Solar Energy Potential in Daule, Guayas, Ecuador
Daule, Guayas, Ecuador, located at latitude -1.8554 and longitude -79.9849, offers promising conditions for solar photovoltaic (PV) energy generation throughout the year. Situated in the tropics, this location benefits from relatively consistent sunlight patterns across seasons, with variations primarily driven by wet and dry periods rather than significant changes in daylight duration. The solar energy production potential in Daule demonstrates remarkable consistency across the meteorological seasons. Spring yields the highest energy output at 4.40 kWh per day for each kilowatt of installed solar capacity, followed closely by autumn with 4.37 kWh/day. Summer provides 4.01 kWh/day, while winter shows the lowest but still substantial production at 3.80 kWh/day per installed kilowatt.Optimal Panel Installation
For fixed solar panel installations in Daule, Guayas, the ideal tilt angle to maximize year-round energy production is 2 degrees North. This slight tilt helps optimize energy capture throughout the year, accounting for the location's proximity to the equator and the sun's position in the sky throughout the seasons. The minimal variation between seasonal production values (less than 0.6 kWh difference between the highest and lowest seasons) indicates that Daule offers reliable solar potential throughout the year, making it an excellent candidate for solar PV installations seeking consistent energy generation.Environmental and Weather Considerations
Despite the favorable conditions, several environmental factors could potentially impact solar production in Daule:- Seasonal rainfall patterns during the wet season (typically December through May) may reduce solar efficiency due to cloud cover and precipitation.
- High humidity levels in this tropical location can create condensation on panels, potentially reducing efficiency if not properly managed.
- Dust accumulation during dry periods can diminish panel performance if regular cleaning is not maintained.
Preventative Measures
To maximize solar energy production in Daule, Guayas, several preventative measures should be considered during installation and maintenance: Installing panels with self-cleaning capabilities or implementing regular cleaning schedules can mitigate dust accumulation issues, particularly important during dry seasons. Using quality inverters with high humidity tolerance will help maintain system efficiency in the tropical climate. Additionally, incorporating slight adjustments to the recommended 2-degree tilt can improve water runoff during rainy periods, preventing water pooling that might otherwise lead to dirt accumulation or algae growth. Implementing weather monitoring systems can also help optimize energy management by predicting periods of reduced solar production during the rainier months, allowing for better energy planning and storage utilization.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 Daule
Seasonal solar PV output for Latitude: -1.8554, Longitude: -79.9849 (Daule, 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 2° North in Daule, Ecuador
To maximize your solar PV system's energy output in Daule, Ecuador (Lat/Long -1.8554, -79.9849) throughout the year, you should tilt your panels at an angle of 2° 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 Daule, 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 Daule, Ecuador. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 2° 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 | 8° North in Autumn | 18° 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 Daule, 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 Daule, 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 Daule, Ecuador
The topography around Daule, Ecuador presents a diverse landscape characterized primarily by lowland plains with gentle undulations, set within the broader context of Ecuador's coastal region. Daule sits in the Guayas River Basin, one of Ecuador's most significant watersheds, with the Daule River serving as a major tributary to the Guayas River. This riverine environment has shaped the surrounding terrain into fertile alluvial plains that gradually transition to more elevated areas as one moves away from the immediate river vicinity. The immediate vicinity of Daule consists predominantly of flat to gently rolling terrain with elevations typically ranging from just a few meters above sea level near the riverbanks to approximately 50-70 meters in the more elevated portions. This relatively flat topography extends throughout much of the surrounding Guayas Province, creating wide open spaces with minimal natural obstructions.
Surrounding Landscape Features
To the east of Daule, the landscape begins a gradual ascent toward the foothills of the Andes Mountains, though these major elevations remain quite distant from Daule itself. The western portions extend toward Ecuador's coastal plains, maintaining their generally flat character as they approach the Pacific Ocean, which lies approximately 60-70 kilometers away. The region experiences a tropical climate with distinct wet and dry seasons, which has influenced the development of the landscape. Natural vegetation in undeveloped areas typically consists of tropical dry forest ecosystems, though much of the surrounding land has been converted to agricultural use due to the fertile soil conditions.Optimal Areas for Solar PV Development
Several characteristics of the Daule region make it potentially suitable for large-scale solar photovoltaic development. The most promising areas would be the elevated plains to the northeast and east of Daule town, where the terrain rises slightly above the river basin. These areas offer several advantages: The slightly elevated plateaus provide relatively flat expanses that would require minimal grading or terrain modification for solar array installation. These higher grounds also typically experience less flooding risk compared to the immediate river basin areas, an important consideration given the region's seasonal rainfall patterns. Agricultural lands that are currently underutilized or of lower productivity value would present opportunities for solar development with minimal environmental impact. Particularly promising are the drier upland areas that extend toward the canton of Santa LucĂa and Palestina, where the combination of open terrain and reduced humidity might benefit solar panel efficiency. Areas to generally avoid would include the immediate floodplains of the Daule River, wetland ecosystems, and regions with significant tree cover or designated ecological importance. The southwestern portions closer to the Guayas River confluence tend to have more complex hydrology and would likely present greater engineering challenges for large installations. The generally open character of the landscape around Daule means that natural shading is minimal across much of the region, though morning fog can occur during certain seasons. The relatively consistent terrain elevation means that east-west tracking systems could be employed efficiently across large areas without significant topographical interference. Local infrastructure considerations would also favor development along the eastern corridors where road access and proximity to existing transmission infrastructure could reduce development costs while taking advantage of the suitable topography.Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Monday 9th of June 2025
Last Updated: Monday 21st of July 2025
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Compare this location to others worldwide for solar PV potential
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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.




