Sustainability
Sustainability at the WENS Hotel Mainz
Since August 2026, the WENS has been certified to the GreenSign Hotel standard. The programme is recognised by the Global Sustainable Tourism Council (GSTC).
Certificate
In July 2026, a GreenSign auditor spent a day with us and inspected the rooms, kitchen, building services, housekeeping, garage and outdoor areas. She assessed 133 criteria in ten areas, from energy and water through purchasing and mobility to social responsibility.In July 2026, GreenSign inspected the hotel for a full day: 133 criteria, from energy to social responsibility.
Our contact for this at the hotel is our sustainability officer, Michelle Martin. She keeps track of the measures and plans the next steps.
Registration number 100-01336-2026-08-11-1click to enlarge
What we do
What we put into practice
A selection of the measures reviewed in the audit. We have not yet got as far with a carbon footprint assessment or with Fairtrade products in our purchasing. That is what we are working on next.
Energy
- 100% of electricity from renewable sources
- Our own photovoltaic system, which supplies part of our electricity
- Over 90% LED lighting, motion sensors and timers
- Air conditioning switches itself off after four hours
Water and cleaning
- Water-saving taps, showers and flush buttons
- Towel change and room cleaning at your request
- Eco-friendly cleaning products
- Vegan, cruelty-free toiletries
Purchasing and region
- More than 90% of our kitchen and breakfast purchasing from suppliers within 100 km
- Bread and rolls from the baker 300 metres away
- Organic milk and organic eggs
- Vegan choices at the breakfast buffet
Mobility and access
- EV charging points at the hotel
- Covered bicycle parking
- Accessible rooms with bathroom
- At least half the team lives within 10 km
Programme
Our sustainability programme
WENS Hotel is committed to sustainable management with a focus on the environment, social responsibility and the careful use of resources.
Reduce energy and CO₂
Goal: Cut energy consumption by 10% within 3 years
Measures: LED lighting, smart heating control
Responsible: management, technical team
Reduce water consumption
Goal: Reduce water consumption per guest night by 10%
Measures: Water-saving fittings
Responsible: housekeeping, technical team
Avoid waste
Goal: Reduce residual waste by 20% within 2 years
Measures: Waste separation, no single-use products, reusable containers
Responsible: purchasing, housekeeping
Promote regional products
Goal: Increase the share of regional products to 50%
Measures: Prefer regional suppliers, use seasonal food
Responsible: purchasing, kitchen
Support employees
Goal: Increase employee satisfaction in the long term
Measures: Training, regular feedback meetings
Responsible: human resources
Make sustainability visible
Goal: Embed sustainability in everyday hotel life
Measures: Guest information, staff training
Responsible: management
Implementation and monitoring
- Annual review of the goals
- Recording of energy, water and waste figures
- Regular updates for employees
- Ongoing adjustment of the measures
Timeline
- Short term (0 to 12 months): LED conversion, waste separation, training
- Medium term (1 to 3 years): lower consumption, regional supply chains
- Long term (3 to 5 years): renewable energy and sustainable technology
The programme is reviewed regularly and adapted to new legal requirements, technological developments and operational experience.
For organisers
Sustainable meetings in Mainz
Many companies have to show how sustainably their meeting venues operate. The GreenSign certificate gives you this evidence in writing. In our day delegate packages we focus on regional products and vegan alternatives.The GreenSign certificate is your written proof of a sustainable meeting venue.
We are happy to send the certificate with our proposal.
Meetings overviewHow we act as a company is described in our mission statement.