Gammel Lejre, Zealand, Denmark, situated at 55.5835°N, 11.9774°E, presents a mixed picture for solar energy generation throughout the year. This location in the Northern Temperate Zone experiences significant seasonal variations in solar potential, which greatly impacts the efficiency of photovoltaic (PV) systems.

Seasonal Solar Performance

The solar energy output at Gammel Lejre fluctuates dramatically across the seasons. Summer stands out as the most productive period, with an impressive 5.56 kWh per day for each kilowatt of installed solar capacity. Spring follows as the second-best season, generating 4.36 kWh/day/kW. However, the output drops significantly in autumn to 1.88 kWh/day/kW, and plummets to a mere 0.79 kWh/day/kW during the winter months.

These figures highlight that the ideal times for solar energy generation in Gammel Lejre are primarily during the spring and summer seasons, roughly from April through September. During these months, longer daylight hours and higher sun angles contribute to increased solar panel efficiency.

Optimal Panel Installation

To maximize year-round solar production at this location, fixed solar panels should be tilted at an angle of 46 degrees facing south. This optimal angle takes into account the sun's position throughout the year, balancing the need for efficiency during both peak and off-peak seasons.

Environmental and Weather Factors

Several environmental and weather-related factors can potentially impede solar production in Gammel Lejre:

1. Cloud cover: Denmark's climate is characterized by frequent overcast conditions, particularly during autumn and winter, which can significantly reduce solar panel efficiency.
2. Short winter days: The high latitude results in very short days during winter, severely limiting the amount of sunlight available for energy production.

To mitigate these challenges, consider the following preventative measures:

• Use high-efficiency solar panels designed to perform well in low-light conditions.
• Implement a robust cleaning schedule to remove snow and debris, especially during winter months.
• Consider a solar tracking system to maximize energy capture, particularly during the limited daylight hours of winter.
• Integrate energy storage solutions to balance the seasonal variations in energy production.

While Gammel Lejre's location presents challenges for year-round solar energy production, careful planning and appropriate technology selection can still make solar PV a viable renewable energy option for this Danish community.

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 130 locations across Denmark. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Denmark by location

Solar output per kW of installed solar PV by season in Gammel Lejre

Seasonal solar PV output for Latitude: 55.5835, Longitude: 11.9774 (Gammel Lejre, Denmark), 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 Gammel Lejre, Denmark

To maximize your solar PV system's energy output in Gammel Lejre, Denmark (Lat/Long 55.5835, 11.9774) 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 Gammel Lejre, Denmark

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 Gammel Lejre, Denmark. 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
39° South in Summer	58° South in Autumn	68° South in Winter	48° 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 Gammel Lejre, Denmark

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 Gammel Lejre, Denmark.

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 Gammel Lejre, Denmark

The topography around Gammel Lejre, Denmark, is characterized by a gently rolling landscape typical of the Zealand region. This area, located approximately 10 kilometers southwest of Roskilde, features a mix of low hills, shallow valleys, and flat plains. The terrain is primarily the result of glacial activity during the last ice age, which shaped the land into its current form. The immediate vicinity of Gammel Lejre is dominated by agricultural fields and small patches of woodland. The land gradually slopes towards the Lejre River, which meanders through the area, creating a shallow valley. This river valley adds some variation to the otherwise relatively flat terrain, with gentle inclines leading down to the water's edge.

Suitable Areas for Large-Scale Solar PV

When considering areas nearby that would be most suited to large-scale solar photovoltaic (PV) installations, several factors come into play. The ideal locations would be relatively flat, open spaces with minimal shading from trees or buildings, and good access to existing infrastructure. The agricultural fields surrounding Gammel Lejre present potential opportunities for solar PV development. These areas are generally flat and open, with few obstructions that could cast shadows on solar panels. The gentle slopes in some parts of the region could actually be advantageous, as they could be oriented to maximize solar exposure throughout the day. However, it's important to note that the use of productive agricultural land for solar installations can be controversial. As such, the most suitable areas might be those that are less productive for farming or have been set aside from agricultural use. Some of the slightly elevated areas to the north and east of Gammel Lejre could also be suitable for solar PV installations. These locations might benefit from slightly higher levels of solar radiation due to their elevation and could potentially have less impact on prime agricultural land. It's worth mentioning that any large-scale solar PV project would need to carefully consider local environmental and cultural factors. The area around Gammel Lejre is rich in archaeological sites and has significant historical importance, which could limit the available locations for such developments.

Denmark solar PV Stats as a country

Denmark ranks 37th in the world for cumulative solar PV capacity, with 1,540 total MW's of solar PV installed. This means that 4.10% of Denmark's total energy as a country comes from solar PV (that's 19th in the world). Each year Denmark is generating 264 Watts from solar PV per capita (Denmark ranks 18th in the world for solar PV Watts generated per capita). [source]

Are there incentives for businesses to install solar in Denmark?

Yes, there are several incentives for businesses wanting to install solar energy in Denmark. The Danish government offers a range of financial support and tax breaks for businesses that invest in renewable energy sources such as solar power. This includes grants, loans, and tax deductions. Additionally, the Danish Energy Agency provides subsidies for businesses that install solar panels on their premises. Finally, some local authorities offer additional incentives such as reduced electricity bills or free installation of solar panels.

Do you have more up to date information than this on incentives towards solar PV projects in Denmark? 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.