Queimada Nova, Piauí, Brazil presents an excellent location for year-round solar energy generation. Located in the tropical region at coordinates -8.537, -41.2479, this area benefits from consistent sunlight throughout the year, with seasons typically defined by wet and dry periods rather than significant temperature variations.

Solar Energy Production Potential

The solar energy output data reveals strong and consistent performance across all seasons. Winter produces 6.46 kWh per day per kW of installed solar capacity, while summer generates 5.87 kWh per day per kW. Autumn shows 6.18 kWh per day per kW, and spring delivers the highest output at 7.05 kWh per day per kW. Spring emerges as the optimal season for solar generation at this location, producing approximately 20% more energy than the lowest-performing summer months. This seasonal variation is relatively modest compared to locations at higher latitudes, making Queimada Nova highly suitable for consistent year-round solar energy production. For maximum efficiency with a fixed panel installation at this location, solar panels should be tilted at 9 degrees toward the north. This optimal angle is calculated by analyzing daily solar elevation angles, determining optimal panel positioning, and weighting these factors using solar irradiance data to maximize total annual energy production.

Environmental and Weather Challenges

Several local factors could potentially impact solar energy production in this tropical location:

• Dust accumulation during dry seasons can significantly reduce panel efficiency
• Heavy rainfall and high humidity during wet seasons may affect system components
• Intense tropical sunlight can cause thermal stress on solar panels
• Potential for severe weather events including strong winds and hail

Preventative Measures for Optimal Performance

To maximize energy production and system longevity, several installation strategies should be considered: Regular cleaning schedules become essential during dry periods when dust accumulation peaks. Installing panels with adequate spacing allows for proper air circulation, helping to manage the thermal stress from intense tropical sunlight. This ventilation also helps prevent overheating, which can reduce panel efficiency. Robust mounting systems designed to withstand strong winds and severe weather are crucial. Using corrosion-resistant materials helps combat the effects of high humidity and frequent rainfall typical of tropical climates. Implementing proper drainage around ground-mounted systems prevents water accumulation during heavy rains. For optimal maintenance access, designing systems with easy cleaning capabilities ensures panels can be regularly maintained to remove dust, debris, and any biological growth that might occur in the humid environment. Quality inverters and electrical components rated for tropical conditions will better handle temperature fluctuations and humidity levels. Regular monitoring systems can help identify performance issues early, allowing for prompt maintenance that keeps the solar installation operating at peak efficiency 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 Queimada Nova

Seasonal solar PV output for Latitude: -8.537, Longitude: -41.2479 (Queimada Nova, 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 9° North in Queimada Nova, Brazil

To maximize your solar PV system's energy output in Queimada Nova, Brazil (Lat/Long -8.537, -41.2479) throughout the year, you should tilt your panels at an angle of 9° 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 Queimada Nova, 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 Queimada Nova, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 9° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
7° South in Summer	15° North in Autumn	24° North in Winter	3° 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 Queimada Nova, 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 Queimada Nova, 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 Queimada Nova, Brazil

Topographical Characteristics of Queimada Nova

Queimada Nova sits within the Caatinga region of northeastern Brazil, characterized by a semi-arid landscape that forms part of the broader Brazilian Highlands. The terrain around this municipality in Piauí state features gently rolling hills and elevated plateaus, with elevations typically ranging from 400 to 600 meters above sea level. The topography is generally undulating rather than dramatically mountainous, creating a landscape of moderate slopes interspersed with flatter valley areas.

The region exhibits the classic features of the Caatinga biome, with sparse vegetation consisting primarily of drought-resistant shrubs and small trees. During dry periods, much of the vegetation becomes dormant, leaving expanses of relatively open terrain. The soil composition is predominantly sandy and rocky, with areas of exposed bedrock common throughout the landscape. Seasonal streams and small rivers cut through the terrain, creating shallow valleys and drainage channels that remain dry for much of the year.

Optimal Areas for Large-Scale Solar Development

The elevated plateau areas surrounding Queimada Nova present the most promising locations for large-scale solar photovoltaic installations. These higher elevation zones offer several advantages, including relatively flat to gently sloping terrain that minimizes the need for extensive grading and reduces installation costs. The sparse vegetation coverage in these areas means minimal environmental disruption and lower land preparation requirements.

The mesa-like formations and broad ridgetops found throughout the region provide extensive flat surfaces ideal for solar array deployment. These elevated positions also benefit from improved air circulation, which helps maintain optimal operating temperatures for photovoltaic panels. The rocky substrate in many of these areas offers stable foundations for mounting systems while the well-drained soils prevent water accumulation that could interfere with installations.

Areas to the south and southwest of Queimada Nova appear particularly well-suited for solar development, where the terrain opens into broader, flatter expanses with minimal topographical obstacles. These zones combine the benefits of stable ground conditions with reduced shading concerns due to the open landscape. The existing road network in the region provides reasonable access to many of these potential sites, though some infrastructure development would likely be necessary for large-scale projects.

Valley floors and drainage areas should generally be avoided for solar installations due to their tendency to collect water during the rainy season and their potential for flash flooding. The steeper hillsides, while offering good solar exposure, may require more extensive earthwork and present challenges for equipment access and maintenance operations.

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.