von Gunten, DianeRager, JakobKämpf, JérômeKuchler, FabienPoumadère, Fabien2020-02-182020-02-182020-02-18201910.1088/1742-6596/1343/1/012108https://infoscience.epfl.ch/handle/20.500.14299/166363We compare simulated energy retrofitting of individual buildings with energy refurbishments optimized at the scale of the neighborhood. For the neighborhood case, buildings can also be connected together through a heat network. We use a detailed three-dimensional model to estimate heating needs (CitySim) and a mixed-integer linear optimizer to analyze different options for energy refurbishment, including various heating technologies. According to our simulations, planning at the neighborhood scale results in slightly lower costs (about -5%) and lower C02 emissions (about -60%) than planning energy refurbishment at the building scale, showing that integrated planning of energy refurbishment is beneficial from both environmental and economical points of view.text::conference output::conference proceedings::conference paper