Tumaco, Nariño, Colombia presents a moderately good location for year-round solar energy generation, with consistent performance across all seasons due to its tropical location near the equator.

Solar Energy Output Performance

The solar energy production at Tumaco remains remarkably stable throughout the year, with daily electricity generation ranging from 4.23 to 4.65 kWh per installed kilowatt of solar panels. Spring emerges as the most productive season, generating 4.65 kWh per day per kW of installed capacity, followed closely by winter at 4.42 kWh per day. Summer and autumn show slightly lower but still solid production at 4.35 and 4.23 kWh per day respectively. This consistency makes Tumaco particularly attractive for solar installations, as energy planners can rely on predictable output without dramatic seasonal variations that plague higher latitude locations.

Optimal Panel Configuration

For fixed solar panel installations in Tumaco, Nariño, the ideal tilt angle is just 1 degree south-facing to maximize total year-round production. This nearly flat positioning reflects the location's proximity to the equator, where the sun passes almost directly overhead throughout the year.

Environmental and Weather Challenges

Tumaco's coastal Pacific location and tropical climate present several significant factors that could impede solar energy production:

• High humidity and salt air: The coastal environment exposes solar equipment to corrosive salt spray and persistent moisture
• Heavy rainfall during wet seasons: Extended periods of cloud cover and precipitation can reduce solar irradiance
• Tropical storms: The region may experience severe weather events that could damage installations
• Rapid vegetation growth: The tropical climate promotes fast-growing plants that can create shading issues

Preventative Measures for Installation

To combat these environmental challenges and ensure optimal energy production, several protective measures should be implemented. Using marine-grade aluminum frames and stainless steel mounting hardware will resist corrosion from salt air. Anti-reflective coatings designed for tropical climates help panels shed water quickly and reduce soiling from humidity-related deposits. Elevated mounting systems improve air circulation around panels, reducing moisture buildup and helping maintain optimal operating temperatures. Regular cleaning schedules become essential to remove salt deposits, dust, and organic matter that accumulate more rapidly in this humid environment. Proper drainage systems around installations prevent water pooling during heavy rains, while strategic vegetation management maintains clear sight lines to prevent shading. Installing lightning protection systems and using wind-resistant mounting designs help protect against severe tropical weather events. Despite these challenges, Tumaco's consistent solar output throughout the year makes it a viable location for solar energy projects, provided proper environmental protections are incorporated into the installation design.

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 Tumaco

Seasonal solar PV output for Latitude: 1.8024, Longitude: -78.815 (Tumaco, 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 1° South in Tumaco, Colombia

To maximize your solar PV system's energy output in Tumaco, Colombia (Lat/Long 1.8024, -78.815) throughout the year, you should tilt your panels at an angle of 1° 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 Tumaco, 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 Tumaco, Colombia. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 1° 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	7° South in Autumn	17° South in Winter	4° 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 Tumaco, 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 Tumaco, Colombia.

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.

Topography for solar PV around Tumaco, Colombia

Topographical Features of the Tumaco Region

Tumaco sits in Colombia's Pacific coastal region, characterized by remarkably flat terrain that extends inland from the ocean. This area forms part of the broader Pacific lowlands, where elevations rarely exceed 50 meters above sea level across vast expanses. The landscape consists primarily of alluvial plains formed by centuries of sediment deposits from numerous rivers that flow westward toward the Pacific Ocean.

The region features an intricate network of rivers, streams, and wetlands that create a complex mosaic of land and water. Mangrove forests dominate much of the coastal zone, while inland areas transition to tropical rainforest and agricultural lands. The terrain remains consistently flat with gentle undulations, making it one of Colombia's most level geographical regions.

Numerous small islands and peninsulas dot the coastal area, connected by a maze of tidal channels and estuaries. These low-lying areas experience regular flooding during high tides and rainy seasons, as the land sits barely above sea level. The soil composition consists mainly of alluvial deposits, clay, and organic matter from decomposed vegetation.

Climate and Weather Patterns

The Tumaco region experiences a tropical rainforest climate with consistently high temperatures and substantial precipitation throughout the year. This coastal area receives some of Colombia's heaviest rainfall, with precipitation occurring frequently and intensely. The wet conditions contribute to the lush vegetation and extensive wetland systems that characterize the landscape.

Cloud cover remains substantial for much of the year, with frequent overcast skies and atmospheric moisture from the nearby Pacific Ocean. The region experiences relatively consistent weather patterns with minimal seasonal variation in temperature, though precipitation levels fluctuate between wetter and slightly drier periods.

Optimal Areas for Large-Scale Solar Development

Despite the challenging climate conditions, certain areas around Tumaco offer better potential for solar photovoltaic installations than others. The most suitable locations would be found inland from the immediate coastal zone, where the terrain remains flat but experiences slightly less maritime influence and cloud cover.

Areas approximately 20 to 40 kilometers inland from Tumaco present the best compromise between accessible flat terrain and reduced coastal weather impacts. These zones maintain the region's characteristic level topography while experiencing marginally better atmospheric conditions for solar energy generation. The flat terrain in these areas would minimize grading and foundation costs for large installations.

Agricultural areas that have already been cleared of forest cover would provide additional advantages, as they eliminate the need for extensive land clearing while offering suitable soil conditions for mounting systems. These cleared zones typically feature firm, well-drained soils that can support heavy solar infrastructure.

Transportation infrastructure also favors certain inland areas, particularly those near existing roads that connect Tumaco to Colombia's interior regions. Access to electrical transmission infrastructure becomes another crucial factor, with areas closer to existing power lines offering significant cost advantages for grid connection.

The relatively stable geological conditions throughout the region present minimal seismic concerns for solar installations. However, careful site selection must account for drainage patterns and flood-prone areas, as the low elevation and high precipitation can create challenging conditions for sensitive electrical equipment.

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!

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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.