Paraibano, Maranhão, Brazil presents an excellent location for year-round solar photovoltaic energy generation. Located in the tropical region at coordinates -6.4095, -43.8471, this area benefits from the consistent sunlight patterns typical of equatorial zones where seasonal variations are primarily defined by wet and dry periods rather than dramatic temperature changes.

Solar Energy Production Throughout the Year

The solar energy output at Paraibano demonstrates strong performance across all seasons, with some interesting seasonal variations. During summer months, the location generates 5.09 kWh per day for each kilowatt of installed solar capacity. Production increases significantly in autumn to 5.89 kWh/day per kW, reaching its peak during winter at 6.70 kWh/day per kW, before settling to 6.26 kWh/day per kW in spring. Winter emerges as the optimal season for solar generation at this location, producing approximately 32% more energy than the summer months. This pattern is typical for locations in the Southern Hemisphere tropics, where winter months often provide clearer skies and optimal sun angles for energy production.

Optimal Panel Installation

For maximum year-round energy production, solar panels at Paraibano should be installed at a fixed tilt angle of 8 degrees North. This relatively shallow angle reflects the location's proximity to the equator, where the sun travels high overhead throughout most of the year. The optimal angle calculation considers the weighted average of daily solar elevation angles throughout the year, accounting for Earth's elliptical orbit and seasonal variations in solar irradiance.

Environmental and Weather Challenges

Several local factors could potentially impact solar energy production at this tropical location. The primary concerns include:

• Heavy rainfall during wet seasons that can reduce solar irradiance and create temporary shading
• High humidity levels that may accelerate corrosion of electrical components
• Dust and debris accumulation on panel surfaces, particularly during dry periods
• Potential for severe tropical weather events including strong winds

Preventative Measures for Enhanced Performance

To maximize solar energy production despite these challenges, several installation strategies prove effective. Regular cleaning schedules become essential, particularly during dry seasons when dust accumulation peaks. Installing panels with adequate drainage and using corrosion-resistant mounting hardware helps combat the effects of high humidity and heavy rainfall. Proper ventilation around solar installations prevents moisture buildup while ensuring panels operate at optimal temperatures. Using high-quality inverters and electrical components rated for tropical conditions extends system lifespan and maintains consistent performance. Storm-resistant mounting systems designed to withstand high winds provide crucial protection during severe weather events. Additionally, installing monitoring systems allows for quick identification and resolution of performance issues that may arise from environmental factors. Overall, Paraibano represents a highly favorable location for solar energy generation, with the potential challenges being manageable through proper installation techniques and regular maintenance protocols.

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 Paraibano

Seasonal solar PV output for Latitude: -6.4095, Longitude: -43.8471 (Paraibano, 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 8° North in Paraibano, Brazil

To maximize your solar PV system's energy output in Paraibano, Brazil (Lat/Long -6.4095, -43.8471) throughout the year, you should tilt your panels at an angle of 8° 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 Paraibano, 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 Paraibano, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 8° 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	13° North in Autumn	22° North in Winter	1° North 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 Paraibano, 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 Paraibano, 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 Paraibano, Brazil

Topographical Features of the Paraibano Region

The area around Paraibano in Brazil sits within the northeastern region of the country, characterized by relatively flat to gently rolling terrain typical of the Caatinga biome. This location falls within the semi-arid interior of the Northeast, where the landscape consists primarily of low-lying plains interspersed with occasional hills and ridges. The elevation in this region generally ranges from approximately 200 to 400 meters above sea level, creating a moderately elevated plateau that extends across much of the surrounding territory. The terrain features gentle undulations rather than steep slopes, with broad valleys and low hills creating a landscape that appears relatively uniform from a distance. Scattered throughout the area are small elevated formations and mesa-like structures that rise modestly above the surrounding plains. These geological features are remnants of ancient erosional processes that have shaped the region over millions of years. Vegetation in the area consists mainly of thorny scrubland and sparse trees adapted to the dry climate, with patches of more open ground where the natural vegetation has been cleared or is naturally less dense. The soil composition varies from sandy to clay-based, with areas of exposed rock and hardpan surfaces that are common throughout the northeastern Brazilian interior.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations in this region would be the expansive flat to gently sloping areas that dominate the landscape. These broad plains offer several advantages for solar development, including minimal grading requirements and the ability to install panels with consistent orientation across large areas without significant topographical obstacles. The slightly elevated plateau areas present particularly attractive opportunities, as they tend to have good drainage characteristics and are less prone to flooding during the rainy season. These elevated zones also typically experience better air circulation, which can help maintain optimal operating temperatures for solar panels. Areas with sparse natural vegetation and harder soil surfaces would require less environmental clearing and ground preparation, making them more cost-effective for development. The open spaces between the scattered hills and ridges provide excellent opportunities for large solar arrays, as they offer substantial contiguous areas without significant shading from topographical features. The gentle slopes found throughout the region, particularly those with southern exposure, could be advantageous for solar installations as they can be oriented to maximize solar collection while maintaining good drainage. However, the relatively flat nature of most of the terrain means that ground-mounted systems with adjustable tracking capabilities would likely be the most effective approach for maximizing energy capture across the varied microtopography of the area.

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.