Cachoeira, Bahia, Brazil represents a highly favorable location for year-round solar photovoltaic energy generation. Located in the tropics at coordinates -12.6762, -38.8555, 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 found in temperate climates.

Solar Energy Production Potential

The solar energy output data for Cachoeira demonstrates strong year-round performance, with summer delivering the highest production at 6.19 kWh per day per kW of installed capacity. Spring follows closely with 5.98 kWh/day, while autumn provides 5.59 kWh/day. Even during the lowest-producing season of winter, the location still generates a respectable 4.53 kWh/day per kW installed. For optimal performance, solar panels should be installed at a fixed tilt angle of 11 degrees facing north. This angle has been calculated to maximize total year-round production by accounting for daily solar elevation angles, optimal panel positioning, and weighting these factors against actual solar irradiance data throughout the year.

Environmental and Weather Challenges

Several local factors could potentially impact solar energy production in Cachoeira, Bahia, though the location remains highly suitable overall. The tropical climate brings distinct wet and dry seasons, with the rainy period potentially reducing solar output due to increased cloud cover and atmospheric moisture. Heavy rainfall during wet months can create temporary shading and reduce the intensity of solar radiation reaching the panels. High humidity levels, common in tropical Brazilian regions, can lead to moisture-related issues including corrosion of electrical components and reduced efficiency due to condensation on panel surfaces. The combination of heat and humidity may also accelerate the degradation of certain solar panel materials over time.

Preventative Measures for Optimal Performance

Several installation strategies can help mitigate these tropical challenges:

• Install panels with enhanced ventilation systems underneath to promote air circulation and reduce heat buildup
• Use marine-grade or tropical-rated electrical components and wiring designed to withstand high humidity and salt air
• Apply anti-corrosion treatments to all metal mounting hardware and regularly inspect for signs of rust or degradation
• Ensure proper drainage around the installation site to prevent water accumulation during heavy rains
• Schedule regular cleaning and maintenance, particularly after the wet season, to remove any accumulated debris or organic growth

The consistent tropical sunlight and relatively minor seasonal variation make Cachoeira an excellent candidate for solar energy investment, with proper installation techniques easily addressing the manageable environmental challenges present in this 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 Cachoeira

Seasonal solar PV output for Latitude: -12.6762, Longitude: -38.8555 (Cachoeira, 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 11° North in Cachoeira, Brazil

To maximize your solar PV system's energy output in Cachoeira, Brazil (Lat/Long -12.6762, -38.8555) throughout the year, you should tilt your panels at an angle of 11° 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 Cachoeira, 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 Cachoeira, Brazil. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 11° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
3° South in Summer	18° North in Autumn	28° North in Winter	7° 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 Cachoeira, 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 Cachoeira, 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 Cachoeira, Brazil

Topographical Features Around Cachoeira

Cachoeira sits in the heart of Brazil's Bahia state, positioned within the Recôncavo Baiano region approximately 110 kilometers inland from Salvador. The landscape surrounding this historic colonial town is characterized by gently rolling hills and undulating terrain that forms part of the broader Bahian coastal lowlands. The elevation around Cachoeira typically ranges from 20 to 150 meters above sea level, creating a terrain that is neither completely flat nor mountainously steep.

The Paraguaçu River flows directly through Cachoeira, creating a natural valley system that has shaped much of the local topography over millennia. This river valley produces fertile alluvial plains along its banks, while the surrounding areas feature modest hills and ridges composed primarily of sedimentary rock formations. The terrain gradually rises as one moves away from the river, creating a series of low plateaus and gentle slopes that extend in all directions from the urban center.

The regional climate contributes to a landscape dominated by caatinga vegetation in the drier interior areas, transitioning to Atlantic Forest remnants in the more humid zones closer to the coast. This vegetation pattern reflects the underlying topographical variations, with denser forest cover typically found in the valleys and more sparse, drought-resistant plants occupying the elevated areas.

Optimal Areas for Large-Scale Solar Development

The elevated plateaus and gentle hillsides located 10 to 30 kilometers northeast and southwest of Cachoeira present the most promising locations for large-scale solar photovoltaic installations. These areas benefit from consistent elevation between 80 and 120 meters above sea level, providing excellent drainage while maintaining relatively flat to gently sloping terrain that minimizes grading requirements during construction.

The northeastern quadrant, in particular, offers extensive areas of cleared or lightly vegetated land with minimal agricultural use, making land acquisition potentially more straightforward. The terrain in this direction features broad, open spaces with gentle south-facing slopes that would be ideal for solar panel orientation. The substrate in these areas consists primarily of stable sedimentary formations that can adequately support the infrastructure requirements of large solar installations.

Areas to the southwest also show considerable promise, particularly the elevated plains that extend toward the municipality of São Félix. These locations benefit from good road access via existing highway connections, which would facilitate both construction logistics and ongoing maintenance operations. The topography here is characterized by wide, relatively flat expanses interrupted by only minor drainage channels, creating large contiguous areas suitable for extensive solar arrays.

The immediate river valley areas, while topographically suitable in terms of slope, would be less appropriate for major solar development due to their agricultural importance and periodic flooding potential. Similarly, the steeper hillsides found in the eastern approaches toward the coast would present challenging terrain for large-scale installations, though they might be suitable for smaller, distributed solar projects that can accommodate more varied topographical conditions.

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.