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News and Blogs Our wellness hotels awarded with a Green Key Gold certificate
19 February 2026

Our wellness hotels awarded with a Green Key Gold certificate

Written by: Jetske Boonstra

Last week, our colleagues at Thermen Bussloo, Thermen Bad Nieuweschans, and Thermen Berendonck were proud to receive (once again) the Green Key Gold certificate for all our wellness hotels.

The Green Key certification demonstrates our commitment to operating in the most environmentally conscious and sustainable manner possible, without compromising on comfort and quality for our guests. At Thermen Resorts, we believe that operating with a focus on people and the environment is not a choice, but a requirement. “The renewal of our Green Key Gold certificate is the crowning glory of the work of all employees who are committed to our resorts and hotels every day,” says Fabian Dolman, general manager of Thermen Resorts.

The renewal of our Green Key Gold certificate is the crowning glory of the work of all employees who are committed to our resorts and hotels on a daily basis.

Fabian Dolman - Director of Thermen Resorts

About Green Key

Green Key is the international quality mark for sustainable businesses in the recreation and leisure industry and the business market. Businesses with a Green Key quality mark do everything they can to protect the environment. In doing so, they go a step further than normal laws and regulations require. Green Key has three levels: Bronze, Silver, and Gold. The more sustainability measures a company implements, the more sustainability standards it achieves, and the higher its Green Key level.

The Green Key organization also has the national label “Sustainable Hospitality” for the leisure sector in the Netherlands. The three Thermen Resorts locations without hotels have once again been awarded the gold classification ‘Sustainable Hospitality’ for their thermal baths for 2026. Fabian: “Our own Green Key team keeps us focused on sustainability requirements and helps us think about how we can always (continue to) improve.”

Our own Green Key team keeps us focused on sustainability requirements and helps us think of ways to continuously improve.

Fabian Dolman - Director of Thermen Resorts

Sustainable initiatives within our resorts

Every day, Thermen Resorts is committed to creating a more sustainable world: for our guests, our staff and future generations. Here are a few examples of the steps we are taking towards a 100% sustainable wellness experience:

Many of our resorts are ‘all-electric’, meaning they are completely gas-free and run on 100% renewable energy. We have our own vegetable gardens, water sources and charging points; our roofs are covered in solar panels, and we are committed to smart, sustainable technologies. We reduce our energy consumption through the use of heat pumps, heat recovery systems and energy-efficient LED lighting. We also use water responsibly by reusing heat and installing water-saving facilities, and we can manage our energy more efficiently by our energy buffers. These enable us to use fully sustainably generated energy whenever it is needed.

You can also enjoy our menu with complete peace of mind, featuring plenty of delicious vegetarian options, organic produce, home-grown ingredients and collaborations with local businesses.

This is how we offer our guests comfort with an eye to the future!