Carlisle, England, United Kingdom is not an ideal location for year-round solar PV energy generation, though it does offer reasonable production during the warmer months of the year.

Seasonal Solar Performance

The solar energy output at Carlisle varies dramatically throughout the year. Summer provides the best conditions with 5.19 kWh per day for each kilowatt of installed solar capacity. Spring also offers good production at 4.19 kWh per day per kW. However, performance drops significantly during autumn to just 1.80 kWh per day per kW, and winter presents challenging conditions with only 0.82 kWh per day per kW. This means that solar panels in Carlisle will generate more than six times as much electricity in summer compared to winter. The most productive period for solar generation runs from late spring through early autumn, with peak performance during the summer months.

Optimal Panel Installation

For a fixed panel installation at this location, the ideal angle to tilt panels is 46 degrees facing south to maximise total year-round production from solar PV. This angle has been calculated to optimise energy capture across all seasons by accounting for the sun's changing position throughout the year and weighting the angles based on solar irradiance data.

Local Factors Affecting Solar Production

Several environmental and weather factors in Carlisle can significantly impact solar energy production:

• Frequent cloud cover and overcast conditions, particularly during winter months
• High levels of rainfall throughout the year that can reduce solar irradiance
• Snow accumulation during winter that can block panels
• Strong winds that may affect panel stability and orientation
• Atmospheric moisture and fog that can reduce light transmission

Preventative Measures for Better Performance

To help ensure greater energy production despite these challenging conditions, several installation strategies can be employed:

• Install panels at the optimal 46-degree tilt to allow snow and rain to slide off more easily
• Ensure adequate spacing between panel rows to prevent shading and allow for maintenance access
• Use high-quality mounting systems designed to withstand strong winds and weather extremes
• Consider anti-reflective coatings on panels to maximise light capture during overcast conditions
• Install monitoring systems to quickly identify and address performance issues
• Plan for regular cleaning and maintenance, particularly after storms or heavy rainfall

While Carlisle's location in the Northern Temperate Zone presents challenges for consistent solar energy production, proper installation techniques and realistic expectations about seasonal variation can help maximise the system's effectiveness during the more productive months of the year.

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 Carlisle

Seasonal solar PV output for Latitude: 54.8706, Longitude: -2.946 (Carlisle, 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 46° South in Carlisle, United Kingdom

To maximize your solar PV system's energy output in Carlisle, United Kingdom (Lat/Long 54.8706, -2.946) throughout the year, you should tilt your panels at an angle of 46° 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 Carlisle, 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 Carlisle, United Kingdom. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 46° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
38° South in Summer	57° South in Autumn	68° South in Winter	47° 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 Carlisle, 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 Carlisle, 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 Carlisle, United Kingdom

Topography Around Carlisle

Carlisle sits in the northwestern corner of England, positioned within the Eden Valley in Cumbria. The city occupies relatively flat terrain at an elevation of approximately 26 meters above sea level, making it one of the lower-lying areas in this part of the country. The immediate surroundings consist of gently undulating farmland and river valleys, with the River Eden flowing northward through the city toward the Solway Firth.

To the east and southeast of Carlisle, the landscape begins to rise gradually toward the North Pennines Area of Outstanding Natural Beauty. This upland region features rolling hills, moorland, and fell country that becomes increasingly elevated as it extends toward the Yorkshire Dales. The terrain here is characterized by ancient geological formations, including limestone and sandstone outcrops that create a distinctive stepped landscape.

The western approach to Carlisle presents a contrasting topography, with the land sloping gently toward the Solway Firth and the Irish Sea. This coastal plain extends across the border into Scotland and features predominantly flat agricultural land intersected by numerous streams and drainage channels. The area has been shaped by centuries of tidal action and sediment deposition, creating fertile but sometimes waterlogged conditions.

Northward from Carlisle, the terrain remains relatively level as it approaches the Scottish border, though the landscape gradually transitions into the Southern Uplands. The famous Hadrian's Wall runs through this region, following the natural topographical features that the Romans utilized for defensive purposes. The wall's route demonstrates how the ancient builders took advantage of ridges and elevated ground to maximize visibility and strategic positioning.

Optimal Areas for Large-Scale Solar PV Development

The most promising locations for substantial solar photovoltaic installations around Carlisle lie primarily to the west and southwest of the city. These areas benefit from the relatively flat topography of the coastal plain, which minimizes grading requirements and reduces installation costs. The gentle slopes that do exist in this region typically face southward, providing favorable orientation for solar panels without the need for extensive ground preparation.

The agricultural land between Carlisle and the Solway Firth presents particularly suitable conditions for solar development. The terrain here consists of large, open fields with minimal tree cover and few topographical obstacles. The soil conditions, while excellent for farming, also provide stable foundations for solar mounting systems. Additionally, the area's proximity to existing electrical infrastructure around Carlisle makes grid connection more feasible and cost-effective.

Areas to the south and southeast of Carlisle, while offering some suitable sites, present more challenging conditions due to the gradually rising elevation toward the Pennines. However, south-facing slopes in this region could still accommodate solar installations, particularly on lower elevations where the gradient remains manageable. The key consideration in these areas is selecting sites that avoid the steeper inclines and rocky outcrops that characterize the higher fellside terrain.

The northern approaches toward Scotland offer mixed potential for solar development. While much of the land remains relatively flat, the presence of numerous water courses, areas of peat bog, and designated conservation areas may limit development opportunities. The most viable sites in this direction would likely be found on well-drained agricultural land that avoids environmentally sensitive areas and maintains good access to transportation networks.

When evaluating potential solar sites around Carlisle, developers should prioritize locations that combine favorable topography with practical considerations such as grid access, transportation links, and minimal environmental constraints. The western coastal plain consistently emerges as the most advantageous area, offering the optimal combination of suitable terrain, accessibility, and development potential for large-scale solar photovoltaic projects.

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

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.