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Graph of hourly avg kWh electricity output per kW of Solar PV installed in El Astillero, Spain (by season)

Solar Energy Potential in El Astillero, Cantabria, Spain

El Astillero, Cantabria, located in northern Spain, presents a moderate opportunity for solar energy generation throughout the year. This coastal location in the Northern Temperate Zone experiences significant seasonal variations in solar production potential. The solar energy output at El Astillero follows a clear seasonal pattern. Summer months are the most productive, generating approximately 5.91 kWh per day for each kilowatt of installed solar capacity. Spring follows closely behind with 5.11 kWh/day per kW. Production drops considerably in autumn to 3.11 kWh/day per kW, while winter sees the lowest output at just 1.74 kWh/day per kW. For residents or businesses considering solar installation in El Astillero, Cantabria, the optimal time for maximum energy generation spans from late spring through early autumn. During these months, longer days and more direct sunlight create ideal conditions for solar energy production.

Optimal Panel Installation

For fixed solar panel installations in El Astillero, Cantabria, the ideal tilt angle is 37 degrees facing South. This specific angle maximizes year-round energy production by optimizing the panels' exposure to the sun's rays throughout the changing seasons. Proper installation at this precise angle can significantly improve overall system efficiency and energy output.

Environmental Considerations

Several environmental factors in El Astillero may affect solar energy production. The coastal location means that salt spray and humidity can potentially damage solar equipment over time. Installing marine-grade components and ensuring proper sealing of all electrical connections can mitigate these risks. Fog and cloud cover, common in northern Spain's coastal regions, can temporarily reduce solar output. While this is unavoidable, using high-efficiency panels designed to perform better in diffuse light conditions can help maximize energy production even on overcast days. Additionally, the region experiences moderate rainfall throughout the year. Installing panels with good self-cleaning properties and maintaining a sufficient tilt angle (the recommended 37 degrees) will allow rainwater to naturally clean the panels, removing dust and debris that might otherwise reduce efficiency. Regular maintenance and cleaning schedules tailored to local conditions will help ensure optimal performance of solar installations in El Astillero throughout their operational lifetime.

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 El Astillero

Seasonal solar PV output for Latitude: 43.4016, Longitude: -3.8153 (El Astillero, 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:

Summer
Average 5.91kWh/day in Summer.
Autumn
Average 3.11kWh/day in Autumn.
Winter
Average 1.74kWh/day in Winter.
Spring
Average 5.11kWh/day in Spring.

 

Ideally tilt fixed solar panels 37° South in El Astillero, Spain

To maximize your solar PV system's energy output in El Astillero, Spain (Lat/Long 43.4016, -3.8153) throughout the year, you should tilt your panels at an angle of 37° 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.

The sun
At Latitude: 43.4016, Longitude: -3.8153, the ideal angle to tilt panels is 37° South

Seasonally adjusted solar panel tilt angles for El Astillero, 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 El Astillero, Spain. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 37° South tilt angle throughout the year.

Overall Best Summer Angle Overall Best Autumn Angle Overall Best Winter Angle Overall Best Spring Angle
27° South in Summer 47° South in Autumn 58° South in Winter 36° South in Spring

Assuming you can modify the tilt angle of your solar PV panels throughout the year, you can optimize your solar generation in El Astillero, Spain as follows: In Summer, set the angle of your panels to 27° facing South. In Autumn, tilt panels to 47° facing South for maximum generation. During Winter, adjust your solar panels to a 58° angle towards the South for optimal energy production. Lastly, in Spring, position your panels at a 36° angle facing South to capture the most solar energy in El Astillero, Spain.

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 El Astillero, 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 El Astillero, Spain.

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.






Please enter information above to calculate panel spacing.

Topography for solar PV around El Astillero, Spain

El Astillero is located in northern Spain, within the autonomous community of Cantabria. The area features a diverse topography characterized by a mixture of coastal plains, gentle hills, and more pronounced elevations as one moves inland. Situated at the southern end of the Bay of Santander, El Astillero enjoys a privileged position where the Solía River meets the bay, creating an estuary environment. The immediate surroundings of El Astillero consist of relatively flat terrain near the coast, with elevations generally below 50 meters above sea level. This coastal plain provides easy access to the Bay of Santander and has historically been important for the town's development as a shipbuilding center, which is reflected in its name ("El Astillero" means "The Shipyard" in Spanish).

Surrounding Topographical Features

Moving slightly inland from El Astillero, the landscape begins to rise gradually into rolling hills. To the south and southwest, the terrain becomes more undulating as it transitions toward the Cantabrian Mountains. These hills range from 100 to 300 meters in elevation and feature a mixture of pastures, woodlands, and small agricultural plots. The broader region is influenced by the Cantabrian Mountain range, which runs parallel to the coast throughout northern Spain. While the highest peaks of this range are further inland, their foothills begin to appear within 20-30 kilometers south of El Astillero, creating a dramatic backdrop to the coastal areas. Water features significantly impact the local topography. Beyond the Bay of Santander to the north, several rivers including the Solía, Miera, and Pas have carved valleys through the landscape, creating natural corridors between the hills and mountains.

Areas Suitable for Solar PV Development

For large-scale solar photovoltaic (PV) installations, several areas near El Astillero present potential opportunities, though the region as a whole faces certain challenges compared to southern Spain's more favorable solar conditions. The gently sloping hillsides south of El Astillero, particularly in the direction of Villaescusa and Piélagos, offer promising locations. These areas provide relatively open terrain with south-facing slopes that can maximize solar exposure. The elevation of these hills (between 100-200 meters) also helps them rise above potential morning fog that sometimes affects the coastal lowlands. The plateaus and wider valleys found 10-15 kilometers inland from El Astillero present another option for solar development. These areas offer larger continuous tracts of land that could accommodate substantial installations while still being close enough to existing infrastructure for grid connection. Areas to avoid would include the immediate coastal wetlands and estuaries, which have environmental significance and protection status, as well as the steeper mountain slopes further inland that would complicate construction and maintenance of solar facilities. It's worth noting that while northern Spain receives less solar radiation than the country's southern regions, technological improvements in PV efficiency continue to make solar energy increasingly viable even in areas with moderate insolation levels. The relatively mild temperatures of Cantabria can actually benefit solar panel efficiency, as extreme heat can reduce PV performance. Land previously used for industrial purposes around the outskirts of El Astillero might also present opportunities for solar development, offering the dual benefit of renewable energy production and brownfield reclamation.

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!

Citation Guide

Article Details for Citation

Article: Solar PV Analysis of El Astillero, Spain
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Friday 9th of May 2025
Last Updated: Wednesday 8th of October 2025

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