Solar Energy Potential in Pont-y-clun, Wales, UK
Pont-y-clun, Wales, located in the United Kingdom within the Northern Temperate Zone, presents varying potential for solar PV energy generation throughout the year. This location experiences significant seasonal fluctuations in solar energy production that are typical of areas at higher latitudes. The solar energy output at this location shows a clear seasonal pattern. During summer months, solar panels can generate approximately 5.36 kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season, yielding about 4.48 kWh daily per kilowatt installed. Production drops considerably in autumn to 2.25 kWh/day, while winter represents the lowest production period with only 1.01 kWh/day per kilowatt of installed capacity.Seasonal Variations and Optimal Times
The nearly five-fold difference between summer and winter production highlights the seasonal nature of solar generation at this location. The most favorable period for solar energy production spans from late spring through early autumn (approximately May through September), when longer days and higher sun angles maximize energy capture. For fixed panel installations in Pont-y-clun, Wales, the ideal angle to maximize year-round energy production is 43 degrees tilted toward the South. This specific angle has been calculated to optimize annual energy capture by accounting for the location's latitude and the seasonal variations in solar elevation.Local Challenges and Mitigation Strategies
Several environmental factors may impact solar production in Pont-y-clun:- Cloud cover and rainfall: The Welsh climate is characterized by frequent cloud cover and precipitation, which can significantly reduce solar irradiance reaching panels. Installing high-efficiency panels designed for diffuse light conditions can help mitigate these effects.
- Morning fog and mist: Common in this region, especially in valleys and during autumn and winter months. Positioning panels at higher elevations where possible can reduce exposure to ground-level fog.
- Potential for airborne pollution: Being near urban areas may lead to dust and particulate accumulation on panels. Regular cleaning maintenance is advisable to maintain optimal efficiency.
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 911 locations across United Kingdom. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in United Kingdom by location
Solar output per kW of installed solar PV by season in Pont-y-clun
Seasonal solar PV output for Latitude: 51.5188, Longitude: -3.3909 (Pont-y-clun, United Kingdom), 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 43° South in Pont-y-clun, United Kingdom
To maximize your solar PV system's energy output in Pont-y-clun, United Kingdom (Lat/Long 51.5188, -3.3909) throughout the year, you should tilt your panels at an angle of 43° 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 Pont-y-clun, United Kingdom
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 Pont-y-clun, United Kingdom. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 43° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 35° South in Summer | 55° South in Autumn | 65° South in Winter | 43° 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 Pont-y-clun, United Kingdom
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 Pont-y-clun, United Kingdom.
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 Pont-y-clun, United Kingdom
Pont-y-clun (also known as Pontyclun) is situated in South Wales, approximately 12 miles northwest of Cardiff. The topography of this area is characterized by its position in a valley setting with varied terrain features that influence its landscape character.
Valley Setting
Pont-y-clun lies within the lower reaches of the Ely Valley, with the River Ely flowing through the settlement. The area sits at an elevation of approximately 30-40 meters above sea level in the valley bottom. This valley formation is part of the broader South Wales Valleys system, created through glacial and river erosion processes over geological time. The valley orientation runs roughly east-west in this section, with the land rising both to the north and south of the settlement. This positioning between higher ground creates a relatively sheltered microclimate compared to more exposed upland areas.Surrounding Terrain
To the north of Pont-y-clun, the land rises gradually toward Llantrisant, reaching elevations of around 175 meters. These northern slopes feature a mix of woodland areas and open fields, with some steeper sections. The southern side of the valley also rises, though somewhat more gently in places, toward Groesfaen and beyond. This southern aspect receives better solar exposure throughout the year due to its northward-facing orientation. The broader regional context includes the higher Rhondda Valleys to the north and northwest, while to the south lies the more gently undulating Vale of Glamorgan, eventually meeting the Bristol Channel coastline approximately 10-12 kilometers away.Potential Areas for Solar PV Development
When considering locations suitable for large-scale solar photovoltaic (PV) installations near Pont-y-clun, several topographical factors become important: The south-facing slopes to the north of the settlement offer good potential for solar PV deployment. These areas benefit from favorable solar aspect throughout the year. Particularly promising are the more gently sloping fields between Pont-y-clun and Llantrisant, where gradients are moderate enough for installation while maintaining good solar exposure. The flatter areas of the valley floor, particularly to the east and west of Pont-y-clun where the valley widens, present opportunities for larger contiguous installations. These areas benefit from reasonable solar exposure without the complications of steep terrain for construction and maintenance. The more elevated plateau areas toward Groesfaen to the south, where the land levels out after rising from the valley, combine good exposure with practical installation conditions. These higher elevation sites typically experience less valley fog and shadow effects that can reduce solar efficiency. Less suitable areas include the steeper north-facing slopes to the south of Pont-y-clun, heavily wooded sections where clearing would be environmentally problematic, and the most densely developed residential and industrial zones immediately surrounding the settlement. The moderate climate of this region, despite being in Wales which has a reputation for cloudiness, still provides sufficient solar radiation for viable PV projects, particularly on well-oriented sites with unobstructed southern exposure.United Kingdom solar PV Stats as a country
United Kingdom ranks 14th in the world for cumulative solar PV capacity, with 13,689 total MW's of solar PV installed. This means that 4.00% of United Kingdom's total energy as a country comes from solar PV (that's 20th in the world). Each year United Kingdom is generating 203 Watts from solar PV per capita (United Kingdom ranks 25th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in United Kingdom?
Yes, there are several incentives for businesses wanting to install solar energy in the United Kingdom. The UK government offers a Feed-in Tariff (FiT) scheme which pays businesses for every unit of electricity they generate from their solar panels. Additionally, businesses may be eligible for tax reliefs such as Enhanced Capital Allowances and Renewable Heat Incentives. Finally, some local authorities offer grants or other financial support to help businesses with the cost of installing solar energy systems.
Do you have more up to date information than this on incentives towards solar PV projects in United Kingdom? Please reach out to us and help us keep this information current. Thanks!
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Saturday 7th of June 2025
Last Updated: Monday 21st of July 2025
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.




