September 8, 2016



Background & Objectives

Cascais is a coastal municipality located in the Lisbon Metropolitan Area. With an area of 97 km2 and over 30 km of coastline, it also has protected landscape classified by UNESCO. With this geographic configuration it provides a unique landscape which comprehensively contributes to Cascais being a renowned tourism destination.

Hence, environmental values are of crucial relevance to the municipality as all citizens (residents and visitors) demand the maintenance and quality of these natural resources. This is a demanding task as Cascais has over 206 000 inhabitants and over 1,2 million tourist stays per year.

The EMAC – Cascais Ambiente is the municipal company responsible for urban waste collection, urban cleaning and environmental protection in Cascais.

Individually, each of these services is common in many municipalities and Cascais strives on service quality and proximity with all citizens.

The waste collection is a daily task as it requires the correct maintenance of thousands of bins, trucks, service areas and the continuous service optimization with new technologies to help decision makers within the smart city scope of action. This also includes a valuable approach based on citizen participation where the input and collaboration is well organized and productive.

Despite all this, the PAYT system is yet to be implemented as a solution to increase consumer’s environmental behavior and awareness.

The Waste4Think project in Cascais is a test to the implementation of such technology and a challenge to both service providers and citizens. A demanding opportunity to test new technology and consumer behaviors in order to develop a new waste management system.

The Waste4Think will be implemented in Quinta dos Lombos neighborhood within Carcavelos parish.

This study area has over 2500 inhabitants and we expect to implement the PAYT System by placing new bins with access cards with close user support by EMAC – Cascais Ambiente.


The implementation of the Waste 4 Think Project will be gradual and with close interaction between the service and the users.

A new technology and process in daily lives of citizens can impact them negatively with difficulty in adjustment or resistant to change. Currently, all the citizen has to do is place the waste in the bin that is located closer to the house. That is all. When implementing a PAYT system, we need them to use an access card, to open a lock mechanism and to expect a differentiation within a new invoice in addition to the existing one (waste and water are merged in the same invoice).

Hence, we are expecting to create a communication program to ensure citizens are aware of the benefits of the PAYT system and other benefits that rise from its use, both financial and environmental.

The first stage is to implement and covert the underground bins for the PAYT system as they are more visually friendly and have more capacity. The system will maintain its free access.

Secondly, it will be developed a communication campaign to attracts volunteers and give them the tools and knowledge to use the PAYT system. This is followed by a close interaction between users and the waste service staff exclusively allocated to the project. The staff will organize training and workshop sessions, mobilize people in social network groups, manage events and other related initiatives (gamification, etc.) exclusively dedicated to all participants.

As this is all new, the follow through of the project will depend on the capacity to troubleshoot user problems or challenges and to fine tune an easier interaction for the user.

Finally, the PAYT will come with the final invoice form that will assess the user’s environmental performance and the evolution of the waste deposit amount and quality.