Solar Energy Potential in Floriano, Piauí, Brazil

Floriano, Piauí, Brazil, located in the tropics at latitude -6.8334 and longitude -43.1309, offers excellent conditions for solar energy production throughout the year. This location benefits from its tropical positioning, where sunlight remains relatively consistent across seasons, with weather patterns more defined by wet and dry periods than significant changes in daylight duration. The solar energy generation potential in Floriano shows interesting seasonal variations. Winter actually provides the highest daily output at 6.70 kWh per kilowatt of installed capacity. Spring follows closely with 6.26 kWh/day, while autumn yields 5.89 kWh/day. Summer shows the lowest production at 5.09 kWh/day per kilowatt installed. For residents or businesses considering fixed solar panel installations in Floriano, Piauí, the ideal tilt angle to maximize year-round energy production is 8 degrees facing North. This carefully calculated angle optimizes solar capture throughout the year, accounting for the Earth's elliptical orbit and Floriano's specific tropical latitude.

Environmental and Weather Considerations

Several environmental factors could potentially affect solar production in Floriano:

• Seasonal rainfall: The region experiences a distinct wet season that can reduce solar efficiency through cloud cover and rain. Installing slightly larger systems can help compensate for reduced production during these periods.
• Dust and particulate matter: During dry seasons, dust accumulation on panels can significantly reduce efficiency. Regular cleaning schedules and possibly automated cleaning systems are recommended.
• High temperatures: Extreme heat can actually reduce solar panel efficiency. Using panels with good temperature coefficients and ensuring adequate airflow behind panels can mitigate this issue.

To maximize production despite these challenges, elevated mounting systems that allow for better airflow, regular maintenance schedules, and quality inverters that perform well in high temperatures are recommended. Additionally, monitoring systems can help identify any unexpected drops in performance that might indicate a need for panel cleaning or maintenance. The overall solar potential in Floriano remains excellent despite these considerations, with proper installation and maintenance practices ensuring optimal energy harvest 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 Floriano

Seasonal solar PV output for Latitude: -6.8334, Longitude: -43.1309 (Floriano, 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 Floriano, Brazil

To maximize your solar PV system's energy output in Floriano, Brazil (Lat/Long -6.8334, -43.1309) 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 Floriano, 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 Floriano, 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	14° North in Autumn	22° 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 Floriano, 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 Floriano, 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 Floriano, Brazil

The region surrounding Floriano, Brazil, located in the state of Piauí, presents a varied topographical landscape characteristic of the transition between the northeastern Caatinga and the Cerrado biomes. The terrain is predominantly characterized by gently rolling hills interspersed with flat plateaus, creating a mosaic of elevations that generally range between 100 and 300 meters above sea level. The Parnaíba River, one of Brazil's major waterways, flows along the western boundary of the region, carving wide valleys and floodplains. This river system has significantly influenced the local topography, creating alluvial terraces and sedimentary deposits throughout its course. The landscape features a combination of open grasslands, scattered tree formations, and shrubby vegetation adapted to the semi-arid climate conditions prevalent in this part of northeastern Brazil.

Terrain Features

Moving outward from Floriano, the terrain gradually rises toward the east, forming a series of plateaus and escarpments that mark the transition to higher elevations. These plateaus, locally known as "chapadas," feature relatively flat surfaces with abrupt edges, offering expansive vistas across the surrounding countryside. The western portions, closer to the Parnaíba River, tend to be lower in elevation and characterized by broader valleys and more gradual slopes. Seasonal watercourses cut across the landscape, forming shallow valleys that channel rainfall during the wet season. These intermittent streams contribute to the undulating character of the terrain, creating a network of minor depressions throughout the otherwise moderately flat topography.

Optimal Areas for Solar PV Development

For large-scale solar photovoltaic installations, the elevated plateaus east and southeast of Floriano present particularly favorable conditions. These areas combine several advantageous characteristics: relatively flat terrain that minimizes grading and site preparation costs; higher elevations that often experience less atmospheric dust and haze; and open expanses with minimal natural shading from vegetation or topographical features. The chapadas, with their extensive flat surfaces, offer ideal settings for solar array deployment, allowing for efficient arrangement of panels and supporting infrastructure. These elevated areas typically have good drainage characteristics, reducing concerns about seasonal flooding that might affect installations in lower-lying areas closer to the Parnaíba River. Areas approximately 20-30 kilometers east of Floriano, where the terrain rises to form broad plateaus, would be particularly well-suited for solar development. These locations combine favorable topography with sufficient distance from urban centers to allow for large-scale installations while maintaining reasonable proximity to existing transmission infrastructure. The northwestern sectors, while still viable, may present more topographical variation and proximity to the river system, potentially introducing additional environmental considerations for development. The southeastern quadrant, with its combination of elevation and relatively sparse vegetation cover, represents perhaps the optimal balance of topographical and practical considerations for major solar PV projects in the region.

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.