Justo Daract, San Luis, Argentina presents a reasonably good location for year-round solar energy generation, though with notable seasonal variations typical of its Southern Sub Tropics climate zone at latitude -33.8659, longitude -65.1839.
Seasonal Solar Performance
The location shows strong seasonal patterns in solar electricity production. Summer delivers the highest output at 7.75kWh per day per kW of installed solar capacity, making it the peak generation period. Spring follows as the second-best season with 7.03kWh per day per kW, offering nearly comparable performance to summer months. Autumn production drops to 4.67kWh per day per kW, representing a moderate decline from the peak seasons. Winter shows the lowest output at 3.85kWh per day per kW, though this still represents viable solar generation during the cooler months.Optimal Installation Configuration
For maximum year-round energy production at this location, solar panels should be installed at a fixed tilt angle of 30 degrees facing North. This angle has been calculated to optimize total annual solar output by accounting for the sun's varying elevation throughout the year and weighting these angles according to actual solar irradiance data.Environmental and Weather Factors
Several local factors could potentially impact solar energy production at Justo Daract and require consideration during installation:- Dust accumulation: The semi-arid climate typical of this region can lead to significant dust buildup on solar panels, reducing their efficiency over time
- Hail risk: Argentina's pampas region experiences occasional severe thunderstorms that can produce damaging hail
- Wind exposure: The open terrain around Justo Daract can subject solar installations to strong winds
- Temperature extremes: High summer temperatures can reduce panel efficiency, while thermal cycling between seasons can stress equipment
Preventative Measures
To maximize energy production and system longevity, several protective measures should be implemented. Regular cleaning schedules become essential, with monthly panel washing recommended during dry periods and more frequent cleaning during dusty conditions. Automated cleaning systems or easy-access designs can help maintain optimal panel cleanliness. Hail protection requires selecting panels with tempered glass rated for local conditions and considering protective screening or shutters for extreme weather events. Proper mounting systems with adequate wind ratings and secure anchoring will protect against wind damage. Temperature management can be improved through proper panel spacing to allow air circulation, while selecting equipment rated for the local temperature range ensures reliable operation. Quality inverters with good heat dissipation and shading protection will help maintain system efficiency during peak summer conditions.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 519 locations across Argentina. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Argentina by location
Solar output per kW of installed solar PV by season in Justo Daract
Seasonal solar PV output for Latitude: -33.8659, Longitude: -65.1839 (Justo Daract, Argentina), 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 30° North in Justo Daract, Argentina
To maximize your solar PV system's energy output in Justo Daract, Argentina (Lat/Long -33.8659, -65.1839) throughout the year, you should tilt your panels at an angle of 30° 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 Justo Daract, Argentina
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 Justo Daract, Argentina. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 30° North tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 18° North in Summer | 39° North in Autumn | 49° North in Winter | 27° 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 Justo Daract, Argentina
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 Justo Daract, Argentina.
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 Justo Daract, Argentina
Topographical Features Around Justo Daract
The landscape surrounding Justo Daract in San Luis Province presents a predominantly flat to gently rolling terrain characteristic of the Argentine Pampas region. This area sits within the transitional zone between the fertile eastern plains and the more arid western regions of central Argentina. The topography consists mainly of low-lying plains with occasional gentle undulations and scattered low hills that rarely exceed modest elevations above the surrounding countryside. The terrain features broad, open expanses of relatively level ground interspersed with subtle ridges and shallow valleys. These geographical formations create a landscape that appears almost table-flat from a distance but reveals gentle contours upon closer examination. The area experiences minimal dramatic elevation changes, with gradual slopes that extend across considerable distances without significant obstacles or steep gradients. Local drainage patterns have carved modest depressions and channels through the landscape, though these features remain relatively shallow and do not create substantial topographical barriers. The soil composition in this region typically consists of sedimentary deposits that have accumulated over geological time periods, resulting in stable ground conditions suitable for various land uses.Optimal Areas for Large-Scale Solar Development
The expansive flat plains immediately surrounding Justo Daract represent the most promising locations for large-scale solar photovoltaic installations. These areas offer several key advantages including minimal grading requirements, reduced construction costs, and optimal panel positioning opportunities. The level terrain eliminates concerns about shading between panel rows and allows for efficient use of available land area. Areas to the north and west of the town appear particularly well-suited for solar development due to their combination of flat topography and distance from residential areas. These locations provide sufficient space for extensive solar arrays while maintaining appropriate buffers from populated zones. The stable soil conditions in these areas would support the foundation requirements for large solar installations without requiring extensive ground preparation. The gentle slopes found in some areas around Justo Daract can also accommodate solar installations, particularly those with southern-facing orientations that could enhance energy capture. However, the completely flat areas remain preferable for large-scale projects due to their simplified installation requirements and maintenance accessibility. Agricultural land surrounding the town, while topographically suitable, may face competing land use pressures. The most viable locations for solar development would likely be areas where agricultural productivity remains limited or where dual land use arrangements could be established. The open nature of the landscape ensures that large solar installations would not face significant obstacles from existing infrastructure or natural barriers.Argentina solar PV Stats as a country
Argentina ranks 43rd in the world for cumulative solar PV capacity, with 1,071 total MW's of solar PV installed. This means that 1.50% of Argentina's total energy as a country comes from solar PV (that's 35th in the world). Each year Argentina is generating 24 Watts from solar PV per capita (Argentina ranks 63rd in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Argentina?
Yes, there are several incentives for businesses wanting to install solar energy in Argentina. The government offers a range of tax credits and subsidies for businesses that invest in renewable energy projects. Additionally, the country has implemented a net metering system which allows businesses to sell excess electricity generated from their solar installations back to the grid at a premium rate. Finally, the government also provides access to low-interest loans and grants for businesses looking to invest in solar energy projects.
Do you have more up to date information than this on incentives towards solar PV projects in Argentina? Please reach out to us and help us keep this information current. Thanks!
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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Sunday 6th of July 2025
Last Updated: Wednesday 6th 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.




