Brejinho, Rio Grande do Norte, Brazil is an excellent location for year-round solar energy generation, benefiting from its tropical position where consistent sunlight is available throughout most of the year with seasons typically defined by wet and dry periods rather than temperature variations.

Solar Energy Production Performance

The solar energy output at this location shows strong performance across all seasons, with spring delivering the highest production at 7.14 kWh per day per kW of installed solar capacity. Summer follows closely with 6.36 kWh/day, while autumn produces 5.95 kWh/day. Even during the lowest-producing season of winter, the location still generates a respectable 5.41 kWh/day per kW installed. Spring emerges as the ideal time for solar generation, producing approximately 32% more energy than the winter months. This seasonal variation of roughly 1.7 kWh/day between peak and minimum production demonstrates relatively stable year-round performance compared to many other global locations.

Optimal Panel Installation

For maximum year-round energy production, solar panels should be installed at a fixed tilt angle of 5 degrees facing North. This shallow angle optimizes the panels' exposure to the sun's path throughout the year, accounting for the location's proximity to the equator and the Earth's orbital variations.

Environmental and Weather Challenges

Several local factors could potentially impact solar energy production at Brejinho:

• Tropical rainfall: Heavy rains during wet seasons can reduce solar irradiance and create cloud cover that temporarily decreases energy output
• High humidity: Persistent moisture in the air may cause slight reductions in solar panel efficiency
• Dust and debris accumulation: Dry seasons combined with agricultural activities common in Brazilian rural areas can lead to dust buildup on panels
• Vegetation growth: The tropical climate promotes rapid plant growth that could create shading issues if not properly managed

Preventative Measures for Optimal Performance

To maximize solar energy production despite these challenges, several installation strategies should be considered: Regular cleaning schedules become essential, particularly during dry seasons when dust accumulation is highest. Installing panels with adequate spacing and elevation helps promote air circulation, reducing humidity-related efficiency losses. Proper drainage systems around solar installations prevent water pooling during heavy rains, while strategic vegetation management maintains clear sight lines to prevent shading. Consider using panels with anti-reflective coatings and robust weather sealing to withstand the tropical environment. Installing monitoring systems allows for quick identification of performance issues, while designing the system with slightly oversized capacity can compensate for occasional weather-related production decreases. These measures help ensure that Brejinho's excellent solar potential translates into consistent, reliable energy generation throughout the year.

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 Brejinho

Seasonal solar PV output for Latitude: -6.2367, Longitude: -35.4028 (Brejinho, 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 Brejinho, Brazil

To maximize your solar PV system's energy output in Brejinho, Brazil (Lat/Long -6.2367, -35.4028) 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 Brejinho, 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 Brejinho, 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 Brejinho, 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 Brejinho, 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 Brejinho, Brazil

Topographical Features of the Brejinho Region

Brejinho is located in the state of Rio Grande do Norte in northeastern Brazil, positioned within the Caatinga biome that characterizes much of the Brazilian interior. The topography around this municipality is predominantly flat to gently undulating, with elevations typically ranging from 200 to 400 meters above sea level. The landscape is characterized by broad, open plains interspersed with low hills and occasional rocky outcrops that are typical of the crystalline basement geology found throughout this part of the Brazilian Shield.

The terrain consists mainly of weathered crystalline rocks, creating a relatively stable geological foundation with gentle slopes and wide valleys. Small seasonal streams and dry creek beds, known locally as riachos, cut through the landscape, though these watercourses are often dry for extended periods due to the semi-arid climate. The soil composition varies from sandy to clay-rich areas, with frequent exposure of the underlying bedrock creating a mosaic of different surface conditions.

Vegetation in the region is sparse, consisting primarily of drought-adapted Caatinga scrubland with scattered thorny shrubs, cacti, and small trees. During dry periods, much of the vegetation becomes dormant, leaving large areas of relatively bare ground. The combination of low vegetation density and flat topography creates extensive open spaces with minimal shading from natural features.

Optimal Areas for Large-Scale Solar Development

The broad, flat plains extending to the north and west of Brejinho present the most favorable conditions for large-scale solar photovoltaic installations. These areas offer the advantage of minimal grading requirements and consistent terrain that would allow for standardized mounting systems across extensive arrays. The relatively stable geological foundation reduces concerns about ground movement that could affect solar panel alignment over time.

Areas with gentle southward-facing slopes would be particularly well-suited for solar development, as these orientations maximize solar exposure throughout the day. The low-lying valleys between the scattered hills provide natural wind corridors that could help with panel cooling, while still maintaining the flat terrain necessary for cost-effective installation.

The eastern portions of the municipality, where the terrain is most consistently flat and vegetation is naturally sparse, would require minimal land clearing and site preparation. These areas also tend to have better access to existing road networks, which would facilitate construction and maintenance activities for large solar installations.

Regions near the seasonal watercourses should generally be avoided for solar development, not only due to potential flooding concerns but also because these areas often support denser vegetation and may have softer, less stable soils. Similarly, the rockier outcrops and steeper hillsides, while offering good drainage, would present challenges for panel installation and maintenance access.

The agricultural areas surrounding Brejinho, particularly those used for extensive cattle grazing rather than intensive cultivation, could potentially accommodate dual-use solar installations. These locations often have existing infrastructure access and relatively level terrain that has already been partially cleared and maintained.

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.