated plateau areas located to the west and southwest of the municipality. These areas offer several topographical advantages, including consistent gentle slopes that facilitate proper drainage while maintaining relatively flat surfaces ideal for solar panel arrays. The higher elevations in these zones also provide better air circulation, which can help maintain optimal operating temperatures for photovoltaic equipment.

The areas northwest of Goianinha, particularly those situated between the municipality and the BR-101 highway corridor, present excellent opportunities for solar development. This region features stable, well-drained terrain with minimal flooding risk and good accessibility for construction and maintenance activities. The topography here consists of broad, gently sloping surfaces that would minimize earthwork requirements during installation.

Areas to avoid for large-scale solar installations include the lower-lying valleys associated with the Trairi River system and other seasonal watercourses. These zones experience periodic flooding during the rainy season and may have unstable soil conditions unsuitable for heavy infrastructure. Additionally, the immediate coastal areas, while relatively flat, may present challenges due to salt air exposure and potential storm surge impacts.

The terrain south and southwest of Goianinha offers particularly promising conditions, where the landscape opens into broader, more uniform slopes with excellent southern exposure. These areas benefit from stable geological conditions, good drainage characteristics, and sufficient elevation to avoid most flooding concerns while remaining accessible for large-scale development projects.

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.