Decarbonizing real estate portfolios considering optimal retrofit investment and policy conditions to 2050.

Retrofitting existing buildings is crucial for achieving Net Zero emissions. Institutional real estate owners play a key role because of their significant ownership, especially of large buildings. We utilize an interdisciplinary approach to evaluate cost-optimal decarbonization conditions for three Swiss real estate portfolios owned by a global institutional investor. We leverage a bottom-up optimization framework for building asset retrofitting, scaled to the portfolio-level, to study the effect of policy scenarios and implementations. Results indicate that achieving Net Zero necessitates significant investments, largely through thermal energy efficiency measures and low-CO

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© 2023 The Author(s).

Déclaration de conflit d'intérêts

The authors declare the following competing interests: several of the authors have founded a start-up (university spin-off) based on the optimization models used in this work. In this start-up, only one of the authors (I.P.) is in an operational role while three others are scientific advisors (G.M., C.K., V.H.).