Plymouth, England, located in the United Kingdom, is situated in a region that experiences varying levels of solar energy potential throughout the year. This coastal city in the Northern Temperate Zone has distinct seasonal patterns that affect its suitability for solar PV energy generation.

Seasonal Solar Energy Production

The solar energy output in Plymouth fluctuates significantly across the seasons. Summer proves to be the most productive period, with an average daily output of 5.89 kWh per kW of installed solar capacity. Spring follows closely behind, generating 5.04 kWh/day. However, there's a substantial drop in production during autumn and winter, with outputs of 2.32 kWh/day and 1.15 kWh/day, respectively.

Optimal Times for Solar Generation

Based on these figures, the ideal times for solar energy generation in Plymouth are during the spring and summer months. From late March through September, longer daylight hours and generally clearer skies contribute to higher solar energy production. The peak period typically occurs around the summer solstice in June when daylight hours are at their maximum.

Panel Installation Considerations

For fixed panel installations in Plymouth, England, the optimal tilt angle to maximize year-round solar production is 42 degrees facing south. This angle helps to capture the most sunlight throughout the year, considering the city's latitude and seasonal sun positions.

Environmental and Weather Factors

Several factors can impact solar energy production in Plymouth: 1. Cloud cover: Plymouth's coastal location means it experiences frequent cloud cover, which can reduce solar panel efficiency. 2. Rainfall: The city receives significant rainfall throughout the year, which can affect panel performance. 3. Maritime environment: Proximity to the sea exposes solar installations to salt spray, potentially leading to corrosion over time.

Preventative Measures

To mitigate these challenges and ensure optimal energy production, consider the following measures: - Use high-quality, weather-resistant solar panels designed for maritime environments. - Implement regular cleaning schedules to remove salt deposits and other debris. - Install panels at the optimal angle to maximize exposure during clearer periods. - Consider microinverters or power optimizers to minimize the impact of partial shading from clouds. By taking these factors into account and implementing appropriate measures, solar PV systems in Plymouth can still be effective, particularly during the more productive spring and summer months.

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 Plymouth

Seasonal solar PV output for Latitude: 50.4381, Longitude: -4.083 (Plymouth, 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 42° South in Plymouth, United Kingdom

To maximize your solar PV system's energy output in Plymouth, United Kingdom (Lat/Long 50.4381, -4.083) throughout the year, you should tilt your panels at an angle of 42° 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 Plymouth, 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 Plymouth, United Kingdom. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 42° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
34° South in Summer	54° South in Autumn	64° South in Winter	42° 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 Plymouth, 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 Plymouth, 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 Plymouth, United Kingdom

Plymouth, located in the southwest of England, has a varied and interesting topography. The city itself is situated on the coast, with the Plymouth Sound to the south. The landscape around Plymouth is characterized by a mix of gently rolling hills, river valleys, and coastal features.

To the north and east of Plymouth, the terrain gradually rises into the southern edge of Dartmoor National Park. This area is known for its rugged moorland, with higher elevations and more dramatic landscapes. The transition from the coastal plain to the moorland creates a diverse topography with numerous hills and valleys.

To the west of Plymouth, across the River Tamar in Cornwall, the land is generally hilly with a mix of farmland and wooded areas. The coastline in this region is characterized by cliffs, coves, and small beaches.

For large-scale solar PV installations, the areas most suited would likely be found in the relatively flat or gently sloping farmlands to the east and northeast of Plymouth. These areas offer several advantages for solar energy production:

1. They tend to have fewer obstructions that could cast shadows on solar panels.
2. The land is often already cleared for agricultural use, minimizing the need for extensive site preparation.
3. These areas are typically far enough inland to avoid the corrosive effects of sea spray on solar equipment.
4. The slightly elevated position compared to the city itself may offer better exposure to sunlight throughout the day.

However, it's important to note that any large-scale solar PV project would need to carefully consider factors such as local planning regulations, environmental impact, and grid connection possibilities. The specific suitability of any site would require detailed assessment by solar energy experts and local authorities.

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.