Solar Energy Generation in Registro, São Paulo, Brazil

Registro, São Paulo, Brazil, situated in the Southern Sub Tropics at latitude -24.5276 and longitude -47.8638, offers reasonably good conditions for solar PV energy generation throughout the year, though with noticeable seasonal variations. The location experiences its peak solar energy production during summer, with panels generating an average of 5.85kWh per day for each kW of installed capacity. This drops moderately during autumn to 4.50kWh/day and spring to 4.43kWh/day, with the lowest production occurring during winter months at 3.40kWh/day.

Seasonal Performance

The significant difference between summer and winter production (approximately 42% reduction in winter compared to summer) indicates that while Registro is suitable for solar energy, it does experience substantial seasonal fluctuations. The location still maintains reasonable production year-round, with even the lowest winter output being viable for solar energy generation. For fixed panel installations in Registro, São Paulo, the ideal angle to maximize year-round solar production is 22 degrees facing North. This specific tilt optimizes annual energy harvest by balancing seasonal variations in the sun's position throughout the year.

Environmental and Weather Considerations

Several factors may impact solar production in Registro:

• High humidity levels in this subtropical region can reduce solar panel efficiency through increased reflection and refraction of sunlight.
• The area experiences a rainy season that can temporarily decrease production due to cloud cover and direct precipitation on panels.
• Potential dust and pollen accumulation from the surrounding vegetation can gradually reduce panel efficiency if not addressed.

Preventative Measures

To maximize solar energy production in Registro, São Paulo, consider these preventative measures: Installing panels with self-cleaning hydrophobic coatings can help shed water and reduce dust buildup. Regular maintenance scheduling, particularly before and after rainy seasons, will ensure optimal performance. Additionally, using microinverters or power optimizers can help mitigate partial shading issues that might occur from nearby vegetation or seasonal cloud patterns. The relatively consistent production across autumn and spring suggests that Registro offers a balanced solar generation profile that, while not ideal year-round, provides reliable energy production with proper system design and maintenance.

Note: The Southern Sub Tropics extend from -23.5° latitude South down to -35° latitude.

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 Registro

Seasonal solar PV output for Latitude: -24.5276, Longitude: -47.8638 (Registro, 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 22° North in Registro, Brazil

To maximize your solar PV system's energy output in Registro, Brazil (Lat/Long -24.5276, -47.8638) throughout the year, you should tilt your panels at an angle of 22° 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 Registro, 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 Registro, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 22° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
9° North in Summer	30° North in Autumn	40° North in Winter	17° 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 Registro, 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 Registro, 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 Registro, Brazil

The region surrounding Registro, Brazil is characterized by a diverse topography that significantly influences its suitability for solar photovoltaic (PV) development. Located in the southern portion of São Paulo state, Registro sits within the Vale do Ribeira (Ribeira Valley), a region defined by the Ribeira de Iguape River that flows through a landscape of varying elevations. The immediate area around Registro features a mix of lowland plains and gentle hills, with the urban center itself situated at approximately 25 meters above sea level. Moving outward from the city center, the terrain gradually transitions to more pronounced hills and eventually to the more mountainous terrain of the Serra do Mar coastal mountain range to the north and northeast.

Topographical Features

The Vale do Ribeira where Registro is located forms a relatively flat alluvial plain along the river's course. This valley is surrounded by increasingly elevated terrain, creating a basin-like formation. The Serra do Mar mountains, part of the larger Atlantic Forest biome, rise dramatically to the north, forming a natural barrier between the coastal regions and the interior plateau. To the south and southeast of Registro, the terrain becomes progressively flatter as it approaches the Atlantic Ocean coastline, approximately 60-70 kilometers away. This coastal plain features a mixture of wetlands, mangroves, and sandy beaches. The western areas beyond Registro maintain a hilly character but generally at lower elevations than the Serra do Mar range. These rolling hills gradually blend into the higher plateau regions of São Paulo state's interior.

Solar PV Suitability

For large-scale solar PV development, several areas near Registro show particular promise based on topographical considerations: The gently sloping hillsides to the west and southwest of Registro offer favorable conditions for solar installations. These areas provide sufficient elevation to avoid flooding concerns while maintaining relatively gentle grades that simplify construction and minimize earthwork requirements. The modest elevation also reduces the potential for shadowing effects from surrounding terrain. The more level areas of the river valley, particularly on slightly elevated terraces away from flood-prone zones, present opportunities for extensive solar arrays. These locations combine relatively flat terrain with good drainage characteristics, reducing development costs while maximizing the potential installation area. Areas where the coastal plain begins to the south of Registro, but before reaching the wetland ecosystems closer to the coast, offer expansive, flat terrain ideal for large solar installations. These locations benefit from minimal shadowing and simplified construction requirements. Less suitable areas include the steeper slopes of the Serra do Mar mountains, where challenging terrain would significantly increase construction costs and potentially create shadowing issues. Additionally, the lowest portions of the river valley should be avoided due to periodic flooding risks and higher humidity levels that could impact equipment longevity. The region experiences a humid subtropical climate with significant rainfall throughout the year, so any solar development would need appropriate drainage systems regardless of the specific location chosen. The most promising sites would combine favorable topography with good road access to facilitate construction and maintenance of the installation.

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.