Puyo, Pastaza Province, Ecuador, located at latitude -1.4836 and longitude -77.9957, presents a relatively favorable environment for solar energy generation throughout the year. This tropical location benefits from consistent sunlight, with seasons characterized more by wet and dry periods rather than traditional temperature-based seasons.
Seasonal Solar Performance
Solar panel performance in Puyo varies slightly across the meteorological seasons:
- Spring: 5.22 kWh/day
- Summer: 4.40 kWh/day
- Autumn: 4.12 kWh/day
- Winter: 4.35 kWh/day
Optimal Panel Positioning
For fixed solar panel installations in Puyo, Pastaza Province, the ideal tilt angle to maximize year-round energy production is 1 degree North. This nearly flat orientation takes advantage of the location's proximity to the equator, where the sun's path remains relatively high in the sky throughout the year.
Environmental Considerations
While Puyo's tropical climate is generally conducive to solar energy production, there are some environmental factors to consider. The region experiences high rainfall, particularly during the wet season, which could temporarily reduce solar efficiency. To mitigate this, installers should ensure proper drainage systems are in place and consider using hydrophobic coatings on panels to help water runoff.
Additionally, the humid environment may lead to accelerated degradation of solar equipment. Using corrosion-resistant materials and implementing regular maintenance schedules can help prolong the life and efficiency of solar installations in this climate.
Conclusion
Overall, Puyo, Pastaza Province, Ecuador offers a good location for year-round solar energy generation. With proper installation techniques and maintenance practices, solar PV systems in this area can provide consistent and reliable renewable energy throughout the year.
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 Puyo
Seasonal solar PV output for Latitude: -1.4836, Longitude: -77.9957 (Puyo, 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 Puyo, Ecuador
To maximize your solar PV system's energy output in Puyo, Ecuador (Lat/Long -1.4836, -77.9957) 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 Puyo, 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 Puyo, 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 |
|---|---|---|---|
| 15° South in Summer | 8° North in Autumn | 17° North in Winter | 4° 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 Puyo, 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 Puyo, 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 Puyo, Ecuador
The topography around Puyo, Ecuador, is characterized by its location in the eastern foothills of the Andes Mountains, where the rugged terrain transitions into the vast Amazon Basin. This unique geographical setting creates a diverse landscape with varying elevations and features. Puyo itself sits at an elevation of approximately 950 meters (3,117 feet) above sea level. The surrounding area is dominated by lush, tropical rainforest and numerous rivers that flow eastward towards the Amazon. The terrain is generally hilly, with steep slopes and deep valleys carved out by the region's abundant rainfall and river systems. To the west of Puyo, the land rises more dramatically as it approaches the Andes Mountains. This area features more pronounced hills and mountains, with some peaks reaching elevations of 2,000 meters (6,562 feet) or more. The eastern side of Puyo, in contrast, gradually descends into the flatter Amazon Basin, with gentler slopes and wider river valleys.
Potential for Large-scale Solar PV
When considering areas near Puyo for large-scale solar photovoltaic (PV) installations, several factors must be taken into account. The region's high rainfall and frequent cloud cover pose challenges for solar energy production. However, some areas may still be suitable for solar PV development: The eastern outskirts of Puyo, where the terrain begins to flatten out towards the Amazon Basin, could potentially offer more suitable locations for solar farms. These areas may have larger, more level plots of land that could accommodate extensive solar panel arrays. Additionally, being further from the mountains, these locations might experience slightly less cloud cover and rainfall compared to areas closer to the Andes. Higher elevation sites to the west of Puyo, on the slopes facing east or southeast, could also be considered for solar PV installations. While these areas may have more challenging terrain, they could potentially benefit from earlier morning sun exposure and possibly less fog or low-lying cloud cover. It's important to note that any large-scale solar PV project in this region would need to carefully balance energy production potential with environmental concerns, given the area's rich biodiversity and importance to the Amazon ecosystem. Detailed environmental impact studies and engagement with local communities would be essential before undertaking such projects.Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Tuesday 25th of March 2025
Last Updated: Monday 21st of July 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.
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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.




