Picos, Piauí, Brazil offers excellent conditions for year-round solar energy generation. Located in the tropical region at coordinates -7.107, -41.5126, this area benefits from consistent sunlight throughout most of the year, with seasonal variations defined more by wet and dry periods than traditional temperature-based seasons.

Solar Energy Production Potential

The solar energy output data for Picos demonstrates impressive and consistent performance across all seasons. A solar PV installation can expect to generate 5.60 kWh per day per kW of installed capacity during summer, increasing to 6.11 kWh/day in autumn, 6.57 kWh/day in winter, and reaching peak performance of 7.06 kWh/day during spring. Spring emerges as the optimal season for solar generation at this location, producing approximately 26% more energy than the lowest-performing summer season. This seasonal variation is relatively modest compared to many other global locations, making Picos an attractive option for consistent year-round solar energy production. For maximum energy output from a fixed panel installation at this location, solar panels should be tilted at 8 degrees facing north. This optimal angle is calculated by analyzing daily solar elevation angles throughout the year, weighted by solar irradiance data to maximize total annual production.

Environmental and Weather Challenges

Several local factors could potentially impact solar energy production in Picos and require careful consideration during installation planning. The tropical climate brings distinct wet and dry seasons, with the wet season presenting the most significant challenge for solar installations. Heavy rainfall and increased cloud cover during wet periods can reduce solar irradiance and energy output. Additionally, frequent storms may bring strong winds and potential hail, which could damage solar equipment if not properly secured. High humidity levels throughout the year can accelerate corrosion of metal components and electrical connections. The consistently warm temperatures, while beneficial for year-round operation, can also reduce solar panel efficiency, as photovoltaic cells typically perform less efficiently at higher temperatures. Dust accumulation presents another concern, particularly during drier periods. Saharan dust, which can travel across the Atlantic to reach northeastern Brazil, may settle on solar panels and reduce their efficiency. Local dust from unpaved roads and agricultural activities can also contribute to this issue.

Preventative Installation Measures

Several strategies can help maximize solar energy production despite these environmental challenges:

• Install panels with proper drainage systems and adequate spacing to prevent water pooling during heavy rains
• Use corrosion-resistant materials and protective coatings on all metal components to withstand high humidity
• Implement robust mounting systems designed to withstand tropical storm conditions and high winds
• Establish regular cleaning schedules to remove dust and debris, particularly important during dry seasons
• Consider panels with better high-temperature performance characteristics to maintain efficiency in warm conditions

Proper ventilation around solar panels helps reduce operating temperatures and maintain optimal efficiency. Installing monitoring systems allows for quick identification of performance issues related to weather or environmental factors. Despite these potential challenges, Picos remains a highly favorable location for solar energy generation due to its consistent tropical sunlight and relatively stable seasonal performance. With appropriate installation techniques and maintenance practices, solar PV systems can achieve excellent energy production throughout the year at this location.

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 Picos

Seasonal solar PV output for Latitude: -7.107, Longitude: -41.5126 (Picos, 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 Picos, Brazil

To maximize your solar PV system's energy output in Picos, Brazil (Lat/Long -7.107, -41.5126) 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 Picos, 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 Picos, 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	23° North in Winter	2° 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 Picos, 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 Picos, 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 Picos, Brazil

Topography and Terrain Around Picos

Picos sits in the southeastern region of Piauí state in northeastern Brazil, positioned within the Caatinga biome. The city is located in a transitional zone where the relatively flat tablelands of the Brazilian interior begin to give way to more varied terrain. The surrounding landscape is characterized by gently rolling plains interspersed with low hills and occasional rocky outcroppings typical of the semi-arid region.

The elevation around Picos ranges from approximately 200 to 400 meters above sea level, with the terrain generally sloping toward the northeast. The area features expansive stretches of relatively level ground broken by shallow valleys and seasonal watercourses that flow during the rainy season. These plains are covered primarily by Caatinga vegetation, consisting of drought-resistant shrubs, small trees, and cacti that have adapted to the region's semi-arid climate.

Rocky formations and small mesas dot the landscape, remnants of ancient geological processes that have created a mosaic of flat areas and gentle undulations. The soil composition varies from sandy to clay-rich depending on location, with many areas featuring the reddish lateritic soils common throughout northeastern Brazil's interior.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations around Picos would be the extensive flat to gently sloping plains that dominate the region. These areas offer several advantages for solar development, including minimal grading requirements, reduced installation costs, and optimal panel positioning. The relatively sparse vegetation in many of these zones would require minimal clearing compared to more densely forested regions.

Areas to the north and northeast of Picos present particularly favorable conditions, where the terrain consists of broad, open plains with gentle gradients that would allow for efficient panel layout and maintenance access. These locations benefit from minimal shading obstacles and consistent topographical conditions across large areas, making them ideal for utility-scale solar farms.

The elevated plateaus and mesa tops in the region also present excellent opportunities for solar installations. These naturally elevated positions often feature level surfaces with good drainage and reduced risk of flooding during seasonal rains. The elevation provides additional benefits including improved air circulation around panels and potentially reduced dust accumulation compared to lower-lying areas.

Areas near existing infrastructure, particularly those accessible via the BR-316 highway and other regional roads, would be most practical for development. The relatively stable geological conditions and low seismic activity in the region provide a secure foundation for long-term solar installations. The sparse population density in the surrounding rural areas means large tracts of suitable land are potentially available for development with minimal displacement or land use conflicts.

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.