Generating Diverse Building Decarbonization Pathways

Building decarbonization has along with it a myriad of other benefit such as improved comfort, regional economic growth, improvements in local air quality, health benefits for the occupants and local neighborhoods, lower operating costs, increased resilience to power outages, and if implemented well, benefits to social equity and energy justice. However, to date, most plans for building decarbonization don't implicitly include these benefits when deciding on the energy efficiency and decarbonization measures and don't incorporate the various national and state incentives for contributions to decarbonization, health, affordable housing, when developing these pathways. This research looks to incorporate these co-benefits in a socio-techno-economic analysis of building stock decarbonization pathways using genetic algorithms and physics-based building energy models to generate diverse but "good" solutions amenable to a variety of audiences.

The urban building stock needs to be transformed to deliver on climate change goals as buildings account for two thirds of New York City’s greenhouse gas emissions. There are varied financial mechanisms being used by state and national governments to facilitate this transition, such as New York State’s Clean Energy Fund and the National Infrastructure Reduction Act. Whilst climate change mitigation is the main motivation for these funds, climate change policies also seek to address other societal challenges such as spurring economic growth, reducing energy insecurity and providing quality housing for low-income citizens. This interdisciplinary project seeks to systematically evaluate these co-benefits of building stock decarbonization using quality-diversity (or illumination) optimization algorithms and evaluate how the generated solutions can act as a “coordination device” to help street-level bureaucrats and community stakeholders identify mutually acceptable approaches to building stock decarbonization. The aim of this proposal is to demonstrate (1) that quality-diversity algorithms can provide more acceptable candidate solutions to stakeholders than the prevailing multi-objective optimization approaches due to the rugged fitness landscape of building energy modeling problems and (2) that this framework can be a useful coordination tool to aid in generating consensus from a broad array of stakeholders. As an interdisciplinary engineering project rooted in community engagement and decarbonization, the project will focus on a case study region of the Bronx and engage with community organizations and public institutions to define the co-benefits, evaluate candidate solutions, and generate consensus. By structuring the project in this way, innovatively, the project itself serves as a “coordination tool” that will evolve in real time enabling the use of ethnographic observatory approach to evaluate its effectiveness.

Our Projects have been supported by funding from: Columbia SEAS SIRS Fund 2023
Columbia Affiliations
The Department of Mechanical Engineering