Solar PV Analysis of Galway, Ireland
Located in the Northern Temperate Zone, Galway, Connacht, Ireland (coordinates 53.2689 latitude and -9.0533 longitude) is a suitable location for solar photovoltaic (PV) installations due to its seasonal sunlight variation. In summer, each installed kilowatt of solar power has the potential to generate an average of 4.95 kWh per day, making it the most productive season for solar energy generation in this region.
In contrast, spring yields slightly lower results with an average daily production of 4.35 kWh per kW installed capacity. The output drops significantly during autumn and winter seasons due to shorter daylight hours and less intense sunlight; generating averages of 1.92 kWh and 0.96 kWh respectively per day for each kW installed.
The optimal tilt angle for fixed panel installations in Galway is approximately 45 degrees facing southwards which maximizes exposure to sunlight across all seasons.
However, certain local factors may impede maximum productivity from a solar PV system in this location. Weather conditions such as strong winds could potentially damage panels or reduce their efficiency by causing surface abrasion or misalignment from their optimal position towards the sun's rays.
Additionally, Galway's high rainfall levels can also impact performance by reducing incoming sunlight on cloudy days or creating a layer of grime on the panel surfaces that impedes light absorption over time if not cleaned regularly.
To counter these challenges and ensure greater energy production from your installation despite these environmental factors; robust mounting systems resistant to wind loads should be used during installation along with regular maintenance involving cleaning panels after heavy rains or storms can help maintain optimum performance levels year-round.
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 Galway
Seasonal solar PV output for Latitude: 53.2689, Longitude: -9.0533 (Galway, 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 45° South in Galway, Ireland
To maximize your solar PV system's energy output in Galway, Ireland (Lat/Long 53.2689, -9.0533) throughout the year, you should tilt your panels at an angle of 45° 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 Galway, 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 Galway, Ireland. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 45° 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 | 66° 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 Galway, 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 Galway, 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 Galway, Ireland
The topography around Galway is relatively flat, with most of the terrain being low-lying plains. The highest point in the area is Knockma Hill, which stands at 717 feet (219 meters). There are some higher hills to the north and east of Galway, but they are not close enough to have a significant impact on solar PV potential.
The areas most suited to large scale solar PV near Galway would be those that are flat and exposed to direct sunlight for long periods of time. This includes open fields and agricultural land located south and west of the city. These areas receive ample amounts of sunshine throughout the year, making them prime locations for solar power generation.
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: Monday 6th of November 2023
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.
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.
