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Flag of EcuadorSolar PV Analysis of Rosa Zarate, Ecuador

Graph of hourly avg kWh electricity output per kW of Solar PV installed in Rosa Zarate, Ecuador (by season)

Rosa Zarate, Esmeraldas, Ecuador presents an excellent location for year-round solar PV energy generation, benefiting from its tropical positioning where consistent sunlight is available throughout most of the year with seasons typically defined by wet and dry periods rather than temperature variations.

Solar Energy Production Potential

The solar energy output at this location shows strong and consistent performance across all seasons. Winter delivers the lowest production at 3.61 kWh per day per kW of installed solar capacity, while spring offers the highest output at 4.42 kWh per day per kW. Summer and autumn fall in between with 3.84 kWh and 3.97 kWh respectively per kW of installed capacity. Spring emerges as the optimal season for solar generation, producing approximately 22% more energy than the weakest season. This relatively modest seasonal variation demonstrates the location's reliability for consistent solar power production throughout the year. For fixed panel installations at Rosa Zarate, Esmeraldas, the ideal tilt angle to maximize total year-round solar production is 0 degrees (completely flat). This optimal angle is calculated by analyzing daily solar elevation angles at the latitude, determining daily optimal panel positioning, and weighting these angles using solar irradiance data while accounting for Earth's elliptical orbit.

Environmental and Weather Challenges

Several significant local factors could impact solar production efficiency at this tropical location and require careful consideration during installation planning. Humidity and Moisture represent primary concerns in this tropical climate. High humidity levels can reduce solar panel efficiency and create condensation issues that may damage electrical components over time. The wet season brings additional moisture-related challenges that can affect both performance and equipment longevity. Heavy Rainfall and Cloud Cover during wet seasons can substantially reduce solar irradiance reaching the panels. Intense tropical storms may also pose risks to panel integrity and mounting systems. Dust and Debris Accumulation can significantly reduce panel efficiency, particularly during dry periods when airborne particles settle on panel surfaces without regular rainfall to provide natural cleaning.

Preventative Installation Measures

To optimize solar energy production despite these environmental challenges, several preventative measures should be implemented:
  • Enhanced Weatherproofing: Use marine-grade electrical components and ensure all connections are properly sealed against moisture intrusion
  • Robust Mounting Systems: Install reinforced mounting structures designed to withstand high winds and heavy rainfall typical of tropical storms
  • Improved Drainage: Design installations with proper drainage to prevent water accumulation around electrical components
  • Regular Maintenance Scheduling: Establish frequent cleaning protocols to remove dust, debris, and organic matter that can accumulate on panel surfaces
Additional considerations include selecting solar panels with anti-reflective coatings that perform better in high-humidity conditions and installing adequate ventilation around panels to promote air circulation and reduce moisture buildup. Proper grounding systems become especially critical in areas prone to electrical storms common in tropical regions.

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 108 locations across Ecuador. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Ecuador by location

Solar output per kW of installed solar PV by season in Rosa Zarate

Seasonal solar PV output for Latitude: 0.3358, Longitude: -79.4679 (Rosa Zarate, Ecuador), 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:

Summer
Average 3.84kWh/day in Summer.
Autumn
Average 3.61kWh/day in Autumn.
Winter
Average 3.97kWh/day in Winter.
Spring
Average 4.42kWh/day in Spring.

 

Ideally tilt fixed solar panels 0° in Rosa Zarate, Ecuador

To maximize your solar PV system's energy output in Rosa Zarate, Ecuador (Lat/Long 0.3358, -79.4679) throughout the year, you should tilt your panels at an angle of 0° 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.

The sun
At Latitude: 0.3358, Longitude: -79.4679, the ideal angle to tilt panels is 0°

Seasonally adjusted solar panel tilt angles for Rosa Zarate, Ecuador

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 Rosa Zarate, Ecuador. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 0° tilt angle throughout the year.

Overall Best Summer Angle Overall Best Autumn Angle Overall Best Winter Angle Overall Best Spring Angle
16° North in Summer 6° South in Autumn 15° South in Winter 6° North in Spring

Assuming you can modify the tilt angle of your solar PV panels throughout the year, you can optimize your solar generation in Rosa Zarate, Ecuador as follows: In Summer, set the angle of your panels to 16° facing North. In Autumn, tilt panels to 6° facing South for maximum generation. During Winter, adjust your solar panels to a 15° angle towards the South for optimal energy production. Lastly, in Spring, position your panels at a 6° angle facing North to capture the most solar energy in Rosa Zarate, Ecuador.

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 Rosa Zarate, Ecuador

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 Rosa Zarate, Ecuador.

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.






Please enter information above to calculate panel spacing.

Topography for solar PV around Rosa Zarate, Ecuador

Topographical Features Around Rosa Zarate

Rosa Zarate sits in the western coastal region of Ecuador, positioned in an area characterized by relatively gentle topography that transitions from the Pacific coastal plains toward the foothills of the Andes Mountains. The immediate terrain around this location features predominantly flat to gently rolling hills with elevations that gradually increase as one moves eastward from the coast. The landscape is typical of Ecuador's coastal lowlands, with a mix of agricultural lands, scattered vegetation, and occasional small waterways that drain toward the Pacific Ocean. The region experiences a subtropical climate influenced by its proximity to the equator and the Pacific Ocean. The terrain consists mainly of sedimentary soils that have been shaped by centuries of river deposits and coastal processes. Small ridges and valleys create a moderately undulating landscape, though significant elevation changes are minimal compared to the dramatic topography found further inland toward the Andean spine.

Optimal Areas for Large-Scale Solar Development

The flat to gently sloping agricultural areas immediately surrounding Rosa Zarate present the most promising opportunities for large-scale solar photovoltaic installations. These locations offer several advantages including minimal grading requirements, reduced construction costs, and easier access for maintenance operations. The relatively stable soil conditions in the coastal plain provide good foundation support for mounting systems without requiring extensive ground preparation. Areas with south-facing slopes would be particularly well-suited for solar installations, as they can maximize exposure to direct sunlight throughout the day. The gentle inclines found in the rolling hills east of the immediate coastal plain offer natural drainage benefits while maintaining accessibility for construction equipment and ongoing maintenance activities. Agricultural lands that are currently underutilized or have lower productivity could serve as excellent candidates for solar development. These areas typically have existing road access and electrical infrastructure nearby, reducing the overall project development costs. The relatively open landscape with minimal tree cover eliminates concerns about shading that might affect solar panel performance.

Infrastructure and Accessibility Considerations

The coastal plain geography around Rosa Zarate provides favorable conditions for grid connection infrastructure. The flat terrain facilitates the installation of transmission lines and substations needed to connect large solar facilities to Ecuador's electrical grid. Existing agricultural roads and pathways can often be upgraded to accommodate the heavy equipment required during construction phases. The stable geological conditions typical of this coastal region minimize concerns about ground movement or settlement that could affect solar panel mounting systems over their operational lifetime. The absence of steep slopes or unstable terrain reduces the risk of erosion or landslide issues that might compromise long-term facility operations.

Citation Guide

Article Details for Citation

Article: Solar PV Analysis of Rosa Zarate, Ecuador
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Tuesday 22nd of July 2025
Last Updated: Thursday 7th of August 2025

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Compare this location to others worldwide for solar PV potential

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