Roscrea, Munster, Ireland presents a moderately challenging location for year-round solar PV energy generation, with significant seasonal variations typical of its Northern Temperate Zone climate.

Seasonal Solar Performance

The solar energy output at Roscrea varies dramatically throughout the year. Summer months deliver the strongest performance at 5.31 kWh per day per kW of installed solar capacity, making this the prime season for solar generation. Spring follows as the second-best period with 4.34 kWh per day per kW, offering nearly comparable output to summer months. Autumn sees a notable decline in solar production, dropping to 2.04 kWh per day per kW of installed capacity. Winter presents the most challenging conditions, with output falling to just 0.98 kWh per day per kW - less than one-fifth of summer production levels. For optimal year-round energy capture at this location, solar panels should be installed at a fixed angle of 45 degrees facing south. This angle maximizes total annual production by accounting for the sun's varying position throughout the seasons and the weighted solar potential across the entire year.

Local Factors Affecting Solar Production

Several environmental and weather factors at Roscrea can significantly impact solar panel performance:

• Frequent cloud cover and rainfall: Ireland's maritime climate brings regular overcast conditions that reduce solar irradiance
• High humidity levels: Can cause moisture-related efficiency losses and potential corrosion issues
• Strong Atlantic winds: May cause debris accumulation and require robust mounting systems
• Salt air exposure: Being relatively close to coastal areas, salt corrosion can affect panel frames and connections

Preventative Installation Measures

To maximize solar energy production despite these challenges, several installation strategies prove beneficial:

• Enhanced drainage systems: Install panels with adequate gaps and drainage channels to prevent water pooling
• Corrosion-resistant materials: Use marine-grade aluminum frames and stainless steel mounting hardware
• Regular maintenance scheduling: Implement quarterly cleaning and inspection routines to remove debris and check for weather damage
• Wind-resistant mounting: Employ reinforced mounting systems designed for high wind loads
• Anti-reflective coatings: Choose panels with specialized coatings that perform better in diffused light conditions

While Roscrea's location presents certain challenges for solar energy generation, proper installation techniques and regular maintenance can help optimize performance throughout the year, with summer and spring months providing the most productive periods for solar energy capture.

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 Roscrea

Seasonal solar PV output for Latitude: 52.9511, Longitude: -7.8017 (Roscrea, 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 Roscrea, Ireland

To maximize your solar PV system's energy output in Roscrea, Ireland (Lat/Long 52.9511, -7.8017) 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 Roscrea, 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 Roscrea, 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
36° South in Summer	56° 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 Roscrea, 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 Roscrea, Ireland.

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 Roscrea, Ireland

Topography Around Roscrea

Roscrea sits in the heart of Ireland's midlands, positioned on relatively flat terrain that characterizes much of County Tipperary's northern reaches. The town itself lies at a modest elevation, surrounded by gently rolling countryside that transitions gradually between low hills and expansive plains. This landscape represents typical Irish midland topography, where dramatic elevation changes are rare and the terrain generally slopes gently across broad valleys.

The immediate area around Roscrea features a mix of agricultural land, with fields divided by traditional stone walls and hedgerows creating the characteristic patchwork pattern of rural Ireland. Small streams and tributaries wind through the landscape, creating shallow valleys that add subtle variation to an otherwise relatively uniform elevation profile. The Slieve Bloom Mountains rise to the east, providing a distant backdrop but not significantly affecting the local terrain around the town itself.

To the west and south, the land opens into broader plains that extend toward the Shannon River valley system. These areas maintain consistent, gentle gradients with minimal obstacles to development. The soil composition across the region is primarily agricultural, with good drainage characteristics in many locations due to the underlying limestone geology that defines much of this part of Ireland.

Optimal Areas for Large-Scale Solar Development

The best locations for substantial solar installations around Roscrea would be found in the flatter agricultural areas extending westward and southward from the town. These zones offer several advantages including consistent, unobstructed terrain that would minimize grading and site preparation costs. The gentle topography in these directions provides natural drainage while avoiding the complications that steeper slopes might introduce for large-scale construction projects.

Areas to the southwest of Roscrea present particularly favorable conditions, where the landscape opens into broader fields with fewer natural obstacles. The terrain here maintains consistent elevation without significant undulations, making it ideal for the systematic layout of solar arrays. Access to existing road networks in these agricultural zones would facilitate construction and ongoing maintenance operations.

The eastern approaches toward the Slieve Bloom foothills would be less suitable due to increasing elevation changes and more varied terrain. Similarly, areas immediately north of the town, while relatively flat, tend to have more fragmented field systems and established settlements that could complicate large-scale development. The optimal zones remain those flat to gently sloping agricultural lands that extend westward into the broader midland plains, where consistent elevation, good access, and minimal natural obstacles combine to create ideal conditions for substantial solar installations.

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!

Citation Guide

Article Details for Citation

Tell Us About Your Work

We love seeing how our research helps others! If you've cited this article in your work, we'd be delighted to hear about it. Drop us a line via our Contact Us page or on X, to share where you've used our information - we may feature a link to your work on our site. This helps create a network of valuable resources for others in the solar energy community and helps us understand how our research is contributing to the field. Plus, we occasionally highlight exceptional works that reference our research on our social media channels.

Feeling generous?

Share this with your friends!

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.