Solar Energy Generation in Moita, Setúbal, Portugal

Moita, Setúbal, Portugal, located at coordinates 38.6576, -9.0333 in the Northern Temperate Zone, offers favorable conditions for solar energy production throughout the year. This coastal municipality near Lisbon experiences substantial seasonal variations in solar energy generation potential. The solar output in Moita demonstrates a clear seasonal pattern. Summer is exceptionally productive with 7.69kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season with 6.38kWh/day. Autumn provides moderate generation at 4.46kWh/day, while winter shows the lowest output at 2.60kWh/day per kilowatt installed. For fixed solar panel installations in Moita, Setúbal, the ideal angle to maximize year-round energy production is 33 degrees facing South. This carefully calculated tilt optimizes the annual solar harvest by accounting for the location's specific latitude and seasonal solar patterns.

Seasonal Considerations

The substantial difference between summer and winter production (nearly three times more energy in summer) indicates that Moita has pronounced seasonal variations. This pattern is typical for locations in the Northern Temperate Zone, where the sun's path varies significantly throughout the year. The strong spring performance suggests that March through May offer excellent solar generation potential, making this an ideal time for maintenance or system expansion before the peak summer period. The gradual decline in autumn provides a transition period where generation remains worthwhile before the winter minimum.

Potential Challenges and Solutions

Despite Moita's generally favorable solar conditions, several environmental factors could potentially impact solar production:

• Salt air exposure: Moita's proximity to the Tagus Estuary and Atlantic Ocean means salt-laden air could corrode solar equipment. Using marine-grade components and regular cleaning can mitigate this issue.
• Occasional coastal fog: Morning fog can temporarily reduce generation. Installing panels at the optimal 33-degree angle helps ensure water doesn't pool on panels and dissipates quickly.
• Dust and pollen: The region's dry summers can lead to dust accumulation, while spring brings pollen. Implementing automated cleaning systems or regular maintenance schedules can address this.
• Seasonal temperature variations: High summer temperatures can slightly reduce panel efficiency. Ensuring adequate airflow beneath panels during installation helps mitigate this effect.

Overall, Moita presents an excellent location for solar PV installations. The significant summer and spring production can compensate for reduced winter output, resulting in attractive annual generation figures. With proper installation at the recommended 33-degree South tilt and attention to potential environmental factors, solar energy systems in Moita can operate efficiently 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 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 Moita

Seasonal solar PV output for Latitude: 38.6576, Longitude: -9.0333 (Moita, 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 Moita, Portugal

To maximize your solar PV system's energy output in Moita, Portugal (Lat/Long 38.6576, -9.0333) 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 Moita, 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 Moita, 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 Moita, 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 Moita, 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 Moita, Portugal

Moita is a municipality situated on the Tagus River estuary, approximately 20 kilometers southeast of Lisbon, Portugal. The topography of this region is predominantly characterized by flat, lowland terrain with minimal elevation changes. The area sits on the southern banks of the Tagus River, forming part of the Setúbal Peninsula, with elevations typically ranging from sea level to only about 30 meters above sea level across most of the municipality. The landscape around Moita features a combination of urban development, agricultural land, and natural wetlands. The northern edge of Moita borders the Tagus River estuary, which includes salt marshes and mudflats that form part of the Tagus Estuary Natural Reserve. These wetland areas are relatively flat with numerous small water channels cutting through them.

Surrounding Terrain

Moving south and east from Moita, the terrain remains generally flat with slight undulations. The neighboring municipalities of Barreiro to the west and Montijo to the east share similar topographical characteristics. This flat peninsula contrasts with the more varied terrain found farther south in the Setúbal district, where the Serra da Arrábida mountains rise to over 500 meters. The geological composition of the area consists primarily of sedimentary deposits, including sand, clay, and limestone, which have accumulated over time from the Tagus River. This relatively young geological formation contributes to the flat character of the region.

Solar PV Potential Areas

The areas most suited for large-scale solar photovoltaic installations near Moita would be the inland plains to the south and southeast of the municipality. These locations offer several advantages: The flat terrain requires minimal grading or site preparation, reducing construction costs for solar installations. The open agricultural lands in the southern portions of Moita and extending into neighboring Palmela and Montijo provide expansive areas with minimal shading concerns from natural features or tall structures. The region south of Moita, particularly as one moves toward Palmela, offers slightly higher elevation and better drainage compared to the wetland areas near the river, making these locations more suitable for infrastructure development. These inland areas also tend to experience less fog than locations directly adjacent to the Tagus estuary, providing more consistent solar exposure.

Limitations and Considerations

While the topography is generally favorable, certain areas around Moita present challenges for solar development. The northern portions bordering the Tagus estuary include protected wetlands that form part of important ecological reserves. These areas would be unsuitable for development due to environmental protections and unstable ground conditions. Urban zones within Moita itself have limited available land for large-scale installations, though smaller commercial or residential solar projects could be feasible. The agricultural value of some lands might create competition between solar development and food production, a factor that would need consideration in planning. The flat terrain, while generally advantageous, can sometimes present drainage challenges during the rainy season, particularly in areas with clay soils that don't absorb water quickly. Site engineering would need to address potential seasonal flooding in some locations. Overall, the topography around Moita offers favorable conditions for solar PV development, with the inland plains to the south representing the most promising areas for large-scale installations due to their flat terrain, good drainage, and minimal competing land uses.

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.