The location in Viladecans, Catalonia, Spain, situated at 41.314° N latitude and 2.0127° E longitude, offers a promising environment for solar PV energy generation throughout the year. This Mediterranean coastal town experiences varying levels of solar potential across different seasons, providing opportunities for sustainable energy production.
Seasonal Solar Performance
Solar energy generation in Viladecans follows a predictable pattern, with peak performance during the summer months. The average daily electricity output per kW of installed solar capacity reaches an impressive 7.14 kWh in summer, making it the ideal time for maximum energy production. Spring follows as the second-most productive season, with an average daily output of 5.50 kWh/kW.
Autumn sees a decrease in solar potential, with an average daily output of 3.52 kWh/kW. Winter, as expected, presents the lowest solar generation potential, with an average daily output of 2.38 kWh/kW. Despite the reduced output during colder months, the location still maintains a reasonable level of solar energy production year-round.
Optimal Panel Installation
To maximize the total year-round production from solar PV systems in Viladecans, Catalonia, fixed panels should be installed at a tilt angle of 35 degrees facing south. This optimal angle ensures that the panels capture the most sunlight throughout the year, accounting for seasonal variations in the sun's position.
Environmental and Weather Considerations
While Viladecans generally offers favorable conditions for solar energy production, there are a few factors to consider:
- Coastal humidity: Being close to the Mediterranean Sea, the area may experience higher humidity levels, which can slightly reduce panel efficiency.
- Occasional dust storms: The region may be affected by Saharan dust events, which can temporarily decrease solar panel performance.
To mitigate these potential issues, regular cleaning and maintenance of solar panels is recommended. Additionally, installing panels with anti-reflective coatings and using micro-inverters or power optimizers can help maintain efficiency in varying weather conditions.
Overall, Viladecans presents a highly suitable location for solar PV energy generation, with strong potential during summer and spring months and reasonable output throughout the year. The optimal panel tilt angle and awareness of local environmental factors contribute to maximizing energy production at this Mediterranean site.
Note: The Northern Temperate Zone extends from 35° latitude North up to 66.5° latitude.
So far, we have conducted calculations to evaluate the solar photovoltaic (PV) potential in 361 locations across Spain. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Spain by location
Solar output per kW of installed solar PV by season in Viladecans
Seasonal solar PV output for Latitude: 41.314, Longitude: 2.0127 (Viladecans, Spain), 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 35° South in Viladecans, Spain
To maximize your solar PV system's energy output in Viladecans, Spain (Lat/Long 41.314, 2.0127) throughout the year, you should tilt your panels at an angle of 35° 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 Viladecans, Spain
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 Viladecans, Spain. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 35° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 25° South in Summer | 45° South in Autumn | 56° South in Winter | 34° South 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 Viladecans, Spain
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 Viladecans, Spain.
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 Viladecans, Spain
Viladecans, located in the province of Barcelona, Spain, is situated in a diverse topographical region. The town itself lies on relatively flat terrain, part of the coastal plain that stretches along the Mediterranean Sea. To the west and northwest of Viladecans, the land gradually rises into the foothills of the Garraf Massif, a mountainous area characterized by limestone formations and rugged terrain. The immediate surroundings of Viladecans feature a mix of urban development, agricultural land, and natural areas. The coastal plain, where the town is situated, is predominantly flat with slight undulations. This area has been heavily modified by human activity, with much of the land used for agriculture, urban development, and infrastructure. As one moves inland from Viladecans, the landscape becomes more varied. The terrain begins to rise gently, forming low hills that gradually transition into the more pronounced elevations of the Garraf Massif. These hills are often covered with Mediterranean vegetation, including pine forests and shrublands typical of the region's climate.
Potential Areas for Large-Scale Solar PV
When considering areas suitable for large-scale solar photovoltaic (PV) installations near Viladecans, several factors come into play. The most suitable locations would ideally combine favorable topography, good solar exposure, and minimal environmental impact. The flat areas of the coastal plain surrounding Viladecans offer potential for solar PV development. These areas benefit from their level terrain, which simplifies construction and maintenance of solar arrays. However, competition with agricultural and urban land use may limit available space in these areas. The gently sloping hills to the west and northwest of Viladecans present another opportunity for solar PV installations. These areas often have good solar exposure due to their slight elevation and southern-facing slopes. The terrain is not too steep, making it feasible for large-scale installations while potentially having less competition with other land uses. Some of the more elevated areas in the foothills of the Garraf Massif could also be suitable for solar PV. These locations might benefit from increased solar radiation due to their higher altitude and potentially fewer obstructions. However, steeper slopes and more rugged terrain in these areas could increase construction and maintenance costs. It's important to note that any large-scale solar PV development would need to carefully consider environmental impacts, particularly in the more natural areas surrounding Viladecans. Balancing energy production with conservation of the region's unique Mediterranean ecosystems would be crucial in determining the most appropriate locations for such installations.Spain solar PV Stats as a country
Spain ranks 10th in the world for cumulative solar PV capacity, with 15,952 total MW's of solar PV installed. This means that 9.00% of Spain's total energy as a country comes from solar PV (that's 6th in the world). Each year Spain is generating 237 Watts from solar PV per capita (Spain ranks 20th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Spain?
Yes, there are several incentives for businesses wanting to install solar energy in Spain. These include the following:
1. The Spanish government offers a feed-in tariff (FIT) for businesses that install solar energy systems. This FIT guarantees a fixed price per kWh of electricity generated by the system over a period of 20 years.
2. Businesses can also benefit from tax deductions and other financial incentives when installing solar energy systems in Spain.
3. Companies may be eligible for grants or subsidies from regional governments or local authorities to help cover the cost of installation and maintenance of their solar energy systems.
4. Businesses may also be able to take advantage of net metering, which allows them to sell excess electricity generated by their solar energy system back into the grid at market prices, thus reducing their overall electricity costs even further.
Do you have more up to date information than this on incentives towards solar PV projects in Spain? 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: Friday 18th of April 2025
Last Updated: Thursday 21st 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.
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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.




