Umari, Ceará, Brazil presents an excellent location for year-round solar energy generation. Located in the tropics at coordinates -6.6092, -38.7195, this region benefits from consistent sunlight throughout most of the year, with seasons characterized more by wet and dry periods rather than the dramatic temperature variations seen in temperate climates.

Solar Energy Production Potential

The solar energy output data for Umari demonstrates remarkably consistent performance across all seasons. During summer, solar panels can be expected to generate 6.25 kWh per day for each kW of installed capacity. Autumn shows a slight improvement at 6.37 kWh/day per kW, while winter maintains strong production at 6.32 kWh/day per kW. Spring emerges as the optimal season for solar generation, producing an impressive 7.45 kWh/day per kW of installed solar capacity. This makes spring the ideal time of year for maximum solar energy production at this location, though the relatively small variation between seasons means the location provides reliable solar energy generation year-round.

Optimal Panel Installation

For fixed panel installations at Umari, Ceará, the ideal tilt angle to maximize total year-round solar production is 6 degrees North. This angle has been calculated by analyzing daily solar elevation angles at this latitude, determining optimal panel tilt for each day, and weighting these angles by daily solar potential using solar irradiance data while accounting for Earth's elliptical orbit.

Environmental and Weather Challenges

Several local factors could potentially impede solar production at this tropical location, though most can be effectively managed with proper planning and installation techniques. The primary concern in this tropical climate is the wet season, which brings increased cloud cover and frequent rainfall. While rain can actually help clean solar panels naturally, extended periods of heavy cloud cover will reduce solar irradiance and energy output during these periods. High humidity levels typical of tropical regions can lead to moisture-related issues, including potential corrosion of electrical components and connections if not properly protected. The combination of heat and humidity can also stress solar panel materials over time. Dust and debris accumulation may be significant during dry periods, particularly if the area experiences seasonal dust storms or has nearby agricultural activities that generate airborne particles.

Preventative Measures for Optimal Performance

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

• Install panels with adequate ventilation underneath to prevent overheating and allow air circulation in the humid climate
• Use marine-grade or tropical-rated electrical components and connections designed to withstand high humidity and temperature fluctuations
• Implement proper drainage systems to prevent water accumulation around panel mounting systems
• Design mounting structures with corrosion-resistant materials such as anodized aluminum or galvanized steel with appropriate protective coatings

Regular maintenance becomes particularly important in this environment. Scheduling panel cleaning during dry periods will help maintain optimal light transmission, while periodic inspection of electrical connections and mounting hardware will help identify any humidity or corrosion-related issues before they impact performance. Despite these considerations, Umari's consistent tropical sunlight and relatively stable seasonal solar output make it a highly favorable location for solar energy generation, with proper installation and maintenance practices ensuring reliable long-term performance.

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 Umari

Seasonal solar PV output for Latitude: -6.6092, Longitude: -38.7195 (Umari, 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 6° North in Umari, Brazil

To maximize your solar PV system's energy output in Umari, Brazil (Lat/Long -6.6092, -38.7195) throughout the year, you should tilt your panels at an angle of 6° 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 Umari, 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 Umari, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 6° 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	22° North in Winter	1° 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 Umari, 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 Umari, 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 Umari, Brazil

Topographical Features of the Umari Region

The area surrounding Umari in Brazil's Ceará state is characterized by relatively flat to gently rolling terrain typical of the Caatinga region in northeastern Brazil. This semi-arid landscape sits at a modest elevation, with the immediate vicinity featuring low hills and shallow valleys that create a undulating but generally accessible topography. The terrain consists primarily of crystalline basement rock formations covered by thin soils, with occasional outcrops of granite and gneiss visible across the landscape. The region experiences a semi-arid climate with distinct wet and dry seasons, which has shaped the local topography over millennia. Seasonal streams and dry creek beds, known locally as riachos, cut through the landscape creating shallow drainage channels that remain dry for much of the year. These natural features create a network of gentle depressions and elevated areas that provide natural variation in the otherwise relatively uniform terrain. Vegetation in the area is dominated by Caatinga scrubland, consisting of drought-resistant shrubs, cacti, and small trees that remain sparse enough to allow clear views across the landscape. This sparse vegetation coverage means that large areas of relatively bare or lightly vegetated ground are common, particularly during the dry season when many plants shed their leaves as a water conservation strategy.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations around Umari would be the elevated plateaus and gentle ridges that dot the landscape. These areas offer several advantages including natural drainage away from the installation sites, reduced risk of flooding during the rainy season, and typically feature the most stable ground conditions for mounting systems. The higher elevations also tend to have more consistent wind patterns that can help with natural cooling of solar panels. The flatter areas between the low hills present excellent opportunities for grid-scale solar farms due to their accessibility and the ease of construction on level ground. These areas typically have fewer rock outcrops and more uniform soil conditions, making them ideal for large arrays that require consistent mounting and spacing. The gentle slopes in these areas provide natural drainage while remaining shallow enough to not significantly impact panel positioning or create shading issues. Areas with southern exposure on the gentle north-facing slopes would be particularly well-suited for solar installations, as they can take advantage of optimal sun angles throughout the day. The sparse vegetation in these locations means minimal land clearing would be required, reducing both environmental impact and development costs. Infrastructure considerations also favor certain areas around Umari for solar development. Locations with proximity to existing roads and electrical transmission lines would be most practical for large-scale installations. The relatively flat terrain throughout much of the region means that new access roads could be constructed with minimal grading and earthwork, keeping development costs reasonable while maintaining access for maintenance and 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.