Slangerup, Capital Region, Denmark, located at latitude 55.8512 and longitude 12.1865 in the Northern Temperate Zone, presents varying conditions for solar PV energy generation throughout the year. At this location, solar panels can produce approximately 5.72 kWh per day in summer, 1.84 kWh per day in autumn, 0.80 kWh per day in winter, and 4.47 kWh per day in spring for each kilowatt of installed capacity.
Seasonal Solar Production
Solar energy generation at this Slangerup location shows significant seasonal variation. Summer months provide excellent production at nearly 6 kWh daily per installed kilowatt, while spring months also offer strong generation at around 4.5 kWh daily. Autumn production drops considerably to less than 2 kWh per day, and winter sees minimal production at just 0.8 kWh daily per kilowatt installed.
For fixed solar panel installations at this location, the ideal tilt angle to maximize year-round energy production is 46 degrees facing South. This specific angle optimizes the annual solar harvest by balancing seasonal variations in the sun's position.
Challenges and Solutions
Several environmental factors could impact solar production in Slangerup. Denmark's northern climate brings potential challenges that should be considered when planning a solar installation:
- Snow accumulation during winter months can block panels, reducing the already limited winter production. Installing panels at the recommended 46-degree tilt helps shed snow naturally, and occasional manual clearing may be necessary.
- Cloud cover is common in Denmark, particularly during autumn and winter. Using high-efficiency panels designed for diffuse light conditions can help maximize energy capture even on overcast days.
- Coastal proximity means potential salt spray and increased humidity in the region, which may accelerate corrosion. Marine-grade mounting hardware and properly sealed junction boxes can mitigate these effects.
- Bird droppings and tree debris can reduce panel efficiency. Regular maintenance and installing bird deterrents can minimize these impacts.
Despite these challenges, a properly designed solar PV system with the correct orientation and tilt can still provide significant energy generation, particularly from March through September when production levels are substantially higher.
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 Slangerup
Seasonal solar PV output for Latitude: 55.8512, Longitude: 12.1865 (Slangerup, 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 Slangerup, Denmark
To maximize your solar PV system's energy output in Slangerup, Denmark (Lat/Long 55.8512, 12.1865) 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 Slangerup, 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 Slangerup, 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 Slangerup, 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 Slangerup, Denmark.
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 Slangerup, Denmark
Slangerup, Denmark is situated in the northeastern part of the island of Zealand, approximately 30 kilometers northwest of Copenhagen. The topography of the area is characterized by gently rolling landscapes typical of the Danish countryside. The terrain around Slangerup consists primarily of low-lying plains with subtle undulations, small hills, and shallow valleys. The landscape has been heavily influenced by glacial activity during the last ice age, which has left behind a mix of moraine deposits and small ridges. The elevation in the Slangerup area typically ranges from about 20 to 50 meters above sea level, with no dramatic changes in elevation. This relatively flat terrain is interspersed with small lakes, streams, and wetland areas.
Surrounding Landscape Features
To the north and northwest of Slangerup, the terrain gradually rises toward the slightly more elevated areas around Hillerød. The eastern regions feature more open agricultural land extending toward Frederikssund and the Roskilde Fjord. The southern portions maintain the gentle rolling character with a mix of agricultural fields, small woodlands, and scattered settlements. The area includes a patchwork of agricultural fields, small forested sections, and rural settlements. The soil is generally fertile glacial till, which has made the region suitable for farming throughout history. Small streams and drainage systems crisscross the landscape, eventually flowing toward the nearby fjords.Potential Areas for Solar PV Development
For large-scale solar PV installations, several areas in the vicinity of Slangerup present favorable topographical conditions. The most suitable locations would be: The open agricultural plains to the east and southeast of Slangerup offer extensive flat terrain with minimal shading obstacles. These areas provide good exposure to sunlight throughout the day and would require minimal land preparation for solar array installation. The slightly elevated areas to the southwest of Slangerup also present opportunities for solar development. These gentle slopes, particularly those with southern aspects, would receive optimal solar radiation and could potentially benefit from the natural tilt of the land. Former extraction sites or brownfield areas near the town could be repurposed for solar development, offering already-disturbed land that wouldn't compete with prime agricultural uses. The relatively open terrain between Slangerup and Frederikssund contains several parcels that combine favorable topography with proximity to existing electrical infrastructure, potentially reducing connection costs for new solar installations. It's worth noting that while the topography is generally favorable, considerations beyond pure landform would influence solar PV suitability, including current land use, environmental protections, grid connection possibilities, and local planning regulations. The Danish commitment to renewable energy has created a supportive policy environment for solar development, though careful site selection remains important to balance energy production with other land values.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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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Sunday 18th of May 2025
Last Updated: Sunday 26th of October 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.




