Relleu, Valencia, Spain, situated at latitude 38.5894 and longitude -0.3073, offers a promising location for solar energy generation throughout the year. This Mediterranean town experiences varying levels of solar potential across different seasons, making it an interesting case study for solar PV installations.

Seasonal Solar Performance

The solar energy output in Relleu follows a predictable pattern, with peak production during the summer months. In summer, each kilowatt of installed solar capacity can generate an impressive 7.53 kWh per day. Spring follows as the second most productive season, with 5.68 kWh daily output per kW installed. Autumn sees a moderate decline to 4.04 kWh/day, while winter experiences the lowest production at 2.82 kWh/day per kW installed.

Optimal Panel Orientation

For fixed solar panel installations in Relleu, Valencia, the ideal tilt angle to maximize year-round energy production is 33 degrees facing south. This angle takes into account the town's latitude and the sun's position throughout the year, ensuring optimal exposure to sunlight across all seasons.

Environmental Considerations

While Relleu generally offers favorable conditions for solar energy production, there are a few environmental factors to consider. The region can experience occasional dust storms, which may temporarily reduce panel efficiency. To mitigate this issue, regular cleaning and maintenance of solar panels is crucial. Additionally, installing panels with anti-soiling coatings can help maintain performance during dusty periods.

Another factor to consider is the potential for high temperatures during summer months, which can slightly decrease solar panel efficiency. Ensuring proper ventilation behind the panels and using heat-resistant components can help maintain optimal performance even on the hottest days.

Conclusion

Overall, Relleu presents a highly suitable location for solar PV installations. With its Mediterranean climate and abundant sunshine, particularly during spring and summer, the town offers excellent potential for solar energy generation. By addressing minor environmental challenges through proper installation techniques and maintenance, solar power systems in Relleu can provide reliable and efficient renewable energy 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 Relleu

Seasonal solar PV output for Latitude: 38.5894, Longitude: -0.3073 (Relleu, 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 Relleu, Spain

To maximize your solar PV system's energy output in Relleu, Spain (Lat/Long 38.5894, -0.3073) 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 Relleu, 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 Relleu, 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	53° 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 Relleu, 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 Relleu, 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 Relleu, Spain

The landscape surrounding Relleu, a small town in the Alicante province of Spain, is characterized by its rugged and mountainous terrain. Situated in the Marina Baixa comarca, Relleu is nestled within the foothills of the Aitana mountain range, which dominates the skyline to the northwest. The topography of this area is marked by steep slopes, rocky outcrops, and deep valleys carved by centuries of erosion. To the east and south of Relleu, the terrain gradually becomes less severe, transitioning into gentler hills and eventually flattening out as it approaches the Mediterranean coast, which lies about 20 kilometers away. The area is crisscrossed by numerous dry riverbeds, known locally as "barrancos," which fill with water during heavy rains but remain dry for much of the year. The vegetation in this region is typically Mediterranean, with pine forests, olive groves, and almond orchards dotting the landscape. In the more arid areas, hardy shrubs and grasses dominate, adapting to the challenging conditions of the rocky soil and limited rainfall.

Potential for Large-Scale Solar PV

When considering areas nearby that would be most suited to large-scale solar photovoltaic (PV) installations, several factors come into play. The ideal locations for solar farms are typically flat or gently sloping areas with good sun exposure and minimal shading from surrounding topography. Given the mountainous nature of the immediate vicinity around Relleu, the most suitable areas for large-scale solar PV would likely be found to the east and southeast of the town, where the terrain becomes less steep and more open. The flatter areas closer to the coast, particularly in the direction of Villajoyosa and Benidorm, could offer more expansive spaces for solar installations. These coastal plains and gentle hillsides not only provide the necessary space for large arrays of solar panels but also benefit from the region's abundant sunshine. The Mediterranean climate of this area, characterized by hot, dry summers and mild winters, is highly favorable for solar energy production. However, it's important to note that any large-scale solar project would need to carefully consider environmental impacts, land use regulations, and the preservation of agricultural areas. The region's reliance on tourism and agriculture means that balancing renewable energy development with other land uses would be crucial. In conclusion, while the immediate surroundings of Relleu may be too mountainous for extensive solar farms, the transitional areas between the mountains and the coast offer promising potential for large-scale solar PV development, combining favorable topography with excellent solar resources.

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.