Solar PV Analysis of Aveiro, Portugal
Aveiro, Portugal, situated at 40.6501° N, 8.6502° W, offers a promising location for solar PV energy generation throughout the year. This coastal city in the Northern Temperate Zone experiences varying levels of solar productivity across the seasons, with notable peaks and troughs.
Seasonal Solar Output
Summer stands out as the most productive season, with an impressive 7.47 kWh per day for each kilowatt of installed solar capacity. Spring follows closely, yielding 6.07 kWh/day. Autumn sees a significant drop to 4.09 kWh/day, while winter experiences the lowest output at 2.35 kWh/day.
The substantial difference between summer and winter outputs highlights the impact of seasonal variations on solar energy production in Aveiro. However, the region's relatively high spring and autumn yields suggest that solar PV systems can remain productive for a significant portion of the year.
Optimal Panel Positioning
To maximize year-round solar energy production in Aveiro, fixed solar panels should be tilted at a 35-degree angle facing south. This optimal angle takes into account the city's latitude and the sun's position throughout the year, ensuring the best possible exposure to sunlight across all seasons.
Environmental Considerations
While Aveiro's location is generally favorable for solar energy production, there are some environmental factors to consider. The city's coastal position may expose solar installations to salt spray, which can potentially corrode equipment over time. To mitigate this, installers should use corrosion-resistant materials and apply protective coatings to solar panels and mounting hardware.
Additionally, Aveiro experiences occasional fog, particularly in the mornings, which can temporarily reduce solar output. While this is not a major impediment, it's worth considering when estimating overall system performance. Regular cleaning of solar panels to remove any salt or dust buildup can help maintain optimal efficiency.
In conclusion, Aveiro's location offers good potential for solar PV energy generation, with strong summer and spring outputs compensating for lower winter production. By optimizing panel angles and addressing minor environmental challenges, solar installations in this Portuguese city can achieve reliable 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 179 locations across Portugal. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Portugal by location
Solar output per kW of installed solar PV by season in Aveiro
Seasonal solar PV output for Latitude: 40.6501, Longitude: -8.6502 (Aveiro, Portugal), 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 Aveiro, Portugal
To maximize your solar PV system's energy output in Aveiro, Portugal (Lat/Long 40.6501, -8.6502) 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 Aveiro, Portugal
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 Aveiro, Portugal. 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 | 33° 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 Aveiro, Portugal
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 Aveiro, Portugal.
Our calculation method
- Solar Position:
We determine the Sun's position on the Winter solstice using the location's latitude and solar declination. - Shadow Projection:
We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle. - 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 Aveiro, Portugal
The topography around Aveiro, Portugal is characterized by a relatively flat coastal plain. This area, known as the Beira Litoral region, is part of a larger geographic feature called the Portuguese Western Coast. The landscape is dominated by a wide, sandy coastline and a system of lagoons and estuaries, with the most prominent being the Ria de Aveiro lagoon complex.
Inland from the coast, the terrain gradually rises into gently rolling hills. These hills become more pronounced as you move eastward, eventually transitioning into the foothills of the Serra do Caramulo mountain range, which lies about 50 kilometers to the east of Aveiro. The elevation in the immediate vicinity of Aveiro rarely exceeds 50 meters above sea level, making it a predominantly low-lying area.
The region's waterways, including the Vouga River and its tributaries, have shaped the landscape over time, creating fertile alluvial plains and some marshy areas near the coast. These features contribute to the area's rich biodiversity and agricultural potential.
Regarding areas nearby that would be most suited to large-scale solar PV (photovoltaic) installations, several factors come into play. The ideal locations would combine flat or gently sloping terrain, good sun exposure, and minimal environmental impact. With these considerations in mind, the following areas near Aveiro show promise:
- The inland plains to the east and southeast of Aveiro: These areas offer relatively flat terrain and fewer obstacles to sunlight, making them potentially suitable for solar farms.
- Agricultural lands that are less productive or fallow: Some of the rural areas surrounding Aveiro might be appropriate, especially if they are not prime agricultural land.
- Brownfield sites or former industrial areas: If any exist in the region, these could be repurposed for solar energy production, combining land reclamation with renewable energy generation.
It's important to note that while the topography around Aveiro is generally favorable for solar PV, other factors such as local regulations, grid connectivity, and environmental assessments would need to be considered before establishing any large-scale solar installations. Additionally, care should be taken to avoid ecologically sensitive areas, particularly those associated with the Ria de Aveiro lagoon system and coastal habitats.
Portugal solar PV Stats as a country
Portugal ranks 32nd in the world for cumulative solar PV capacity, with 1,801 total MW's of solar PV installed. This means that 3.40% of Portugal's total energy as a country comes from solar PV (that's 23rd in the world). Each year Portugal is generating 174 Watts from solar PV per capita (Portugal ranks 29th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Portugal?
Yes, there are several incentives for businesses wanting to install solar energy in Portugal. The Portuguese government offers a range of financial incentives and tax breaks for businesses that invest in renewable energy sources such as solar power. These include grants, loans, and tax credits. Additionally, the government has set up a feed-in tariff system which guarantees a fixed price for electricity generated from renewable sources such as solar power. This helps to make investing in solar energy more attractive to businesses.
Do you have more up to date information than this on incentives towards solar PV projects in Portugal? Please reach out to us and help us keep this information current. Thanks!
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Friday 11th of October 2024
Last Updated: Monday 21st of July 2025
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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.
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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.
