El Doncello, Departamento del Caquetá, Colombia presents a moderately good location for year-round solar energy generation, though it faces some typical tropical challenges that require careful consideration during installation planning.
Solar Energy Performance
The solar output data shows that El Doncello experiences seasonal variation in energy production, with autumn and winter being the most productive periods. During autumn, solar panels generate approximately 5.27 kWh per day per kW of installed capacity, while winter produces 5.22 kWh per day per kW. Spring and summer show lower production rates at 4.39 kWh and 4.34 kWh per day per kW respectively. For optimal year-round performance, solar panels should be installed at a fixed tilt angle of 3 degrees facing south. This shallow angle maximizes total annual energy production by accounting for the location's proximity to the equator and the sun's path throughout the year.Environmental and Weather Challenges
Being located in the tropics, El Doncello faces several environmental factors that can impact solar panel performance:- High humidity levels that can accelerate corrosion of electrical components and mounting systems
- Frequent tropical rainfall during wet seasons that can cause water ingress issues if panels aren't properly sealed
- Potential for severe weather events including heavy storms and high winds
- Rapid vegetation growth that can create shading issues over time
- Higher ambient temperatures that can reduce panel efficiency
Preventative Installation Measures
To maximize energy production and system longevity in this tropical environment, several preventative measures should be implemented during installation: Proper drainage and ventilation systems are essential to prevent water accumulation and allow adequate airflow behind panels. This helps manage both moisture and heat buildup that can reduce efficiency. All electrical connections should use marine-grade or tropical-rated components with enhanced corrosion resistance. Junction boxes and inverters need weatherproof enclosures rated for high humidity environments. Mounting systems should be constructed from corrosion-resistant materials such as anodized aluminum or stainless steel, with robust anchoring designed to withstand tropical storm conditions. Regular vegetation management around the installation site prevents shading issues, while selecting panel locations that account for future tree growth ensures long-term performance isn't compromised. Installing panels with adequate spacing between rows and proper ground clearance helps maintain airflow and reduces the impact of high ambient temperatures on system efficiency.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 173 locations across Colombia. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Colombia by location
Solar output per kW of installed solar PV by season in El Doncello
Seasonal solar PV output for Latitude: 1.6774, Longitude: -75.2809 (El Doncello, Colombia), 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 3° South in El Doncello, Colombia
To maximize your solar PV system's energy output in El Doncello, Colombia (Lat/Long 1.6774, -75.2809) throughout the year, you should tilt your panels at an angle of 3° South 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 El Doncello, Colombia
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 El Doncello, Colombia. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 3° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 14° North in Summer | 8° South in Autumn | 18° South in Winter | 5° 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 El Doncello, Colombia
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 El Doncello, Colombia.
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 El Doncello, Colombia
Topographical Features of El Doncello
El Doncello sits in the Caquetá Department of Colombia, positioned within the Amazon Basin's northern reaches where the Andean foothills gradually transition into the vast lowland plains. The terrain around this municipality is characterized by gently rolling hills and undulating landscapes that slope gradually eastward toward the Amazon River system. Elevations in the immediate vicinity typically range from approximately 300 to 600 meters above sea level, creating a moderately elevated plateau that overlooks the broader Amazonian lowlands to the east. The topography reflects the geological transition zone between the Eastern Cordillera of the Colombian Andes and the sedimentary plains of the Amazon Basin. This results in a landscape of moderate relief with scattered hills, shallow valleys, and extensive areas of relatively flat to gently sloping terrain. The region's rivers, including tributaries of the Caquetá River system, have carved shallow valleys through the landscape, creating a network of waterways that drain eastward into the Amazon Basin.Vegetation and Land Use Patterns
The natural vegetation around El Doncello consists primarily of tropical rainforest, though much of the original forest cover has been modified through agricultural activities and cattle ranching. The remaining forested areas are typically found on steeper slopes and in areas less accessible for development. Agricultural lands, pastures, and settlements occupy much of the flatter terrain and gentler slopes throughout the region. The climate supports dense vegetation growth where forests remain intact, while cleared areas are predominantly used for cattle grazing and crop cultivation. This land use pattern has created a mosaic landscape of forest patches, agricultural fields, and pastoral areas across the rolling topography.Optimal Areas for Large-Scale Solar Development
The most suitable locations for large-scale solar photovoltaic installations around El Doncello would be found on the extensive areas of gently sloping to flat terrain that characterize much of the region's topography. These areas, typically with gradients of less than 10 degrees, would minimize the need for extensive grading and reduce installation costs while maximizing the efficiency of solar panel arrays. The cleared agricultural lands and pastures present particularly attractive opportunities for solar development, as they already lack forest cover and often have relatively uniform topography. These areas would require minimal environmental impact compared to forested locations and could potentially allow for dual land use arrangements with local farmers and ranchers. Areas with southern-facing slopes in the gently rolling terrain would be especially well-suited for solar installations, as they would receive optimal solar exposure throughout the day. The moderate elevations around El Doncello also provide advantages in terms of reduced atmospheric interference compared to lower-lying areas in the Amazon Basin. The relatively stable geological conditions of this transitional zone between the Andes and the Amazon Basin would support the infrastructure requirements for large-scale solar installations. The terrain's accessibility and proximity to existing transportation networks around El Doncello would facilitate construction and maintenance activities for solar facilities.Colombia solar PV Stats as a country
Colombia ranks 74th in the world for cumulative solar PV capacity, with 184 total MW's of solar PV installed. Each year Colombia is generating 4 Watts from solar PV per capita (Colombia ranks 81st in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Colombia?
Yes, there are several incentives for businesses wanting to install solar energy in Colombia. The Colombian government offers a range of financial incentives and tax breaks for businesses that invest in renewable energy projects. These include grants, loans, and subsidies for the purchase of equipment and installation costs. Additionally, businesses can benefit from net metering policies which allow them to sell excess electricity generated by their solar systems back to the grid at a premium rate. Finally, businesses may also be eligible for additional benefits such as reduced import duties on solar equipment or accelerated depreciation allowances on investments in renewable energy projects.
Do you have more up to date information than this on incentives towards solar PV projects in Colombia? Please reach out to us and help us keep this information current. Thanks!
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Friday 1st of August 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.




