Lago da Pedra, Brazil presents an excellent location for year-round solar energy generation. Located in the tropics at coordinates -4.5267, -45.0581, this region benefits from consistent sunlight throughout most of the year, with seasons typically defined by wet and dry periods rather than significant temperature variations.

Solar Energy Production Potential

The solar energy output at Lago da Pedra demonstrates remarkably consistent performance across all seasons. Winter offers the highest production at 5.95 kWh per day per kW of installed solar capacity, followed closely by autumn at 5.84 kWh/day. Spring generates 5.78 kWh/day, while summer produces 5.28 kWh/day per kW installed. This seasonal pattern is typical for locations in the Southern Hemisphere tropics, where winter months often provide optimal solar conditions due to clearer skies and the sun's position. The relatively small variation between seasons - only 0.67 kWh difference between the highest and lowest producing seasons - makes this location particularly attractive for solar installations. For maximum year-round energy production, solar panels should be installed at a fixed tilt angle of 5 degrees facing north. This optimal angle accounts for the location's proximity to the equator and maximizes total annual solar output.

Environmental and Weather Factors

Several factors could potentially impact solar energy production at Lago da Pedra:

• Seasonal rainfall patterns: The tropical wet season can bring heavy cloud cover and frequent precipitation, reducing solar irradiance during certain months
• High humidity levels: Persistent moisture in the air can create atmospheric haze that diminishes solar panel efficiency
• Dust and debris accumulation: The dry season may lead to dust buildup on panel surfaces, reducing light transmission
• Tropical storms: Intense weather events can damage equipment and interrupt power generation

Preventative Measures for Optimal Performance

To maximize solar energy production despite these challenges, several installation strategies should be considered: Regular cleaning schedules become essential, particularly during dry periods when dust accumulation is most problematic. Installing automated cleaning systems or planning manual cleaning every 4-6 weeks can maintain optimal panel performance. Proper drainage systems around solar installations prevent water pooling during heavy rains and reduce humidity-related issues. Elevating panels adequately above ground level also improves air circulation and reduces moisture retention. Using high-quality, weather-resistant mounting systems and panels rated for tropical conditions ensures equipment longevity. Anti-reflective coatings on panels can help maintain efficiency even when atmospheric conditions aren't ideal. Installing monitoring systems allows for real-time performance tracking, enabling quick identification of weather-related production drops or maintenance needs. This proactive approach helps maintain consistent energy output throughout the year. Overall, Lago da Pedra offers excellent potential for solar energy generation, with proper installation techniques and maintenance practices easily addressing the manageable environmental challenges present in this tropical location.

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 Lago Da Pedra

Seasonal solar PV output for Latitude: -4.5267, Longitude: -45.0581 (Lago Da Pedra, 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 5° North in Lago Da Pedra, Brazil

To maximize your solar PV system's energy output in Lago Da Pedra, Brazil (Lat/Long -4.5267, -45.0581) throughout the year, you should tilt your panels at an angle of 5° 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 Lago Da Pedra, 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 Lago Da Pedra, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 5° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
11° South in Summer	11° North in Autumn	20° North in Winter	1° South 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 Lago Da Pedra, 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 Lago Da Pedra, 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 Lago Da Pedra, Brazil

Topographical Features Around Lago da Pedra

Lago da Pedra sits within the gently undulating landscape of central Maranhão state in northeastern Brazil. The region forms part of the expansive Brazilian plateau, characterized by relatively flat to moderately rolling terrain with elevations typically ranging between 100 to 300 meters above sea level. The topography here consists primarily of broad, open plains interspersed with low hills and shallow valleys that create a landscape well-suited to large-scale development projects.

The area surrounding Lago da Pedra features predominantly savanna-like terrain known locally as cerrado, with scattered patches of gallery forest along waterways and depressions. The land slopes gently toward the northeast, following the natural drainage patterns that feed into the Tocantins River basin system. Rocky outcrops and small escarpments occasionally break the otherwise smooth terrain, though these features are generally isolated and do not dominate the landscape.

The soil composition consists mainly of lateritic soils typical of the Brazilian central plateau, which tend to be well-drained and relatively stable. These soils have formed over ancient crystalline bedrock, creating a solid foundation that can support substantial infrastructure development. The region experiences distinct wet and dry seasons, with the topography facilitating good natural drainage during the rainy period.

Optimal Areas for Large-Scale Solar Development

The most promising locations for extensive solar photovoltaic installations lie on the elevated plateau areas to the south and southwest of Lago da Pedra. These zones offer several key advantages including minimal slope variations, excellent natural drainage, and reduced risk of flooding during seasonal rains. The higher elevation sites also benefit from increased wind circulation, which helps maintain optimal operating temperatures for solar panels.

The broad plains extending eastward from the town center present another excellent opportunity for solar development. This area features consistently flat terrain with minimal vegetation coverage, reducing both construction costs and environmental impact concerns. The stable geological foundation in this zone can easily accommodate the mounting systems required for large solar arrays without extensive ground preparation.

Areas along the gentle ridgelines that run roughly north-south through the region offer particularly favorable conditions due to their elevated position and natural clearing of vegetation. These locations provide optimal exposure to solar radiation throughout the day while maintaining good access to existing transportation infrastructure. The gradual slopes in these areas, typically less than 5 degrees, are ideal for solar panel installation and maintenance access.

The western approaches to Lago da Pedra also show strong potential, where the terrain opens into expansive flat areas with minimal tree coverage. These zones benefit from excellent visibility across the landscape, stable weather patterns, and proximity to existing utility infrastructure. The well-drained nature of the terrain in this direction reduces concerns about equipment exposure to standing water during the wet season.

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.