Welk koolstofvrij gebouwenpark moeten we nastreven en welke hindernissen moeten we daarbij overwinnen?

Sam Hamels, UGent

Deze presentatie geeft een helicopter perspectief op het werk van Sam Hamels binnen het NEPBC project, waarbij de belangrijkste inhoud en lessen van de verschillende rapporten en papers worden opgesomd. Daarbij komen onder andere volgende vragen aan bod: Hoe het meest kostenefficiënte traject naar een koolstofvrij gebouwenpark identificeren? Welke hindernissen belemmeren een opschaling van de renovatieactiviteit? En, specifiek voor Vlaanderen, hoe ernstig zijn de financiële barrières hier? (bv: in welke mate kunnen huishoudens de nodige renovaties financieren?). Tot slot kijkt Sam op een kritische manier naar de primaire energiefactor (PEF) voor elektriciteit, en bespreekt hij of we meer moeten focussen op gebouwperformantie in termen van CO2-uitstoot eerder dan primaire energievraag.

Video presentation: on present and future Primary Energy Factors

Sam Hamels provides an overview of the different aspects related to calculating primary energy factors (PEF’s) for electricity consumed by buildings. Aspects include the geographical scope, temporal resolution and taking into account electricity imports. Taking these aspects into account, Sam also provides indicative PEF results for the years 2020, 2025, 2030 and 2040.

Report: Barriers and motivators driving the renovation of the residential building stock

Enormous investments in renovation activities are necessary to realize a carbon-neutral building stock by the year 2050. Home owners need to invest in a variety of measures, like replacing their heating system and improving insulation levels. However, the rate at which these invests are happening is much too slow.

To better understand what is causing this low renovation rate and how to increase it, this report reviews the most recent academic literature on the subject. Many so-called ‘barriers’ can be identified, which hinder renovation investments in some way. But we also identify many ‘motivators’. These are just as important in order for the investments to happen.

NEPBC Report - Barriers and Motivators Renovation, UGent.pdf

Report: Trade-offs for a cost-efficient transformation of the residential buildings sector

Climate scientists have made clear that CO2-equivalent emissions should be reduced by 80-95% by the year 2050. To make this possible, it has been estimated that more than 90% of the European building stock needs to be adapted. That can be partially realized by replacing existing buildings with newly built ones, but large-scale renovation will also be inevitable. Assuming that newly built and renovation activities will gather the necessary pace, billions of euros will be spent on the decarbonisation of the building sector across the next decades. Allocating these resources efficiently is a critical success factor and thus one of the main challenges policy makers are facing today.

The scope of this report is limited to cost-optimality from a techno-economic perspective. This is already immensely challenging, especially if the analysis is performed at the societal level. However, it should be noted that this leaves many important aspects out of scope.

NEPBC Report - Trade-offs for a cost-efficient transformation of the residential building sector, Ugent.pdf

NEPBC - Sam Hamels_Cost efficient building stock transformation_Extended slides.pdf