Building the future by doing more together

GENESIS - Green roofs and walls ENvironmental Economic and SocIal Savings: Modelling uncertainty and investors / users preferences in all-inclusive cost-benefit analysis of green roofs and walls
Coordinator - Cristina Matos Silva
CESAM Responsible researcher - Ana Isabel Miranda
Programme - Programa Operacional Regional do Centro; Programa Operacional Regional de Lisboa
Execution dates - 2018-10-09 - 2021-10-09 (36 Months)
Funding Entity - Portugal 2020
Funding for CESAM - 13337 €
Total Funding - 239812 €
Proponent Institution - Instituto Superior Técnico
Participating Institutions
Universidade de Aveiro
Instituto Superior Técnico
Instituto Superior de Agronomia

Nature based solutions/green infrastructures will play an important role in tackling urban challenges in a multifunctional
way. In this sense, green roofs/walls are one of the most promising alternatives as they can green the grey
infrastructure and value it. Yet, green roofs/walls have been generally confined to specific cities or countries. An
extensive use of green roofs/walls worldwide will happen when their economic merit is generally known and accepted.
Today, green roofs/walls real value is not clear since most studies on their economic merit show high variability and
contrasting results mostly because 1) it is a challenge to weigh environmental and social benefits with costs and 2)
distinct users/investors have different preferences.
The purpose of GENESIS is to develop a comprehensive and systematic model for balancing environmental, economic
and social benefits of green roofs/walls with the underlying extra costs, in a life cycle perspective.
The main strategy of the project is to enhance cost-benefit analysis of green roofs/walls by developing three major
improvements: i) include all environmental, economic and social benefits of green roofs/walls in the analysis and
convert them into monetary units to allow weighting different types of benefits and establishing a comparative basis of
alternative scenarios; ii) comprise an uncertainty model to cope with inaccurate forecasting of benefits/costs modelling
and climate change; iii) incorporate users/investors preferences through a multi-criteria model. This (all-inclusive)
model is a step forward in life cycle costs of green roofs/walls and crucial for a wide spreading of green roofs/walls
in buildings/cities.
Given the trans-disciplinary nature of green infrastructure, GENESIS project will call upon a multidisciplinary research
team, with complementary expertise in estimating green roofs/walls environmental, economic and social benefits and
performing accurate cost-benefit analysis. The contribution of practitioners and companies involved in the design,
creation and maintenance of green roofs/walls is planned. Additionally, multiple investors/owners from private and
public sectors will participate in the project by providing data for benchmark case studies with strong replication
and up-scaling capacity: two municipalities covering distinct realities (in Portugal and Australia), residential buildings,
public schools, tourist accommodations and transport infrastructures. This multidisciplinary approach will support the
proposed cost-benefit model for replication in different regions of the world and type of infrastructure.


Members on this project
Ana Isabel Miranda
Coordinator
Carlos Silveira
Researcher
Kevin de Oliveira
Researcher

CESAM Funding: