Alcoy, Valencia, Spain, located in the Northern Temperate Zone at coordinates 38.7023, -0.4743, presents a moderately favorable location for year-round solar 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 typical Mediterranean patterns with strong summer performance and reduced winter generation. Summer delivers the highest energy production at 7.53 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 5.68 kWh per day per kW, offering substantial energy production during the warmer months. Autumn sees a notable decline to 4.05 kWh per day per kW, while winter presents the most challenging period with only 2.84 kWh per day per kW of installed capacity. This winter reduction is typical for locations in the Northern Temperate Zone but represents a significant drop that affects year-round energy planning.

Optimal Installation Configuration

For fixed panel installations at this location, the ideal angle to tilt solar panels is 33 degrees facing south to maximize total year-round production. This angle is calculated by analyzing daily solar elevation angles throughout the year, determining optimal panel positioning for each day, and weighting these angles by the actual solar energy potential using comprehensive solar irradiance data that accounts for Earth's elliptical orbit.

Local Factors Affecting Solar Production

Several environmental and weather factors in the Alcoy region can impact solar energy production and should be addressed during installation planning. The mountainous terrain surrounding Alcoy can create shading issues, particularly during winter months when the sun is lower in the sky. Hills and nearby buildings may cast shadows that significantly reduce panel efficiency during parts of the day. When installing solar systems, careful site analysis is essential to identify potential shading sources and position panels to minimize these effects. Dust accumulation presents another challenge in this Mediterranean climate, especially during dry summer periods when solar production is at its peak. Dust, pollen, and debris can coat panels and reduce their efficiency by blocking sunlight. Regular cleaning schedules and consideration of panel tilt angles that promote natural rain washing can help maintain optimal performance.

Preventative Measures for Enhanced Performance

To maximize energy production despite these local challenges, several preventative measures should be implemented during installation:

• Conduct thorough shading analysis using specialized software to identify optimal panel placement
• Install panels with adequate spacing to prevent self-shading between rows
• Choose mounting systems that allow for easy cleaning access
• Consider automated cleaning systems for larger installations
• Implement monitoring systems to quickly identify performance issues

The Mediterranean climate can also bring occasional severe weather, including strong winds and heavy rainfall during autumn and winter storms. Using robust mounting systems rated for local wind loads and ensuring proper drainage around installations helps protect the investment and maintain consistent performance. Overall, while Alcoy offers good solar potential, particularly during the warmer months, careful planning and proper installation techniques are essential to overcome local environmental challenges and achieve optimal year-round energy production.

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 Alcoy

Seasonal solar PV output for Latitude: 38.7023, Longitude: -0.4743 (Alcoy, 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 33° South in Alcoy, Spain

To maximize your solar PV system's energy output in Alcoy, Spain (Lat/Long 38.7023, -0.4743) throughout the year, you should tilt your panels at an angle of 33° 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 Alcoy, 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 Alcoy, Spain. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 33° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
22° South in Summer	43° South in Autumn	54° South in Winter	31° 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 Alcoy, 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 Alcoy, 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 Alcoy, Spain

Topographical Features of Alcoy

Alcoy sits nestled in the mountainous interior of Alicante province in the Valencia region of Spain, positioned at an elevation of approximately 560 meters above sea level. The city occupies a dramatic location where three rivers converge - the Molinar, Riquer, and Barchell - creating deep gorges and ravines that cut through the urban landscape. This unique setting has earned Alcoy the nickname "the city of bridges" due to the numerous structures spanning these natural chasms. The surrounding terrain is characterized by the rugged limestone peaks and ridges of the Pre-Baetic mountain ranges, which form part of the larger Baetic System extending across southeastern Spain. These mountains create a complex landscape of steep-sided valleys, rocky outcrops, and undulating plateaus. The highest peaks in the immediate vicinity reach elevations exceeding 1,400 meters, including the prominent Sierra de Mariola to the north and the Sierra del Menejador to the southwest. The geology consists primarily of Mesozoic limestone formations, which have been carved by millennia of erosion to create the characteristic Mediterranean karst landscape. This has resulted in numerous caves, sinkholes, and underground drainage systems throughout the region. The limestone bedrock also contributes to the area's distinctive white and grey cliff faces that are visible from many vantage points around Alcoy.

Climate and Solar Potential Considerations

The mountainous topography significantly influences the local climate patterns around Alcoy. The elevation and surrounding peaks create a continental Mediterranean climate with cooler temperatures than coastal areas at the same latitude. Winter temperatures can drop below freezing, while summers remain warm but not excessively hot due to the altitude. The complex terrain creates varied microclimates throughout the region, with south-facing slopes receiving considerably more solar radiation than their north-facing counterparts. The mountain ranges also influence cloud formation and precipitation patterns, with orographic effects causing increased rainfall on windward slopes and rain shadows on leeward sides.

Optimal Areas for Large-Scale Solar Development

The most promising locations for large-scale solar photovoltaic installations lie on the elevated plateaus and gentle slopes found between the major mountain ridges. These areas offer several advantages including relatively flat or moderately sloped terrain that minimizes construction challenges and reduces shading issues between panel arrays. The plateau areas southeast of Alcoy, extending toward the municipalities of Cocentaina and Muro de Alcoy, present particularly favorable conditions. These elevated plains sit at altitudes between 400 and 700 meters, providing excellent exposure to solar radiation while avoiding the steepest mountain slopes. The terrain here consists of rolling agricultural land with gentle gradients that would accommodate large solar installations without extensive grading or terracing. Another promising zone lies to the southwest of the city, where broader valley floors and terraced hillsides offer substantial flat areas. This region benefits from southern exposure and protection from northern winds provided by the surrounding mountain ranges. The existing agricultural terraces in many of these areas could potentially be adapted for solar panel installation with minimal landscape modification. The areas north of Alcoy toward the Sierra de Mariola also contain suitable sites, particularly on the southern-facing slopes and valley floors. These locations benefit from natural wind protection and good drainage, which are important factors for solar installation maintenance and longevity. The slightly higher elevation in these areas can actually be beneficial for photovoltaic efficiency due to cooler operating temperatures. Agricultural valleys between the mountain ranges, particularly those running east-west, offer extensive flat areas that could accommodate very large solar farms. These valley floors typically have good access to existing infrastructure including roads and electrical transmission lines, which reduces development costs and complexity. The limestone bedrock throughout the region provides excellent foundation conditions for solar mounting systems, requiring minimal deep excavation while offering stable, long-term support for large installations. This geological advantage, combined with the generally low seismic activity in the area, makes the region well-suited for substantial solar infrastructure investments.

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.