Solar Energy Potential in Iquique, Tarapacá, Chile

Iquique, Tarapacá, Chile, located at latitude -20.2234 and longitude -70.1456, offers compelling conditions for solar energy generation throughout the year. This coastal city in northern Chile sits within the tropics, providing it with relatively consistent sunlight patterns compared to locations at higher latitudes. The solar electricity generation potential varies significantly across seasons. Summer proves to be the most productive period, with an impressive 8.48kWh per day for each kilowatt of installed solar capacity. Spring follows as the second most productive season, yielding 6.46kWh daily per kilowatt. Autumn provides moderate generation at 5.91kWh per day, while winter shows the lowest output at 3.78kWh daily per kilowatt of installed capacity.

Seasonal Variations and Optimal Generation Times

The substantial difference between summer and winter production (with summer generating more than twice the electricity of winter) indicates that while Iquique benefits from its tropical location, it still experiences meaningful seasonal variations in solar potential. The most favorable period for solar generation spans from late spring through summer (November through February in the Southern Hemisphere), when longer days and more direct sunlight maximize energy capture. For fixed solar panel installations in Iquique, Tarapacá, the ideal tilt angle to maximize year-round energy production is 17 degrees facing North. This specific angle optimizes the panels' exposure to the sun throughout the year, accounting for the Earth's elliptical orbit and Iquique's particular latitude.

Environmental and Weather Considerations

Several environmental factors could potentially impact solar production in Iquique:

• Coastal fog (camanchaca): Iquique's location on the Pacific coast means it experiences morning coastal fog, particularly during certain seasons, which can temporarily reduce solar radiation reaching panels.
• Desert dust: The proximity to the Atacama Desert means dust accumulation on panels can be significant, potentially reducing efficiency by 10-30% if not addressed.
• Salt corrosion: Being a coastal location, salt spray can accelerate corrosion of mounting hardware and electrical components.

Preventative Measures for Installation

To maximize solar energy production in Iquique despite these challenges, several preventative measures can be implemented: Installing automated or scheduled cleaning systems helps manage dust accumulation efficiently. Using marine-grade materials and protective coatings for all components can prevent salt-related corrosion. Elevating panels slightly higher than standard installations may help reduce the impact of morning coastal fog. Additionally, while the ideal fixed tilt is 17 degrees North, incorporating tracking systems could increase annual energy production by up to 25% by following the sun's daily path, though this comes with higher installation and maintenance costs. Despite the seasonal variations, Iquique's location in the Atacama region—one of the world's best solar resources—makes it an excellent candidate for solar energy production, with annual averages significantly higher than many other populated regions globally.

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 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 Iquique

Seasonal solar PV output for Latitude: -20.2234, Longitude: -70.1456 (Iquique, 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 17° North in Iquique, Chile

To maximize your solar PV system's energy output in Iquique, Chile (Lat/Long -20.2234, -70.1456) throughout the year, you should tilt your panels at an angle of 17° 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 Iquique, 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 Iquique, Chile. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 17° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
5° North in Summer	25° North in Autumn	35° North in Winter	13° 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 Iquique, 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 Iquique, 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 Iquique, Chile

Iquique, Chile, sits in a remarkable geographical setting along the northern Chilean coast, nestled between the Pacific Ocean and the dramatic rise of the Coastal Cordillera. This coastal city exists in what might be considered a geographical paradox - a narrow strip of habitable land sandwiched between one of the world's driest deserts and the vast Pacific Ocean. The immediate topography around Iquique is defined by a coastal plain that quickly gives way to steep escarpments. The city itself occupies a thin strip of relatively flat land before the terrain rises abruptly eastward into the coastal mountains, which form a natural wall that can reach heights of over 1,000 meters within just a few kilometers from the shoreline. This dramatic elevation change creates a striking visual backdrop to the city.

The Atacama Desert Highlands

Moving inland from Iquique, the landscape transforms into the Atacama Desert plateau, one of Earth's most arid environments. This high desert plain sits at elevations ranging from approximately 1,000 to 2,500 meters above sea level. The topography here features vast, flat expanses interrupted by occasional dry riverbeds (quebradas), salt flats (salares), and isolated hills and mountains. The exceptional aridity of this region results from its position in the rain shadow of the Andes Mountains to the east, combined with the effects of the cold Humboldt Current offshore. These conditions create an environment that receives minimal precipitation, often measured in millimeters per decade rather than per year in some locations.

Solar Potential Regions

The inland desert plateaus east of Iquique present ideal conditions for large-scale solar photovoltaic development. Several factors make these areas particularly suitable: The elevated desert plains between 20 and 100 kilometers east of Iquique offer extensive flat terrain that would require minimal grading for solar array installation. These areas sit above the coastal fog zone (known locally as the "camanchaca") that can affect the immediate coastal regions. The Pampa del Tamarugal, a flat desert basin located approximately 40-80 kilometers east of Iquique, presents particularly favorable conditions. This expansive plain offers the combination of flat topography, extremely clear skies, and minimal competing land uses that solar developers seek. Areas near existing transportation corridors, such as the regions adjacent to Route 5 (the Pan-American Highway) and Route 16, would provide logistical advantages for construction and maintenance of solar facilities while minimizing the need for new access road development.

Topographical Challenges

Despite the abundant suitable land, several topographical factors must be considered for solar development. The numerous dry quebradas that cut through the desert plateau can present flooding risks during rare but intense rainfall events. Additionally, some areas experience strong afternoon winds as air masses move between the coast and the interior, which could impact solar panel mounting requirements. The remote nature of the optimal solar regions also presents infrastructure challenges. While the flat terrain is ideal for solar arrays, the distance from population centers and existing electrical infrastructure necessitates significant transmission line development to connect generation to consumption points. The northern Chilean government has recognized these favorable conditions and has already permitted several large solar projects in the broader Tarapacá Region where Iquique is located. The combination of exceptional solar resources and suitable topography continues to attract international renewable energy developers to this unique corner of South America.

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!

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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.