Solar Energy Potential in Pires do Rio, Brazil

Pires do Rio, Brazil, presents an excellent location for solar energy generation throughout the year. Situated in the tropics at latitude -17.3471 and longitude -48.3904, this location benefits from relatively consistent sunlight patterns that make it suitable for solar photovoltaic (PV) installations. The seasonal energy output shows impressive consistency. During summer months, solar panels can generate approximately 6.61 kWh per day for each kilowatt of installed capacity. This drops slightly to 6.02 kWh/day during autumn and reaches its lowest point in winter at 5.73 kWh/day. Spring brings a recovery to 6.30 kWh/day. This minimal seasonal variation (less than 1 kWh/day difference between the highest and lowest seasons) demonstrates the location's reliability for solar energy production year-round.

Optimal Installation Angle

For fixed solar panel installations in Pires do Rio, the ideal tilt angle to maximize year-round energy production is 17 degrees facing North. This specific angle has been calculated to optimize solar capture throughout the year, accounting for the Earth's elliptical orbit and the site's tropical location.

Environmental and Weather Considerations

Despite the favorable conditions, several factors could potentially impact solar production at this location:

• Dust and pollen accumulation: The region's dry seasons can lead to dust build-up on panels, reducing efficiency by up to 25% if not regularly cleaned.
• Heavy rainfall during wet seasons: While rain can naturally clean panels, extremely heavy downpours common in tropical regions may be accompanied by debris that could damage installations.
• Potential for lightning strikes: Tropical regions often experience thunderstorms, requiring proper grounding and surge protection systems.

Preventative Measures

To maximize energy production and protect the investment, several preventative measures should be considered:

• Implement a regular cleaning schedule, particularly during dry seasons
• Install robust mounting systems designed to withstand tropical storms
• Use lightning arrestors and proper grounding systems
• Consider semi-automated cleaning systems for larger installations
• Select PV panels rated for high-temperature performance, as tropical regions can experience significant heat

Overall, Pires do Rio offers an excellent location for solar energy generation with minimal seasonal variation in output. With proper installation techniques and maintenance protocols that address the specific environmental challenges of the region, solar PV systems can provide reliable, consistent energy production throughout the entire 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 Pires Do Rio

Seasonal solar PV output for Latitude: -17.3471, Longitude: -48.3904 (Pires Do Rio, 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 17° North in Pires Do Rio, Brazil

To maximize your solar PV system's energy output in Pires Do Rio, Brazil (Lat/Long -17.3471, -48.3904) throughout the year, you should tilt your panels at an angle of 17° 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 Pires Do Rio, 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 Pires Do Rio, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 17° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
1° North in Summer	23° North in Autumn	33° North in Winter	12° 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 Pires Do Rio, 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 Pires Do Rio, 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 Pires Do Rio, Brazil

The landscape around Pires do Rio in the state of Goiás, Brazil presents a diverse topographical profile characteristic of Brazil's Central Plateau region. This area sits within the Brazilian Highlands, featuring gently rolling hills, open plateaus, and shallow valleys. The terrain generally ranges from approximately 700 to 900 meters above sea level, creating a moderately elevated landscape that transitions between different ecological zones. The region exhibits what locals often refer to as "chapadas" - wide, flat-topped plateaus that extend across significant portions of the surrounding countryside. These elevated plains are interrupted by gradual slopes and occasional more pronounced ridges. The Corumbá River and its tributaries have carved shallow valleys throughout the area, creating natural drainage systems that have shaped the local topography over millennia.

Vegetation and Land Cover

The natural vegetation around Pires do Rio represents a transition zone between Brazil's Cerrado (savanna) biome and more forested regions. Much of the original Cerrado vegetation has been modified through agricultural development, with large portions converted to farmland and pasture. The remaining natural areas feature scattered drought-resistant trees with twisted trunks, shrublands, and grasslands that have adapted to the region's seasonal rainfall patterns.

Solar PV Potential Areas

Several characteristics of the Pires do Rio region make certain areas particularly suitable for large-scale solar photovoltaic development. The most promising locations for solar installations include: The elevated plateau areas ("chapadas") surrounding the municipality offer ideal conditions for solar energy capture. These flat or gently sloping highlands provide excellent exposure to sunlight throughout the day, with minimal shadowing effects from surrounding terrain. The stable soil conditions on these plateaus also simplify construction and installation processes. Agricultural lands that have already been cleared of native vegetation represent opportunities for dual-use solar development. The relatively flat, open farmland north and east of the city center provides substantial contiguous areas where solar arrays could be deployed with minimal additional land clearing required. The slightly elevated ridgelines running northwest to southeast of the city offer good solar exposure while potentially reducing the impact on prime agricultural lands. These areas typically have thinner soils less suited for intensive farming but provide stable foundations for solar infrastructure.

Topographical Considerations for Solar Development

When evaluating specific sites around Pires do Rio for solar PV development, several topographical factors merit consideration. The gentle slopes facing northward (in the southern hemisphere) receive more direct sunlight throughout the year, maximizing energy production potential. Areas with slopes between 1-5% provide natural drainage while minimizing earthwork requirements during construction. The region's moderate elevation contributes to slightly cooler temperatures compared to lower-lying areas of Brazil, which can benefit photovoltaic efficiency. Solar panels generally perform better in cooler conditions, making the elevated plateaus particularly advantageous. Water management represents an important consideration in this landscape. The shallow valleys formed by seasonal waterways should generally be avoided for major installations, both to prevent potential flooding risks and to preserve these natural drainage corridors. The higher plateau areas not only avoid these water-related challenges but also typically experience less morning fog or mist that might temporarily reduce solar efficiency. The existing road network connecting to major highways provides good accessibility to many of the topographically suitable areas, particularly along the BR-050 corridor that passes near Pires do Rio. This infrastructure advantage reduces development costs and simplifies maintenance access for large-scale solar 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!

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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

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