Solar PV Analysis of Westport, Ireland
Westport, Connacht, a charming town in County Mayo, Ireland, presents a mixed picture for year-round solar energy generation. Located at latitude 53.8002° N and longitude 9.5112° W, this Northern Temperate Zone location experiences significant seasonal variations in solar potential.
Seasonal Solar Performance
Summer stands out as the most productive season for solar energy in Westport, Connacht, with an impressive 4.95 kWh per day for each kilowatt of installed solar capacity. Spring follows closely behind, generating 4.35 kWh/day. However, the output drops considerably during autumn, producing only 1.92 kWh/day. Winter sees the lowest generation, with a mere 0.96 kWh/day, highlighting the challenges of solar energy production during the darker months.
Optimal Panel Placement
To maximize year-round solar energy production in Westport, Connacht, fixed solar panels should be tilted at a 46-degree angle facing south. This optimal angle takes into account the town's latitude and the Earth's elliptical orbit, ensuring the best possible exposure to sunlight throughout the year.
Environmental and Weather Considerations
Westport's coastal location on Ireland's western seaboard brings some challenges for solar energy production. The area is prone to frequent cloud cover and rainfall, which can significantly reduce solar panel efficiency. Additionally, the salt-laden air from the nearby Atlantic Ocean may accelerate corrosion of solar equipment if not properly protected.
To mitigate these issues, solar installations in Westport should incorporate corrosion-resistant materials and protective coatings. Regular cleaning and maintenance of panels are crucial to combat salt buildup and maximize efficiency. Investing in high-quality, weather-resistant solar panels designed for coastal environments can also help ensure better performance and longevity.
Conclusion
While Westport's location is not ideal for year-round solar energy production, it still offers significant potential during spring and summer months. With proper planning, optimal panel placement, and appropriate preventative measures, solar PV systems can be a viable renewable energy option for this picturesque Irish town.
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 104 locations across Ireland. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Ireland by location
Solar output per kW of installed solar PV by season in Westport
Seasonal solar PV output for Latitude: 53.8002, Longitude: -9.5112 (Westport, Ireland), 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 46° South in Westport, Ireland
To maximize your solar PV system's energy output in Westport, Ireland (Lat/Long 53.8002, -9.5112) throughout the year, you should tilt your panels at an angle of 46° 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 Westport, Ireland
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 Westport, Ireland. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 46° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 37° South in Summer | 57° South in Autumn | 67° South in Winter | 45° 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 Westport, Ireland
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 Westport, Ireland.
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 Westport, Ireland
The topography around Westport, Ireland is quite varied and picturesque. The town itself is situated on the southeast corner of Clew Bay, an inlet of the Atlantic Ocean on Ireland's west coast. The landscape in this area is characterized by a mix of coastal lowlands and rolling hills that gradually rise as you move inland.
To the south and east of Westport, the terrain becomes more mountainous, dominated by the Croagh Patrick mountain. This iconic peak, standing at 764 meters (2,507 feet) tall, is a prominent feature of the local landscape. The slopes of Croagh Patrick and the surrounding foothills create a rugged, undulating terrain that's typical of Ireland's western seaboard.
North of Westport, the land opens up into a series of drumlin hills - small, elongated mounds formed by glacial activity. These create a gently rolling landscape that extends towards the northern shores of Clew Bay. The coastline itself is highly indented, with numerous small islands dotting the bay.
When considering areas nearby that would be most suited to large-scale solar PV (photovoltaic) installations, there are a few factors to consider. Ideally, solar farms require relatively flat or gently sloping land with good exposure to sunlight. Given these criteria, the most suitable areas near Westport would likely be:
- The lowland areas to the north and northeast of Westport, where the drumlin landscape provides some flat or gently sloping terrain. These areas are less mountainous and could offer suitable sites for solar installations.
- Some of the more level areas in the valleys between the hills to the south and east of Westport. While care would need to be taken to avoid overshadowing from nearby hills, there may be pockets of land here that could be suitable.
- Coastal areas to the west of Westport, where the land is generally flatter. However, these would need to be carefully selected to avoid areas of environmental importance or those at risk of coastal flooding.
It's important to note that while these areas might be topographically suitable, other factors such as land use, environmental designations, grid connectivity, and local planning regulations would also need to be considered for any large-scale solar PV project. Additionally, Ireland's climate, with its frequent cloud cover, may present challenges for solar energy production, so thorough feasibility studies would be essential.
Ireland solar PV Stats as a country
Ireland ranks 83rd in the world for cumulative solar PV capacity, with 136 total MW's of solar PV installed. Each year Ireland is generating 27 Watts from solar PV per capita (Ireland ranks 61st in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Ireland?
Yes, there are a number of incentives available for businesses wanting to install solar energy in Ireland. The Sustainable Energy Authority of Ireland (SEAI) offers grants and other financial support for businesses that wish to install solar PV systems. Additionally, the government has introduced a Feed-in Tariff scheme which pays businesses for any excess electricity they generate from their solar panels. Finally, businesses may be eligible for tax relief on the cost of installing a solar system through the Accelerated Capital Allowance Scheme.
Do you have more up to date information than this on incentives towards solar PV projects in Ireland? Please reach out to us and help us keep this information current. Thanks!
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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Sunday 15th of September 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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