Plizio Visual Lab
Arcon-Sunmark Sønderborg
Arcon-Sunmark in Sønderborg was a global leader in large-scale solar thermal energy, playing a pivotal role in Denmark's green energy transition. The company was formed in 2014 through the merger of Arcon Solar and Sunmark, focusing on the construction of massive solar collector fields for district heating networks. The technology in Sønderborg is a cornerstone of the city's ProjectZero initiative, which aims for total carbon neutrality by 2029. These systems utilize solar radiation to heat water, which is then stored in large-scale seasonal pit heat storages for use during the winter months. Although the market for large solar thermal plants has evolved, the site remains a significant hub for technical expertise in renewable energy supply. The economic impact extends across Southern Denmark, fostering innovation in the decarbonization of industrial heating processes. Today, Sønderborg serves as an international showcase for integrated municipal energy systems and sustainable urban planning.
- Location: Denmark
- Top sights: Deutsches Museum Nordschleswig · Ringridermuseet · Sankt Marie Kirke
- Nearby: Augustenborg (7 km)
Best time to visit & climate
The most pleasant time to visit is Jun–Aug.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 1 | 1 | 3 | 7 | 12 | 15 | 18 | 18 | 15 | 10 | 6 | 3 |
| Rain mm | 63 | 51 | 46 | 36 | 50 | 69 | 76 | 82 | 60 | 69 | 63 | 65 |
📋 Practical info
Geography
Facts
- Arcon-Sunmark was established through a corporate merger in 2014.
- The city of Sønderborg targets net-zero carbon emissions by 2029.
- Solar thermal fields here provide heat for thousands of households.
- Seasonal pit heat storage is a key component of the energy system.
- Denmark accounts for a major share of Europe's solar thermal capacity.
- The technology reduces annual CO2 emissions by thousands of tonnes.
Explore nearby
Notable places around
Route planner — Car & Motorhome
Where do you start? We build the route here, with stops and country notes along the way.
© OpenStreetMap contributors · OpenRouteService
Sights in the town Arcon-Sunmark Sønderborg (10)
Ringridermuseet🏛 museum
The museum in Sønderborg shows the tradition of ring riding in Denmark.
Sønderborg Rådhus
The town hall in Sønderborg is a historic building from the 19th century.
Kong Christian D. X's Bro
The bridge in Sønderborg connects the island of Als with the mainland.
Mølleparkens Friluftscene
The open-air stage in Mølleparken in Sønderborg hosts outdoor events.
Alsik PoV
The viewpoint in Sønderborg gives a view over the city and the harbour.
Bymøllen
The windmill in Sønderborg is a historic structure from the 19th century.
Sønderborg Teater
The theatre in Sønderborg presents plays, music and other performances.
Sights nearby
Frequently asked questions
What does Arcon-Sunmark do in Sønderborg?
Can one see the solar parks?
Why is Sønderborg a model for energy?
Are there green energy tours?
Is Sønderborg worth a visit?
Arcon-Sunmark Sønderborg: where is it located?
Arcon-Sunmark Sønderborg: what is there to see?
Arcon-Sunmark Sønderborg: when is the best time to visit?
Arcon-Sunmark Sønderborg: why is it worth visiting?
Nearby cities
