"Then I say the Earth belongs to each generation during its course, fully and in its right no generation can contract debts greater than may be paid during the course of its existence"

Thomas Jefferson, September 6, 1789

"You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete."

Buckminster Fuller, philosopher, futurist and global thinker (1895 - 1983)

"History teaches us that men and nations behave wisely once they have exhausted all other alternatives"

Abba Eban

Depending on the Covid-19 situation, the conference will be held in hybrid mode or full online mode.

If you plan to attend the conference on-site (limited number of seats available) make sure to read HEALTH AND SAFETY page (note the mandatory EU Digital COVID Certificate)
Almost 1100 abstracts received!

Health and safety

The Conference will be held in accordance with all anti Covid measures proclaimed by the Croatian Civil Protection Directorate and the Dubrovnik - Neretva County Civil Protection Directorate that will ensure the maximum level of safety for all participants.

Croatia currently has a new way of organising meetings, based on the obligatory possession of EU Digital COVID Certificate:
Please note that all on-site conference participants will be asked to provide the above certificate.

Croatian authorities currently accept several vaccines and QR codes of other countries, as well as a PCR test (several would be needed during the conference). Please check the following link:

Important note*: This decision is subject to change depending on the Covid situation and on the anti Covid measures proclaimed by the Croatian Civil Protection Directorate and the Dubrovnik - Neretva County Civil Protection Directorate.

For more information on a comprehensive programme of health, safety and environmental standards and advanced cleaning protocol of the Conference venue, please use the following link: HEALTH & SAFETY.

 If you have any inquiries about this topic, please send an email to



Benchmarking the performance of cities across energy, water and environment systems
related metrics presents an opportunity to trigger policy learning, action, and cooperation to bring cities closer to sustainable development.