Calatayud, Aragon, Spain presents a moderately favorable location for year-round solar PV energy generation, though with significant seasonal variations that potential solar installers should carefully consider.

Seasonal Solar Performance

The solar energy output at this location shows dramatic differences throughout the year. Summer delivers the strongest performance at 7.64 kWh per day per kW of installed solar capacity, making it an excellent time for solar generation. Spring follows as the second-best season with 5.72 kWh per day per kW, providing substantial energy production during the March through May period. Autumn performance drops to 3.82 kWh per day per kW, representing a moderate output level. Winter presents the most challenging conditions with only 2.36 kWh per day per kW, which is quite low and may require careful consideration for systems designed to meet consistent energy demands year-round.

Optimal Installation Configuration

For maximum year-round energy production at Calatayud, Aragon, solar panels should be installed at a fixed tilt angle of 35 degrees facing south. This angle has been calculated to optimize total annual solar output by accounting for the sun's varying position throughout the year and the Earth's elliptical orbit around the sun.

Local Environmental and Weather Factors

Several environmental factors in the Calatayud region could potentially impact solar energy production:

• Dust accumulation from the semi-arid climate common in this part of Aragón
• Occasional severe weather including hailstorms that can damage panels
• Strong winds that may affect panel mounting systems
• Snow coverage during winter months that can temporarily block panels

Preventative Measures for Better Performance

To maximize solar energy production despite these challenges, several installation strategies prove effective: Regular cleaning schedules help combat dust buildup, with automated cleaning systems being particularly valuable in dusty conditions. Installing panels with tempered glass and robust frames provides protection against hail damage, while proper mounting systems designed for high wind loads ensure structural integrity. For winter snow concerns, installing panels at the recommended 35-degree angle naturally helps snow slide off more easily. Additionally, leaving adequate spacing between panel rows prevents snow accumulation from creating shadows on lower panels. Choosing high-quality inverters with good performance in varying temperature conditions also helps maintain efficiency throughout the year's temperature swings typical of this continental Mediterranean climate zone.

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 Calatayud

Seasonal solar PV output for Latitude: 41.315, Longitude: -1.645 (Calatayud, 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 Calatayud, Spain

To maximize your solar PV system's energy output in Calatayud, Spain (Lat/Long 41.315, -1.645) 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 Calatayud, 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 Calatayud, 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 Calatayud, 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 Calatayud, 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 Calatayud, Spain

Topography Around Calatayud

Calatayud sits in the Jalón River valley within the province of Zaragoza in the autonomous community of Aragón, northeastern Spain. The city is positioned at approximately 530 meters above sea level in a strategic location where several valleys converge. The surrounding landscape is characterized by gently rolling hills and plateaus that are typical of the central Ebro River basin region.

The terrain around Calatayud features a mix of agricultural plains and low-lying hills, with elevations gradually rising from the river valley floor toward the surrounding uplands. To the north and south, the landscape transitions into higher ground, with the Sistema Ibérico mountain range visible in the distance to the south and southwest. The immediate vicinity consists primarily of sedimentary formations that have created relatively stable, well-drained soils across much of the area.

The Jalón River and its tributaries have carved broad, shallow valleys through this landscape over millennia, creating expanses of relatively flat to gently sloping terrain. These river terraces and adjacent plains form much of the cultivated land around the city, with traditional crops including cereals, vineyards, and olive groves taking advantage of the Mediterranean continental climate and fertile alluvial soils.

Optimal Areas for Large-Scale Solar Development

The most promising locations for large-scale solar photovoltaic installations around Calatayud would be the elevated plateaus and gentle slopes that extend to the east and southeast of the city. These areas offer several key advantages including relatively flat terrain that minimizes grading costs, good drainage to prevent water accumulation around equipment, and sufficient elevation to avoid potential flooding from the Jalón River system.

The agricultural plains extending toward the northeast also present excellent opportunities for solar development. These areas feature minimal topographical variation, which reduces installation complexity and ensures consistent panel orientation across large arrays. The stable geological conditions in these sedimentary landscapes provide solid foundations for mounting systems while the open nature of the terrain minimizes shading concerns.

Areas to the west and northwest of Calatayud, particularly those on the river terraces above the main valley floor, represent another category of suitable locations. These slightly elevated positions offer protection from seasonal flooding while maintaining the relatively level topography that makes large-scale solar installations economically viable. The transition zones between the valley floor and the surrounding hills often provide optimal combinations of accessible terrain and favorable microclimatic conditions.

The rolling uplands that extend southward from the city, while featuring more varied topography, contain numerous suitable sites on south-facing slopes and ridge tops. These locations can be particularly attractive for solar development as they naturally orient toward the sun while offering excellent drainage and minimal vegetation interference. However, careful site selection would be necessary to identify areas with sufficient contiguous flat or gently sloping terrain to accommodate large arrays efficiently.

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.