Potters Bar, England, located in the United Kingdom, offers a moderate location for solar PV energy generation with distinct seasonal variations. This site in the Northern Temperate Zone experiences significant fluctuations in solar electricity production throughout the year.
Seasonal Solar Production
Solar panels at this location perform best during summer months, generating approximately 5.08kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season with 4.29kWh/day per kW installed. Production drops considerably during autumn to 2.25kWh/day, while winter shows the lowest output at just 1.03kWh/day per kW.
This seasonal pattern creates a nearly 5:1 ratio between summer and winter production, highlighting the significant variation throughout the year. The combined spring and summer seasons (roughly April through September) represent the prime solar generating period at this location, producing more than twice the electricity compared to autumn and winter months.
Optimal Panel Installation
For fixed panel installations in Potters Bar, England, the ideal tilt angle to maximize year-round production is 44 degrees facing South. This specific angle has been calculated to optimize annual energy capture given the location's latitude and seasonal sun positions.
Environmental Considerations
Several factors could potentially impact solar production at this location:
- Frequent cloud cover common to the UK climate can significantly reduce solar generation, particularly during winter months when production is already low
- Morning fog or mist, especially in autumn and winter, may delay daily production start times
- Potential for dust, pollen, and urban pollution to accumulate on panels, reducing efficiency
- Risk of partial shading from nearby trees, buildings or other structures
Preventative Measures
To maximize solar production despite these challenges, consider implementing these solutions:
- Regular panel cleaning, particularly after pollen season and during drier periods when dust accumulates
- Installing micro-inverters or power optimizers to minimize production losses from partial shading
- Careful site assessment to avoid shading from trees and structures, especially during winter when sun angles are lower
- Consider slight east-west orientation adjustments if morning fog is persistent, potentially sacrificing some total production for more consistent daily generation
While Potters Bar isn't ideal for year-round solar production due to its significant seasonal variations, a properly designed system with the correct orientation can still provide substantial renewable energy, particularly during the six-month period from spring through summer.
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 Potters Bar
Seasonal solar PV output for Latitude: 51.696, Longitude: -0.1735 (Potters Bar, 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 Potters Bar, United Kingdom
To maximize your solar PV system's energy output in Potters Bar, United Kingdom (Lat/Long 51.696, -0.1735) 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 Potters Bar, 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 Potters Bar, 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 Potters Bar, 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 Potters Bar, 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 Potters Bar, United Kingdom
Potters Bar is situated in the southern part of Hertfordshire, England, approximately 13 miles north of central London. The town occupies an area of gently undulating terrain, characteristic of the transition between London's urban sprawl and the more rural landscapes of Hertfordshire. The topography around Potters Bar features modest hills and shallow valleys, with elevations generally ranging between 80 and 120 meters above sea level. The town itself sits on a slight ridge, with land sloping down gently to the east toward the Lea Valley and to the west toward the Colne Valley. This elevated position relative to the immediate surroundings provides Potters Bar with pleasant views across the neighboring countryside, particularly to the north where the landscape becomes more rural and open.
Surrounding Landscape Features
To the north and northeast of Potters Bar, the land opens up into the gentle rolling countryside of Hertfordshire, with agricultural fields, scattered woodlands, and small settlements dotting the landscape. The terrain here is characterized by subtle undulations rather than dramatic relief. To the south and southeast, the landscape becomes increasingly urbanized as it transitions toward Greater London, though green spaces and corridors remain important features. The land generally slopes southward toward the Thames Valley. To the west, the terrain becomes slightly more pronounced with the beginning of the Chiltern Hills in the distance, though the immediate vicinity remains characterized by gentle slopes rather than steep hills.Potential Areas for Solar PV Development
Several factors make certain areas around Potters Bar potentially suitable for large-scale solar PV development: The gently sloping south-facing fields to the north and northeast of Potters Bar offer good potential for solar installations. These areas benefit from favorable orientation and minimal shadowing from topographical features. The agricultural land in this direction tends to be more open and less fragmented by woodland, which would reduce shading issues. The slightly elevated areas to the west of Potters Bar, approaching South Mimms, present another opportunity. These locations combine reasonable solar exposure with good accessibility via the nearby M25 and A1(M) road network, which could facilitate construction and maintenance of solar installations. Areas to the southeast, where the land slopes gently toward the Lea Valley, might also be suitable, particularly on land that isn't designated as Green Belt or otherwise protected. The relatively flat terrain in this direction would minimize installation complexity. It's worth noting that while the topography around Potters Bar is generally favorable for solar PV in terms of gradient and aspect, the region faces the typical challenges of the southeastern English climate. Additionally, land use considerations are significant, as much of the surrounding area falls within London's Green Belt, where development restrictions apply. The most promising locations would be those that combine south-facing gentle slopes, minimal woodland cover, good access to the electrical grid infrastructure, and appropriate current land use designations that might permit energy development.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: Thursday 5th 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.




