Solar Energy Potential in Capela, Alagoas, Brazil
Capela, Alagoas, Brazil, located at latitude -9.3934 and longitude -36.1239, presents a promising location for solar energy generation throughout the year. Situated in the tropics, this location benefits from relatively consistent sunlight patterns that make it suitable for photovoltaic (PV) solar installations. The seasonal energy production shows interesting variations throughout the year. During spring, solar panels can generate their highest output at approximately 7.02 kWh per day for each kilowatt of installed capacity. Summer follows closely with 6.86 kWh/day, while autumn sees a moderate decrease to 5.67 kWh/day. Winter represents the lowest production period with 4.87 kWh/day, though this output still remains substantial compared to many other global locations.Optimal Panel Installation
For fixed solar panel installations in Capela, Alagoas, the ideal tilt angle to maximize year-round energy production is 8 degrees facing North. This specific angle has been calculated to optimize solar capture throughout the changing seasons, taking into account the location's position south of the equator. The seasonal variation indicates that spring and summer (approximately September through February in the Southern Hemisphere) represent the prime solar harvesting periods in Capela. These months would be ideal for energy-intensive activities or for storing excess energy if battery systems are installed.Environmental and Weather Considerations
Several factors could potentially impact solar production in Capela:- Rainfall patterns: Being in a tropical region, Capela experiences distinct wet and dry seasons. Heavy rainfall during the wet season can reduce solar efficiency through cloud cover and panel soiling.
- Humidity: The region's high humidity levels can cause accelerated degradation of electrical components if not properly protected.
- Dust and pollen: Agricultural activities in the region may contribute to airborne particles that can accumulate on panels.
Preventative Measures
To maximize solar energy production in Capela, Alagoas, several preventative measures should be considered:- Install panels with self-cleaning glass or hydrophobic coatings to minimize the impact of dust and rainfall residue
- Implement a regular cleaning schedule, particularly before and after the rainy season
- Use marine-grade components and proper enclosures for electrical equipment to combat humidity-related degradation
- Consider a slight increase in the tilt angle (beyond the optimal 8 degrees) if dust accumulation proves to be a significant issue
- Install monitoring systems to quickly identify and address any performance issues
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 Capela
Seasonal solar PV output for Latitude: -9.3934, Longitude: -36.1239 (Capela, 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 8° North in Capela, Brazil
To maximize your solar PV system's energy output in Capela, Brazil (Lat/Long -9.3934, -36.1239) throughout the year, you should tilt your panels at an angle of 8° 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 Capela, 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 Capela, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 8° North tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 6° South in Summer | 15° North in Autumn | 25° North in Winter | 3° 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 Capela, 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 Capela, Brazil.
Our calculation method
- Solar Position:
We determine the Sun's position on the Winter solstice using the location's latitude and solar declination. - Shadow Projection:
We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle. - 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 Capela, Brazil
The region surrounding Capela, Brazil, situated at coordinates -9.3934 latitude and -36.1239 longitude, presents a diverse topographical landscape characteristic of northeastern Brazil's interior. Capela is located in the state of Alagoas, in a transition zone between the coastal plains and the more elevated interior highlands. The terrain in this area is predominantly characterized by gently rolling hills interspersed with shallow valleys, creating an undulating landscape that gradually rises as one moves westward from the Atlantic coast. The immediate vicinity of Capela features modest elevations ranging from approximately 200 to 400 meters above sea level. These rolling hills are part of the eastern Brazilian highlands, a geomorphological feature that extends through much of Brazil's northeastern interior. The landscape has been shaped by centuries of erosion processes, resulting in rounded hilltops and gradually sloping sides rather than sharp, dramatic features.
Hydrological Features
The area's topography is influenced by several river systems, most notably tributaries of the São Francisco River basin. These waterways have carved shallow valleys through the landscape, creating natural divisions in the terrain. During the rainy season, these watercourses swell and can contribute to localized flooding in lower-lying areas, while in drier periods, they may diminish significantly or dry up entirely.Vegetation and Land Cover
The natural vegetation of the region reflects its position in a transitional zone between the Atlantic Forest biome and the drier Caatinga ecosystem. The original forest cover has been substantially modified by human activity, with much of the land converted to agricultural use, particularly sugar cane cultivation and livestock grazing. The remaining natural vegetation tends to be concentrated in areas less suitable for agriculture, such as steeper slopes and riparian zones along watercourses.Solar PV Suitability
For large-scale solar photovoltaic installations, several areas in the vicinity of Capela offer favorable conditions. The most suitable locations would be the broader, flatter hilltops and plateaus found primarily to the west and southwest of Capela. These elevated areas benefit from minimal shading effects from surrounding terrain and generally stable soil conditions that can support the necessary infrastructure. The gently sloping areas with southern, eastern, or western aspects (the direction the slope faces) would be particularly advantageous for solar PV deployment. These orientations allow for optimal solar exposure throughout the day. Areas with northern-facing slopes would be less ideal as they receive less direct sunlight in the southern hemisphere. Land that has already been cleared for agriculture but may be marginal for productive farming presents an excellent opportunity for solar development. Such areas are common in the broader region around Capela, particularly on the higher ground where soil quality may be poorer and water access more limited. It's worth noting that while the immediate vicinity of Capela offers reasonable conditions for solar PV, moving further inland and to slightly higher elevations (approximately 20-30 kilometers west) would provide even more favorable conditions, with clearer atmospheric conditions and potentially fewer issues with morning fog that can sometimes affect areas closer to the coast. The relatively stable geological conditions of the region also present an advantage, with limited risk of landslides or significant ground movement that could affect solar infrastructure. However, proper geotechnical assessment would still be necessary for any specific site selection.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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Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Sunday 29th of June 2025
Last Updated: Friday 1st of August 2025
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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.




