Calafell, Catalonia, Spain is a reasonably good location for year-round solar energy generation, though like most locations in the Northern Temperate Zone, it experiences significant seasonal variation in solar output.

Seasonal Solar Performance

The location shows strong summer performance with 7.31kWh per day per kW of installed solar capacity, making the summer months the prime time for solar energy generation. Spring also offers good production at 5.77kWh per day per kW, providing another productive season for solar installations. Autumn sees a notable drop to 3.69kWh per day per kW, while winter presents the most challenging conditions with only 2.37kWh per day per kW. This winter figure represents less than one-third of summer production, highlighting the seasonal challenges typical of Mediterranean coastal locations. For a fixed panel installation at this location, the ideal angle to tilt panels to maximise total year-round production from solar PV is 35 degrees South. This optimal angle is calculated by analyzing daily solar elevation angles throughout the year and weighting them according to solar irradiance data to achieve the best annual average performance.

Environmental and Weather Factors

Several local factors in Calafell could potentially impact solar energy production:

• Mediterranean Salt Air: Being a coastal location, salt-laden air can cause corrosion of metal components and create salt deposits on panel surfaces, reducing efficiency over time
• Seasonal Weather Patterns: Mediterranean winters often bring increased cloud cover and occasional storms that can significantly reduce solar output during already low-production months
• Dust and Particulate Matter: Dry summer conditions and proximity to agricultural areas inland can lead to dust accumulation on solar panels
• High Summer Temperatures: While sunny, extremely hot summer days can actually reduce panel efficiency as photovoltaic cells perform less efficiently at very high temperatures

Preventative Measures for Optimal Performance

To maximize solar energy production in Calafell's environment, several preventative measures should be considered during installation. Regular cleaning schedules are essential, particularly during dusty summer periods and after winter storms. Installing panels with anti-reflective coatings can help maintain efficiency even when light dust is present. Choosing corrosion-resistant mounting systems and electrical components specifically rated for marine environments will help combat the effects of salt air. Adequate ventilation space should be maintained behind panels to allow proper cooling during hot summer months, which helps maintain efficiency when temperatures soar. Installing monitoring systems can help identify when panels need cleaning or maintenance, ensuring optimal performance year-round. Additionally, considering micro-inverters or power optimizers can help minimize the impact when individual panels experience shading or soiling issues. Overall, while Calafell presents some environmental challenges typical of Mediterranean coastal locations, proper installation techniques and maintenance practices can help ensure reliable solar energy production throughout the year.

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 Calafell

Seasonal solar PV output for Latitude: 41.2021, Longitude: 1.5744 (Calafell, 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 Calafell, Spain

To maximize your solar PV system's energy output in Calafell, Spain (Lat/Long 41.2021, 1.5744) 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 Calafell, 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 Calafell, 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 Calafell, 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 Calafell, 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.

Topography for solar PV around Calafell, Spain

Topography of Calafell and Surrounding Region

Calafell sits along Spain's Costa Dorada in the province of Tarragona, positioned between the Mediterranean Sea to the southeast and gently rolling inland hills to the northwest. The immediate coastal area around Calafell is characterized by relatively flat terrain, with the town itself built on low-lying land that gradually rises from sea level to modest elevations of around 50-100 meters above sea level within a few kilometers inland.

The landscape transitions from sandy beaches and coastal plains to undulating agricultural land dotted with small settlements. Moving further inland toward the northwest, the terrain becomes more pronounced with the foothills of the Catalan Coastal Range creating a series of rounded hills and shallow valleys. These elevations typically range from 200 to 400 meters above sea level within a 20-kilometer radius of Calafell.

The region features a Mediterranean agricultural landscape with extensive vineyards, olive groves, and cultivated fields spread across the gentler slopes and valley floors. Small streams and seasonal watercourses cut through the terrain, creating natural drainage patterns that flow toward the coast. The soil composition varies from sandy coastal deposits to clay and limestone-based soils in the higher elevations.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations around Calafell would be found in the gently sloping agricultural areas located 5-15 kilometers inland from the coast. These zones offer several advantages including relatively flat to moderately sloping terrain that requires minimal grading, good accessibility via existing rural road networks, and sufficient distance from densely populated coastal areas to minimize visual impact concerns.

The elevated plateaus and broad valley floors in the foothills northwest of Calafell present particularly attractive opportunities. These areas typically feature south-facing slopes with gradients between 5-15 degrees, which are ideal for optimizing solar panel orientation while allowing for efficient drainage and maintenance access. The higher elevation also provides clearer atmospheric conditions compared to the immediate coastal zone, which can experience more frequent morning fog and haze.

Agricultural land in the municipalities surrounding Calafell, particularly in areas with lower soil productivity or those transitioning away from traditional farming, would be prime candidates for solar development. The existing electrical grid infrastructure serving rural communities and agricultural operations provides a foundation for connecting large solar installations to the regional power network.

Areas to avoid would include the immediate coastal strip due to salt air corrosion concerns, steep hillsides that would require extensive earthwork, and densely forested zones in the higher elevations where tree clearing would be environmentally problematic. The flat coastal plain, while topographically suitable, may face restrictions due to proximity to residential areas and tourism infrastructure.

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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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.