Environment and Certification
Alsik Hotel & Spa operates around the clock. Behind the guest rooms, restaurants and spa is a comprehensive daily operation involving everything from housekeeping and kitchens to technical systems, procurement, energy and waste.
Much of this work takes place behind the scenes. We monitor our energy and water consumption as well as the amount of waste we generate, and we work actively with procurement and resource use. Some of these efforts are carried out as part of our Green Key certification.
Green Key – tourism’s environmental label
Alsik Hotel & Spa has been Green Key certified since 2024. Green Key is an international certification programme for tourism businesses. Certified businesses must meet a range of criteria and document their efforts as part of the certification process.
At Alsik, this includes having an environmental action plan and a procurement policy, as well as working systematically with energy, water, waste, cleaning and procurement.
Some of these efforts are visible to our guests, for example through waste sorting, the option to decline housekeeping, and eco-labelled soap in the guest rooms and spa. Other initiatives take place behind the scenes. These include efforts to reduce food waste, while 90% of the cleaning products used for daily cleaning are eco-labelled. We also use eco-labelled paper for copying, toilet facilities and hand drying.
You can read more about Green Key here.
The technology behind the hotel
Some of our sustainability efforts have been integrated into the building itself. Alsik has an A2020 energy label, which reflects the building’s calculated energy performance. A2020 refers to the former voluntary Building Class 2020, which introduced stricter requirements for the energy needs of buildings.
The roof of Alsik features 421 m² of solar panels, which contribute to the hotel’s electricity consumption, while parts of the roof have been designed as sedum roofs. Among other things, sedum roofs can retain and delay rainwater runoff.
Most of the hotel’s lighting is LED, and frequency converters from Danfoss are used in the ventilation, cooling and pumping systems to regulate their operation according to demand. The hotel is heated using district heating. According to Sønderborg Varmes’ 2025 district heating declaration, 70.42% of the energy supplied through district heating came from renewable sources.
For Alsik’s remaining electricity consumption, guarantees of origin from wind power are purchased.