Palmela, Setúbal, Portugal, situated at coordinates 38.5674, -8.9061, offers a promising location for solar energy generation throughout the year. Located in the Northern Temperate Zone, this region experiences distinct seasonal variations in solar energy production.

Seasonal Solar Performance

Solar panels in Palmela demonstrate peak performance during the summer months, generating an impressive 8.19 kWh per day for each kilowatt of installed capacity. Spring follows closely, with a daily output of 6.33 kWh/kW. Autumn sees a moderate decline to 4.54 kWh/day, while winter experiences the lowest production at 2.59 kWh/day per kW installed.

The substantial difference between summer and winter production highlights the region's seasonal variability. However, even during the least productive winter months, Palmela still maintains a respectable solar energy output.

Optimal Panel Installation

To maximize year-round solar energy production in Palmela, Setúbal, fixed solar panels should be tilted at a 33-degree angle facing south. This optimal angle has been calculated considering the location's latitude and the Earth's elliptical orbit, ensuring the best possible exposure to sunlight throughout the year.

Ideal Generation Periods

The most favorable period for solar energy generation in Palmela spans from late spring through early autumn. During these months, longer daylight hours and higher sun angles contribute to peak solar panel efficiency. While production decreases in winter, the region's relatively mild climate still allows for consistent energy generation year-round.

Environmental Considerations

Palmela's location doesn't present significant environmental or weather-related obstacles to solar energy production. However, occasional dust storms from the Sahara Desert can impact panel efficiency. To mitigate this:

• Install self-cleaning panels or implement regular cleaning schedules
• Use anti-soiling coatings on panel surfaces

Additionally, while infrequent, hailstorms can potentially damage solar panels. To address this risk, consider installing hail-resistant panels or protective covers during severe weather events.

Overall, Palmela's climate and geographical position make it an excellent location for solar energy production, with minimal environmental challenges that can be effectively managed through proper installation and maintenance practices.

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 Palmela

Seasonal solar PV output for Latitude: 38.5674, Longitude: -8.9061 (Palmela, 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 33° South in Palmela, Portugal

To maximize your solar PV system's energy output in Palmela, Portugal (Lat/Long 38.5674, -8.9061) 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 Palmela, 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 Palmela, Portugal. 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 Palmela, 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 Palmela, Portugal.

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 Palmela, Portugal

The topography around Palmela, Portugal, is characterized by a diverse landscape that combines gently rolling hills, fertile plains, and coastal influences. Situated on the Setúbal Peninsula, Palmela enjoys an elevated position atop a hill, offering panoramic views of the surrounding region. The terrain gradually descends from this vantage point, transitioning into a mix of undulating countryside and flatter areas as one moves towards the coast. To the north and east of Palmela, the landscape is dominated by the Arrábida Natural Park, a protected area known for its rugged limestone hills and cliffs that rise dramatically from the Atlantic Ocean. This mountainous region creates a striking contrast to the more gentle slopes found immediately around Palmela. Heading south and west from Palmela, the terrain becomes increasingly level, giving way to the expansive Sado Estuary and its surrounding wetlands. This area is characterized by low-lying plains and marshes, providing a stark difference to the hillier regions nearby.

Suitable Areas for Large-Scale Solar PV

When considering locations for large-scale solar photovoltaic (PV) installations near Palmela, several factors come into play, including topography, land availability, and solar irradiance. The most suitable areas for such projects would likely be found in the flatter regions to the south and southwest of Palmela. The plains stretching towards the Sado Estuary offer ideal conditions for solar PV farms. These areas benefit from relatively flat terrain, which simplifies installation and reduces costs associated with land preparation. Additionally, the open landscape in this direction experiences minimal shading from natural features, allowing for maximum sun exposure throughout the day. Another potentially suitable location would be the gently rolling hills to the east and southeast of Palmela. While not as flat as the coastal plains, these areas still provide ample space and favorable conditions for solar installations. The slight inclination of the land in certain spots could even be advantageous, allowing for optimal panel positioning to capture sunlight. It's worth noting that while the Arrábida Natural Park to the north offers some elevated areas with good sun exposure, its protected status and rugged terrain make it less suitable for large-scale solar projects. Similarly, areas closer to the coast may be less ideal due to potential salt spray and higher humidity levels, which could impact the longevity and efficiency of solar panels. Ultimately, the most appropriate sites for solar PV installations would need to balance optimal solar conditions with considerations for land use, environmental impact, and proximity to existing electrical infrastructure. Detailed site surveys and environmental assessments would be necessary to determine the best specific locations for such projects in the vicinity of Palmela.

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!

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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.