Pueblo Viejo, Los Ríos, Ecuador presents an excellent location for year-round solar energy generation, benefiting from its tropical position near the equator where sunlight remains remarkably consistent throughout the year.
Solar Energy Production Potential
The solar production data for Pueblo Viejo demonstrates strong and reliable energy generation across all seasons. Spring delivers the highest output at 4.39 kWh per day per kW of installed solar capacity, closely followed by autumn at 4.37 kWh per day. Summer provides solid production at 4.03 kWh per day, while winter shows the lowest but still respectable output at 3.78 kWh per day. The relatively small variation between seasons - only about 16% difference between the highest and lowest producing periods - makes this location particularly attractive for solar installations. This consistency means energy production remains predictable year-round, unlike locations with more dramatic seasonal variations.Optimal Installation Configuration
For fixed panel installations at Pueblo Viejo, Los Ríos, the ideal tilt angle to maximize total year-round solar production is just 1 degree facing North. This nearly flat configuration reflects the location's proximity to the equator, where the sun passes almost directly overhead throughout the year.Environmental and Weather Considerations
Several local factors could potentially impact solar production at this tropical location:- Heavy rainfall during wet seasons - Can reduce solar irradiance and create cloud cover
- High humidity levels - May cause moisture-related equipment issues
- Dust and debris accumulation - Tropical environments often have airborne particles that can coat panels
- Intense UV exposure - Equatorial sun can accelerate equipment degradation
Preventative Measures for Optimal Performance
To ensure maximum energy production despite these challenges, several installation strategies prove effective:- Regular cleaning schedules - Implement frequent panel washing to remove dust, pollen, and debris
- Proper drainage design - Ensure water runs off panels quickly during heavy rains
- Quality mounting systems - Use corrosion-resistant materials designed for tropical climates
- Enhanced ventilation - Allow adequate airflow behind panels to prevent overheating and moisture buildup
- UV-resistant components - Select equipment rated for high UV exposure environments
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 Pueblo Viejo
Seasonal solar PV output for Latitude: -1.5539, Longitude: -79.5375 (Pueblo Viejo, 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:
 
Ideally tilt fixed solar panels 1° North in Pueblo Viejo, Ecuador
To maximize your solar PV system's energy output in Pueblo Viejo, Ecuador (Lat/Long -1.5539, -79.5375) throughout the year, you should tilt your panels at an angle of 1° 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 Pueblo Viejo, 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 Pueblo Viejo, Ecuador. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 1° North tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 14° South in Summer | 7° North in Autumn | 17° North in Winter | 5° 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 Pueblo Viejo, 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 Pueblo Viejo, Ecuador.
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 Pueblo Viejo, Ecuador
Topographical Features of Pueblo Viejo
Pueblo Viejo is situated in the coastal lowlands of western Ecuador, positioned within the Guayas Province at an elevation of approximately 20 meters above sea level. The surrounding landscape is characterized by relatively flat to gently undulating terrain that forms part of the broader coastal plain extending from the Pacific Ocean eastward toward the foothills of the Andes Mountains.
The region displays typical characteristics of Ecuador's coastal zone, with expansive areas of agricultural land interspersed with scattered settlements and transportation corridors. The topography gradually rises as one moves inland from the coast, creating a series of low hills and gentle slopes that rarely exceed 100 meters in elevation within a 20-kilometer radius of Pueblo Viejo.
Drainage patterns in the area are influenced by several seasonal watercourses and irrigation channels that support the region's agricultural activities. These waterways create subtle variations in the landscape, forming shallow valleys and slightly elevated ridges that add gentle contours to what is otherwise a predominantly flat terrain.
Optimal Areas for Large-Scale Solar Development
The expansive flat agricultural lands surrounding Pueblo Viejo present excellent opportunities for large-scale solar photovoltaic installations. Areas located 5 to 15 kilometers northeast and southeast of the town center offer particularly favorable conditions, where extensive stretches of level ground provide unobstructed southern exposure essential for optimal solar panel positioning.
The gently sloping terrain found approximately 10 to 20 kilometers inland from Pueblo Viejo represents another prime location for solar development. These areas benefit from slightly elevated positions that enhance drainage while maintaining the gradual gradients necessary for efficient panel installation and maintenance access. The natural slope orientation in many of these locations provides advantageous angles for solar collection throughout the day.
Agricultural zones with minimal tree coverage, particularly those currently used for seasonal crops or grazing, would be well-suited for solar farm development. These areas typically feature cleared land with established access roads, reducing initial site preparation costs and environmental impact. The proximity to existing electrical infrastructure along major transportation routes adds further appeal to these locations.
Elevated ridgelines and hilltops within a 25-kilometer radius of Pueblo Viejo, while requiring more complex installation procedures, offer excellent potential for solar installations due to their unobstructed exposure and minimal shading concerns. These locations benefit from consistent air circulation that helps maintain optimal panel operating temperatures while providing commanding views of the surrounding landscape that facilitate monitoring and maintenance activities.
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Thursday 31st of July 2025
Last Updated: Friday 8th 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.




