Tredegar, United Kingdom, located in the Northern Temperate Zone at coordinates 51.7723, -3.241, presents a moderately suitable location for year-round solar PV energy generation, though with significant seasonal variations that are typical for this latitude.

Seasonal Solar Performance

The solar energy output at Tredegar varies dramatically throughout the year. Summer provides the strongest performance at 5.36kWh per day per kW of installed solar capacity, making it the optimal season for solar generation. Spring follows as the second-best period with 4.46kWh per day per kW, offering substantial energy production as daylight hours increase. Autumn sees a notable decline to 2.24kWh per day per kW, while winter presents the most challenging conditions with only 0.99kWh per day per kW. This winter figure represents less than one-fifth of the summer output, highlighting the significant seasonal challenge for solar installations in this location. For maximum year-round energy production, solar panels should be installed at a fixed tilt angle of 44 degrees facing south. This optimal angle is calculated by analyzing daily solar elevation angles throughout the year and weighting them according to solar irradiance data to maximize total annual output.

Local Factors Affecting Solar Production

Several environmental and weather factors in Tredegar can significantly impact solar energy generation:

• High rainfall and cloud cover: Wales experiences frequent overcast conditions and substantial precipitation, which can reduce solar irradiance and panel efficiency
• Fog and mist: The valley location and local topography can create persistent fog, particularly during autumn and winter months
• Industrial heritage pollution: As a former mining area, airborne particles and dust can accumulate on panels more rapidly
• Mountainous terrain: Surrounding hills may create shadows during low sun angles, particularly affecting winter performance

Preventative Measures for Optimal Performance

To maximize solar energy production despite these challenges, several installation strategies should be considered:

• Regular cleaning schedule: Implement monthly panel cleaning to remove dust, pollution residue, and organic matter that accumulates more readily in this environment
• Optimal positioning: Conduct a detailed shadow analysis to avoid shading from nearby hills, buildings, or vegetation, especially during winter months when the sun is lower
• Quality mounting systems: Use robust mounting hardware designed for high wind loads and frequent weather changes typical of Welsh valleys
• Drainage considerations: Ensure proper panel drainage and ventilation to prevent water pooling and maintain efficiency during frequent rain
• Performance monitoring: Install monitoring systems to quickly identify when weather-related efficiency losses occur

Despite these challenges, Tredegar can still provide reasonable solar energy returns, particularly during the extended spring and summer seasons when combined output significantly exceeds winter production limitations.

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 Tredegar

Seasonal solar PV output for Latitude: 51.7723, Longitude: -3.241 (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 Tredegar, United Kingdom

To maximize your solar PV system's energy output in Tredegar, United Kingdom (Lat/Long 51.7723, -3.241) 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 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 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 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 Tredegar, United Kingdom.

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 Tredegar, United Kingdom

Topographical Features Around Tredegar

Tredegar sits prominently in the South Wales Valleys, positioned at the head of the Sirhowy Valley in Blaenau Gwent. The town occupies an elevated position at approximately 300 meters above sea level, nestled within the dramatic landscape that characterizes the Welsh Valleys region. The surrounding terrain is dominated by steep-sided valleys carved by ancient glacial action and subsequent river erosion, creating a distinctive topography of ridges and hollows that defines much of this part of Wales. The immediate area around Tredegar features a complex arrangement of hills and valleys running predominantly north-south. To the west, the landscape rises toward the Brecon Beacons National Park, with moorland and upland areas extending across rolling hills. The eastern boundaries are marked by similar elevated terrain, while the Sirhowy Valley provides a natural corridor southward toward Newport and the coastal plain.

Valley Characteristics and Slopes

The valleys surrounding Tredegar typically feature steep gradients on their sides, often exceeding 20-30 degrees in many locations. These slopes are frequently covered with a mixture of grassland, scattered woodland, and areas of former industrial activity. The valley floors tend to be relatively narrow, following the natural watercourses that carved these features over millennia. Many hillsides display evidence of past coal mining activities, including spoil tips and former colliery sites that have been reclaimed and revegetated. These areas often present varied microtopography with artificial embankments, leveled platforms, and restored slopes that create interesting opportunities for development while respecting the industrial heritage of the region.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for substantial solar photovoltaic installations around Tredegar would be found on the gentler slopes and plateau areas that occur on the higher ground between valleys. The moorland areas to the north and west of the town offer extensive tracts of relatively flat or gently undulating terrain that would be ideal for large solar arrays. These elevated positions benefit from reduced shading and excellent exposure to prevailing weather patterns. Former industrial sites, particularly reclaimed colliery areas and spoil tips that have been engineered to stable gradients, present excellent opportunities for solar development. Many of these locations feature prepared ground with existing access infrastructure and are often situated on south-facing slopes that would optimize solar collection throughout the day. The plateau areas extending toward the Brecon Beacons, while maintaining reasonable accessibility from Tredegar, offer some of the most promising terrain for extensive solar installations. These locations combine favorable topography with sufficient space for large-scale arrays while being positioned away from residential areas and sensitive valley-bottom environments.

Access and Infrastructure Considerations

The A470 and A4048 roads provide primary access routes through the area, connecting to the broader Welsh road network. Many potential solar sites would benefit from existing farm tracks and former industrial access roads that could be upgraded to support construction and maintenance activities. The legacy of heavy industry in the region means that much of the supporting infrastructure, including electrical grid connections, already exists in proximity to many suitable development sites. The combination of favorable topography, existing infrastructure, and available land makes the area around Tredegar particularly well-suited to accommodating significant solar energy developments that could contribute substantially to regional renewable energy generation.

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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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.