La Serena, Coquimbo Region, Chile presents an excellent location for year-round solar energy generation, with consistently strong performance across all seasons. Located in the Southern Sub Tropics at coordinates -29.907, -71.2562, this coastal city benefits from Chile's renowned solar resources along the Atacama Desert region.

Seasonal Solar Performance

The solar energy output at La Serena shows impressive consistency throughout the year. Summer delivers the highest production at 7.33kWh per day per kW of installed capacity, making it the peak season for solar generation. Spring follows as the second-best performing season with 6.33kWh per day per kW, offering nearly comparable output to summer months. Autumn maintains solid production levels at 4.64kWh per day per kW, while winter represents the lowest output period at 3.47kWh per day per kW. Even during the winter months, the production remains substantial compared to many global locations, making La Serena viable for year-round solar energy projects. For optimal performance, fixed solar panels at this location should be tilted at 26 degrees facing north to maximize total annual energy production. This angle has been calculated to account for the sun's path throughout the year and the site's specific latitude.

Environmental and Weather Considerations

Several local factors could potentially impact solar production efficiency at La Serena:

• Marine salt spray from the Pacific Ocean can accumulate on solar panels, reducing light transmission and energy output
• Coastal humidity and morning fog may temporarily reduce solar irradiance during certain periods
• Wind-borne sand and dust from nearby desert regions can create a film on panel surfaces
• Seismic activity common to Chile's coastal regions requires robust mounting systems

Preventative Measures for Enhanced Performance

To maximize solar energy production despite these environmental challenges, several installation strategies prove effective: Regular cleaning schedules become essential in this coastal desert environment. Installing automated cleaning systems or planning frequent manual cleaning helps maintain optimal panel efficiency by removing salt deposits and dust accumulation. Selecting corrosion-resistant mounting hardware and electrical components designed for marine environments extends system longevity. Stainless steel or specially coated aluminum mounting systems resist salt air corrosion better than standard materials. Proper panel spacing allows natural wind flow to help self-clean panels and reduces moisture retention that could encourage salt crystal formation. Adequate ventilation behind panels also prevents overheating in the strong desert sun. Installing monitoring systems enables quick detection of performance drops, allowing prompt maintenance before efficiency losses become significant. This proves particularly valuable in remote locations where problems might otherwise go unnoticed. Despite these considerations, La Serena's exceptional solar resource and relatively manageable environmental challenges make it an outstanding location for solar energy projects with proper planning and maintenance protocols.

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 La Serena

Seasonal solar PV output for Latitude: -29.907, Longitude: -71.2562 (La Serena, 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 26° North in La Serena, Chile

To maximize your solar PV system's energy output in La Serena, Chile (Lat/Long -29.907, -71.2562) throughout the year, you should tilt your panels at an angle of 26° 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 La Serena, 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 La Serena, Chile. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 26° North 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	35° North in Autumn	45° North in Winter	23° 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 La Serena, 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 La Serena, 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 La Serena, Chile

Topographical Features Around La Serena

La Serena sits in a unique geographical position along Chile's northern coast, where the Atacama Desert meets the Pacific Ocean. The city itself is positioned on a relatively flat coastal plain that extends inland for several kilometers before encountering the foothills of the Andes Mountains. This coastal terrace provides stable, level ground that gradually rises from sea level to approximately 200 meters in elevation as one moves eastward from the shoreline.

The immediate surroundings feature gently rolling hills and broad valleys that characterize the transition zone between the coastal plain and the mountain ranges. To the east, the terrain becomes increasingly mountainous, with the Cordillera de los Andes rising dramatically to form peaks exceeding 4,000 meters in elevation. These mountains create a natural barrier that contributes to the region's extremely arid climate by blocking moisture-bearing clouds from the interior.

The landscape is predominantly desert, with sparse vegetation consisting mainly of drought-resistant shrubs and cacti. The soil composition varies from sandy coastal deposits to rocky, mineral-rich terrain further inland. Several dry river valleys, known as quebradas, cut through the landscape, creating natural corridors that extend from the mountains toward the coast. During rare rainfall events, these valleys may temporarily carry water, but they remain dry throughout most of the year.

Optimal Areas for Large-Scale Solar Development

The broad coastal plain extending east from La Serena presents the most favorable conditions for large-scale solar photovoltaic installations. This area combines relatively flat terrain with minimal vegetation, reducing both construction costs and environmental impact. The stable geological conditions and good accessibility via existing road networks make these plains particularly attractive for utility-scale projects.

The elevated plateaus and gentle slopes found approximately 10 to 30 kilometers inland from the coast offer excellent potential for solar development. These areas benefit from higher elevation while maintaining manageable gradients for installation and maintenance access. The terrain in these zones typically requires minimal grading, and the rocky substrate provides solid foundations for mounting systems.

Several of the wider quebradas present opportunities for solar installations, particularly where they open into broader valley floors. These locations often feature relatively flat terrain sheltered from coastal winds while maintaining good solar exposure. The natural drainage patterns also help with water management during the infrequent but intense rainfall events that can occur in the region.

Areas further inland, while offering excellent solar conditions, may present challenges related to transmission infrastructure and access roads. The increasingly mountainous terrain beyond 50 kilometers from the coast generally becomes less suitable for large-scale development due to steep slopes and difficult access, though smaller installations might still be feasible on appropriately oriented hillsides.

The region's minimal cloud cover, low humidity, and stable atmospheric conditions create ideal circumstances for solar energy generation. The lack of significant vegetation means that land clearing requirements are minimal, and the sparse population density reduces potential conflicts over land use. However, developers must consider the occasional coastal fog that can affect areas closer to the ocean, making sites slightly further inland potentially more consistent for energy production.

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.