São Domingos, Brazil represents an excellent location for year-round solar energy generation. Located in the tropics at coordinates -13.534, -46.5103, this area benefits from consistent sunlight throughout most of the year, with seasons characterized more by wet and dry periods rather than significant temperature variations.

Solar Energy Production Potential

The solar energy output data for São Domingos demonstrates remarkably consistent performance across all seasons. During summer, solar panels can be expected to generate 5.73 kWh per day for each kW of installed capacity. This increases to 6.16 kWh/day in autumn, 6.11 kWh/day in winter, and peaks at 6.23 kWh/day in spring. The relatively small variation between seasons - ranging from 5.73 to 6.23 kWh/day - makes this location particularly attractive for solar installations. Spring emerges as the optimal season for solar generation, closely followed by autumn and winter, while summer shows slightly lower but still strong production levels.

Optimal Panel Configuration

For fixed panel installations at São Domingos, the ideal tilt angle to maximize total year-round solar production is 14 degrees North. This angle is calculated by analyzing daily solar elevation angles at this latitude, determining optimal panel positioning, and weighting these angles according to solar irradiance data while accounting for Earth's elliptical orbit.

Environmental and Weather Challenges

Several local factors could potentially impact solar energy production in São Domingos, though the location's tropical climate presents both opportunities and challenges. Seasonal Rainfall Patterns: As a tropical location, São Domingos experiences distinct wet and dry seasons. During the wet season, increased cloud cover and frequent rainfall can temporarily reduce solar irradiance and energy output. Heavy rains may also create issues with water accumulation on panels if proper drainage is not implemented. High Humidity and Temperature: The tropical climate brings consistently high humidity and temperatures, which can affect solar panel efficiency. Most solar panels experience reduced efficiency as temperatures rise above optimal operating conditions, typically around 25°C (77°F). Dust and Debris Accumulation: During dry periods, dust and particulate matter can accumulate on solar panels, creating a film that reduces light transmission and decreases energy production.

Preventative Measures for Optimal Performance

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

• Enhanced Drainage Systems: Install panels with adequate spacing and proper mounting systems that allow rainwater to flow off quickly, preventing water pooling and potential electrical issues
• Improved Ventilation: Design installations with sufficient airflow beneath panels to help dissipate heat and maintain lower operating temperatures
• Self-Cleaning Panel Surfaces: Consider panels with hydrophobic coatings or textured surfaces that help rain wash away dust and debris naturally
• Regular Maintenance Scheduling: Implement routine cleaning schedules, particularly during dry seasons when dust accumulation is highest
• Quality Component Selection: Choose panels and inverters specifically rated for high-temperature, high-humidity tropical environments

Overall Assessment

Despite these potential challenges, São Domingos remains an highly favorable location for solar energy generation. The consistent year-round production levels, with minimal seasonal variation, make it an ideal candidate for both residential and commercial solar installations. The environmental factors, while requiring consideration during installation and maintenance planning, are manageable with proper system design and regular upkeep. The location's tropical position ensures reliable solar resource availability throughout the year, making it a strong investment opportunity for solar energy projects when appropriate preventative measures are implemented.

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 São Domingos, Goiás

Seasonal solar PV output for Latitude: -13.534, Longitude: -46.5103 (São Domingos, Goiás, 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 14° North in São Domingos, Goiás, Brazil

To maximize your solar PV system's energy output in São Domingos, Goiás, Brazil (Lat/Long -13.534, -46.5103) throughout the year, you should tilt your panels at an angle of 14° 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 São Domingos, Goiás, 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 São Domingos, Goiás, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 14° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
2° South in Summer	20° North in Autumn	29° North in Winter	8° 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 São Domingos, Goiás, 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 São Domingos, Goiás, 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 São Domingos, Goiás, Brazil

Topography Around São Domingos

São Domingos sits in the heart of Brazil's Goiás state, positioned within the expansive Brazilian Highlands plateau region known as the Planalto Central. The terrain around this municipality is characterized by gently rolling hills and broad, undulating plains that stretch across the cerrado landscape. The elevation in the immediate area ranges from approximately 800 to 1,200 meters above sea level, creating a moderately elevated but relatively stable topographical foundation. The landscape features characteristic cerrado topography with wide, open valleys separated by low ridges and mesa-like formations. These geological features create natural drainage patterns that flow toward the Tocantins River basin to the north and the São Francisco River basin to the east. The terrain is generally well-drained with good soil stability, making it suitable for various land uses including agriculture and infrastructure development. Rock formations in the region consist primarily of ancient crystalline basement rocks overlain by sedimentary deposits, creating a stable geological foundation. The area experiences minimal seismic activity and has low risk of landslides or major geological instabilities, which contributes to its suitability for long-term infrastructure projects.

Optimal Areas for Large-Scale Solar Development

The broad, gently sloping plains extending to the north and northwest of São Domingos present the most favorable conditions for large-scale solar photovoltaic installations. These areas offer extensive flat to slightly undulating terrain with minimal natural obstacles and excellent accessibility via existing road networks. The relatively uniform topography reduces construction complexity and allows for efficient panel arrangement across large areas. The elevated plateaus southwest of the municipality also provide excellent opportunities for solar development. These areas benefit from consistent elevation levels and natural drainage patterns that help prevent water accumulation during the rainy season. The stable geological conditions and minimal vegetation density in many sections make site preparation more straightforward and cost-effective. Areas along the broader valley floors, particularly those extending toward the northeast, offer additional potential for solar installations. These locations provide natural wind circulation patterns that can help with panel cooling, while the gentle slopes facilitate proper drainage and reduce maintenance requirements. The existing agricultural infrastructure in many of these areas also means that access roads and electrical transmission connections may already be partially established. The terrain immediately surrounding São Domingos benefits from its position within the cerrado biome, where natural vegetation is typically less dense than forested regions, reducing land clearing requirements. The combination of stable soils, moderate elevation, and favorable drainage characteristics makes this region particularly well-suited for the infrastructure requirements of utility-scale solar installations.

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.