Optimising the Building Renovation Wave and RES in

Optimising the Building Renovation Wave and RES in Buildings Åsa Wahlström CIT Energy Management Adjunct Professor Lund University 24 september 2020 Workshop: EUFORES 1

Energy efficiency potential Energy for heating TWh 30 30 15 15 2000 2050 2005 2000 2050 Multifamily houses 2

Refined systematic approach for energy renovation Step 1 Create the basis for decision Gathering of basic information Energy audit and identification of energy saving measures Energy calculations Investment cost estimations Forming a package of measures Step 2 Carrying out the measures Step 3 Follow up Planning and designing the measures Measuring energy use Construction work and installations Checking profitability results Functional performance checks

Internal rate of return diagram The whole package of measures should meet the property owner´s profitability requirements 4

� Internal rate of return diagram 5 Illustration: Energilyftet

� More motivations Increased property value Improved indoor environment SME Reduced operation costs Meet environmental objectives 6 Illustration: Energilyftet

Primary energy Typical multifamily house built in the 50 ths Before Investment Internal rate of return Building envelope Building services measures All together

PV panels potential on roofs Electricity use Non-residential buildings Multi-family houses One-family houses 2010 2050 8

Energy efficiency and renovation of multifamily houses Million Euro 2021 91 2022 228 2023 95 9

Workshop: EU Energy Efficiency Policy Implementation in Finland the upcoming Renovation Wave Thanks! Åsa Wahlström asa. wahlstrom@cit. chalmers. se 24 september 2020 10