New Tredegar in the United Kingdom offers varying potential for solar PV energy generation throughout the year. Located in the Northern Temperate Zone, this specific location experiences significant seasonal fluctuations in solar energy production that potential solar adopters should consider.
Seasonal Solar Production
The solar energy output at New Tredegar shows marked seasonal variation. During summer, each kilowatt of installed solar capacity generates a respectable 5.36kWh per day. Spring follows as the second most productive season with 4.46kWh daily per installed kilowatt. Production drops considerably in autumn to 2.24kWh daily, while winter sees the lowest output at just 0.99kWh per day per kilowatt of installed capacity.
This pattern makes summer and spring the ideal times for solar energy generation in New Tredegar. The substantial difference between summer and winter production (over 5 times more energy in summer) highlights the seasonal nature of solar resources in this temperate location.
Optimal Panel Installation
For fixed panel installations in New Tredegar, the ideal angle to maximize year-round solar production is 44 degrees facing South. This specific tilt angle has been calculated to optimize annual energy harvest based on the location's latitude and seasonal solar patterns.
Environmental and Weather Considerations
Several factors may impact solar production in New Tredegar. The Welsh climate brings frequent cloud cover and rainfall, particularly in autumn and winter months, which explains the lower production figures during these seasons. Additionally, the area's valley location in the South Wales Valleys may create localized fog or mist that can temporarily reduce solar efficiency.
New Tredegar's location in a former coal mining region might also mean increased particulate matter in the air during certain weather conditions, potentially reducing panel efficiency. The relatively northern latitude means lower sun angles, particularly in winter, creating longer shadows that can affect panel performance.
Preventative Measures
To maximize solar production despite these challenges, several installation strategies can help:
- Install panels at the recommended 44-degree tilt to optimize year-round production
- Consider micro-inverters or power optimizers to minimize the impact of partial shading
- Implement regular cleaning schedules, especially after prolonged wet periods
- Use high-efficiency panels designed for diffuse light conditions
- Consider slight east-west orientation adjustments if morning fog or afternoon cloud patterns are predictable
While New Tredegar isn't an ideal location for solar production compared to sunnier regions, properly designed systems can still provide meaningful energy contribution, particularly from late spring through early autumn.
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 New Tredegar
Seasonal solar PV output for Latitude: 51.718, Longitude: -3.2406 (New Tredegar, 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 44° South in New Tredegar, United Kingdom
To maximize your solar PV system's energy output in New Tredegar, United Kingdom (Lat/Long 51.718, -3.2406) throughout the year, you should tilt your panels at an angle of 44° 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 New Tredegar, 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 New Tredegar, United Kingdom. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 44° 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 | 44° 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 New Tredegar, 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 New Tredegar, 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 New Tredegar, United Kingdom
The topography around New Tredegar in South Wales presents a distinctive landscape characterized by its position within the valleys of the South Wales Coalfield. This small town is nestled in the Rhymney Valley, one of several parallel valleys that run roughly north-south through this region of Wales. The terrain is markedly hilly, with New Tredegar itself sitting at an elevation of approximately 200-250 meters above sea level. The surrounding landscape features steep-sided valleys carved by glacial and fluvial processes, with significant elevation changes over relatively short distances. The valley floors are relatively narrow, while the ridges between valleys (known locally as "tops") rise to heights of 400-550 meters. These ridges often feature more exposed, open moorland landscapes compared to the more sheltered valley settlements.
Valley Configuration and Aspect
The Rhymney Valley, where New Tredegar is located, runs in a generally north-south direction, with the town positioned on the eastern slope. This orientation means that the eastern valley sides generally face west, while western valley sides face east. This aspect is significant when considering solar potential, as south-facing slopes receive more direct sunlight in the northern hemisphere. The valley sides around New Tredegar are relatively steep, often with gradients of 15-30 degrees or more in places. This steepness creates numerous areas of shadow, particularly during winter months when the sun is lower in the sky. The narrow valley floor contains the Rhymney River and associated infrastructure including roads and the former railway line.Surrounding Uplands
To the east of New Tredegar lies Mynydd Bedwellty, a significant upland area reaching heights of over 400 meters. To the west, beyond the immediate valley, are further upland areas forming part of the broader pattern of valleys and ridges characteristic of the South Wales Coalfield. These higher elevations generally feature more exposed conditions, with moorland vegetation and fewer trees than the more sheltered valley locations. The historical mining activity in the area has also impacted the topography, with various spoil heaps, reclaimed land, and former industrial sites creating a partially modified landscape in certain locations.Solar PV Potential Sites
When considering large-scale solar PV installations near New Tredegar, several topographical factors must be considered. The most suitable areas would generally be: The broader, more gently sloping south-facing valley sides would offer better potential for solar development than north-facing slopes. Areas on the western side of the Rhymney Valley (facing east) and the eastern sides of adjacent valleys (facing west) would be less optimal than south-facing locations. The upland plateaus and ridgetops surrounding the valleys potentially offer good solar exposure, particularly those areas with minimal slope or a southern aspect. These higher elevations receive less shadowing from surrounding terrain, though they may experience more cloud cover and challenging weather conditions. Reclaimed former industrial land and coal tips that have been properly remediated could provide suitable locations, particularly if they have favorable aspects and minimal shading. Some of these areas may already have grid connection infrastructure nearby due to their industrial past. The broader, flatter areas toward the southern end of the valleys, where they begin to open out toward the coastal plain, generally offer more extensive level sites with good solar potential compared to the narrower, steeper northern sections of the valleys. Areas to avoid would include the steepest north-facing slopes, heavily wooded areas, and locations where significant shadowing occurs from adjacent higher ground. The narrow valley bottoms also tend to experience more shadowing from the surrounding hills, making them less suitable for large-scale solar development. The most promising locations would likely be found on the more gently sloping south-facing valley sides and on the higher plateau areas where sufficient flat or gently sloping land exists with minimal shadowing from adjacent terrain features.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!
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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Friday 27th of June 2025
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.




