Cartagena, Región de Valparaíso, Chile presents a moderately favorable location for year-round solar PV energy generation, though with significant seasonal variations typical of its Southern Sub Tropics positioning.

Seasonal Solar Performance

The solar energy output at this location shows strong seasonal patterns. Summer delivers the highest production at 7.87 kWh per day per kW of installed solar capacity, making it the peak season for solar generation. Spring follows closely with 7.18 kWh per day per kW, creating an extended period of high solar productivity from approximately September through March. Autumn sees a notable decline to 4.50 kWh per day per kW, while winter represents the challenging period with only 3.17 kWh per day per kW. This winter low point is roughly 40% of summer production, indicating substantial seasonal variation that system designers must account for.

Optimal Installation Configuration

For maximum year-round energy production at Cartagena, Región de Valparaíso, fixed solar panels should be tilted at 29 degrees facing north. This angle optimizes the total annual solar capture by balancing the sun's varying elevation throughout the year.

Local Environmental Challenges

Cartagena's coastal location presents several environmental factors that can impact solar panel performance: **Marine Salt Exposure:** The proximity to the Pacific Ocean means solar installations face constant exposure to salt-laden air. Salt buildup on panel surfaces reduces light transmission and can cause long-term corrosion of mounting hardware and electrical connections. **Coastal Fog and Marine Layer:** The area experiences frequent morning fog and marine layer conditions, particularly during cooler months. This reduces solar irradiance during early morning hours when panels would otherwise begin generating power. **Sand and Dust Accumulation:** Coastal winds can carry sand particles and dust that accumulate on panel surfaces, creating a film that blocks sunlight and reduces energy output over time.

Preventative Installation Measures

To maximize solar energy production despite these coastal challenges, several installation strategies prove effective:

• Install panels with adequate spacing between rows to allow natural wind cleaning and reduce salt accumulation in stagnant air pockets
• Use marine-grade mounting hardware made from stainless steel or aluminum with appropriate coatings to resist salt corrosion
• Apply anti-reflective coatings designed for coastal environments that help panels self-clean during rain
• Implement regular cleaning schedules, particularly during dry periods when natural rainfall cannot remove accumulated salt and dust
• Position electrical components in weatherproof enclosures with proper ventilation to prevent moisture damage from humid coastal air

Regular maintenance becomes particularly important in this coastal environment, with monthly visual inspections and quarterly professional cleaning recommended to maintain optimal energy production throughout the year.

Note: The Southern Sub Tropics extend from -23.5° latitude South down to -35° latitude.

So far, we have conducted calculations to evaluate the solar photovoltaic (PV) potential in 115 locations across Chile. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Chile by location

Solar output per kW of installed solar PV by season in Cartagena

Seasonal solar PV output for Latitude: -33.5487, Longitude: -71.6088 (Cartagena, Chile), 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 29° North in Cartagena, Chile

To maximize your solar PV system's energy output in Cartagena, Chile (Lat/Long -33.5487, -71.6088) throughout the year, you should tilt your panels at an angle of 29° 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 Cartagena, Chile

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 Cartagena, Chile. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 29° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
17° North in Summer	39° North in Autumn	49° North in Winter	26° 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 Cartagena, Chile

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 Cartagena, Chile.

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 Cartagena, Chile

Topography Around Cartagena, Chile

Cartagena sits along Chile's central coast in the Valparaíso Region, positioned on a dramatic stretch of Pacific coastline where the Andes Mountains meet the sea. The immediate area features a fascinating blend of coastal plains, rolling hills, and steep escarpments that create a varied and striking landscape. The town itself is perched on coastal terraces and bluffs that rise directly from sandy beaches and rocky shorelines, offering spectacular ocean views while being sheltered by higher elevations inland.

Moving eastward from the coast, the terrain transitions through several distinct zones. The narrow coastal plain gives way to a series of undulating hills and valleys that gradually increase in elevation as they approach the foothills of the Coastal Range. These intermediate elevations are characterized by gentle to moderate slopes, interspersed with broader valley floors that have historically been used for agriculture and settlement. The topography becomes increasingly rugged further inland, with steeper gradients and more pronounced elevation changes as the landscape builds toward the higher peaks of the Andes.

The region's geological foundation consists primarily of sedimentary and volcanic formations that have been shaped by millions of years of tectonic activity and erosion. This has created a complex pattern of ridges, valleys, and plateaus that define the local terrain. Many areas feature relatively stable ground conditions, though the proximity to active geological zones means that seismic considerations are important for any major infrastructure development.

Optimal Areas for Large-Scale Solar Development

The most promising locations for extensive solar photovoltaic installations lie in the inland valleys and plateau areas, particularly those situated between 5 and 20 kilometers east of the coastline. These zones offer the ideal combination of relatively flat or gently sloping terrain, reduced coastal fog influence, and sufficient space for large-scale development. The broader valley floors in this intermediate zone provide extensive areas of suitable land that can accommodate the substantial footprint required for utility-scale solar farms.

The elevated plateaus and mesa-like formations found throughout the region present particularly attractive opportunities for solar development. These areas typically feature stable, level ground with excellent drainage characteristics and minimal vegetation coverage. Their elevated position above the immediate coastal zone means they experience less frequent fog cover while still benefiting from the region's generally favorable climate conditions. The natural topography of these plateaus often provides inherent wind protection, which can be beneficial for solar panel stability and maintenance access.

Valley floors that run parallel to the coast, particularly those with north-facing slopes on their southern edges, offer additional prime locations for solar installations. These areas combine the advantages of relatively level terrain for construction and maintenance with optimal solar exposure angles. The natural drainage patterns in these valleys also help ensure that solar installations remain above flood-prone areas during Chile's winter rainy season.

Areas closer to the immediate coastline, while scenic and easily accessible, present more challenges for large-scale solar development due to the frequent marine fog that characterizes this coastal zone. The steep coastal bluffs and terraces, while offering dramatic vistas, are generally too constrained and unstable for major solar installations. Similarly, the higher elevation areas further inland, while receiving excellent solar exposure, often feature terrain that is too steep or rugged for cost-effective large-scale development.

Chile solar PV Stats as a country

Chile ranks 22nd in the world for cumulative solar PV capacity, with 4,468 total MW's of solar PV installed. This means that 9.10% of Chile's total energy as a country comes from solar PV (that's 5th in the world). Each year Chile is generating 234 Watts from solar PV per capita (Chile ranks 21st in the world for solar PV Watts generated per capita). [source]

Are there incentives for businesses to install solar in Chile?

Yes, there are several incentives for businesses wanting to install solar energy in Chile. The Chilean government offers a range of financial incentives and tax credits for businesses that invest in renewable energy projects. These include grants, loans, and subsidies for the installation of solar panels. Additionally, businesses can benefit from net metering policies which allow them to sell excess electricity back to the grid at a premium rate. Finally, businesses may also be eligible for additional incentives 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 Chile? Please reach out to us and help us keep this information current. Thanks!

Citation Guide

Article Details for Citation

Tell Us About Your Work

We love seeing how our research helps others! If you've cited this article in your work, we'd be delighted to hear about it. Drop us a line via our Contact Us page or on X, to share where you've used our information - we may feature a link to your work on our site. This helps create a network of valuable resources for others in the solar energy community and helps us understand how our research is contributing to the field. Plus, we occasionally highlight exceptional works that reference our research on our social media channels.

Feeling generous?

Share this with your friends!

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.