Green Key certified establishments meet a set of high standard environmental requirements.  The Green Key criteria and their explanatory notes are available to all interested parties and can be downloaded below. We have developed criteria and explanatory notes for six Green Key categories (hotels and hostels, campsites and holiday parks, small accommodations, conference centres, restaurants, and attractions) covering the same 13 criteria areas. 

Green Key categories

Green Key criteria have been developed for the following categories:

Hotels and hostels (for certifications completed by 30th September 2026) (pdf file)

All Green Key categories (for applications received from 1st October 2026)

Green Key Category Definitions

Green Key Scope

Green Key Glossary and Definitions

Campsites and holiday parks (for certifications completed by 30th September 2026) (pdf file)

Small accommodations (for certifications completed by 30th September 2026) (pdf file)

Conference centres (for certifications completed by 30th September 2026) (pdf file)

Restaurants (for certifications completed by 30th September 2026) (pdf file)

Attractions (for certifications completed by 30th September 2026) (pdf file)