Success factors of high energy efficient buildings in Germany

Transcription

1 The Joint Graduate School for Energy and Environment EGS-plan (Bangkok) Co. Ltd. Success factors of high energy efficient buildings in Germany Closing Seminar of Thai-German Programme on Energy Efficiency Development Plan (TGP-EEDP), Dr.-Ing. Robert Himmler

2 Sustainable buildings and neighborhoods Theory and Practice! Energy Plus Buildings Energy and sustainability concept for zero and plus energy buildings Life Cycle Costs of Buildings Calculation of economic efficiency of energy saving measures Master of Sustainable Design Development of a new Curriculum Master of Sustainable Design EGS-plan Germany More than 60 engineers working on zero energy and energy plus buildings EGS-plan Bangkok Newly established subsidiary to provide engineering and consulting services: - Energy and sustainability concepts - Building simulation - Quality control - Green building certification 2

3 Weather in June 2016 in Thailand and Germany Rainy Season in Thailand Summer in Germany 3

4 change [%] German National Energy Plan Long Term Objectives electricity consump. 25 % RE + 60 % 40 primary energy consump. 50 %

5 Development of the Energy Demand of Buildings in Germany 5

6 Market acceptance of Energy Efficiency is as stubborn as a donkey! education promotion emotion Tambourine financial incentives Stick laws regulations codes standards Carrot 6

7 Laws, Standards, Regulations 7

8 Laws and regulations regarding energy efficiency in buildings EPBD EU - Energy Performance of Buildings Directive EnEG Energy Saving Law EEWärmeG Renewable Energy Law (Heating) EEG Renewable Energy Law EnEV Building Energy Code Solarthermal PV Biomass Building Envelope Primary Energy Grid 8

9 Energy Saving Decree and Calculation according to German Standard DIN DIN V 18599: Energy Assessment of New Buildings Calculation of primary-, end- and use-energy demand In accordance with EU s EPBD Whole building approach Primary energy demand for heating, cooling, ventilation, domestic hot water and lighting Applys to residential and non-residential buildings as well as for new and existing buildings 9

10 Energy Passport for New (DIN 18599) and Existing (Energy Bills) Buildings EnEV Building Energy Code Primary energy Building envelope 10

11 Penalties regarding BEC for new and existing residential and non-residential buildings New Buildings Delict Parties involved Penalty Residential Building not according to BEC Non-Residential Building not according to BEC Owner and Consultants Owner and Consultants 2 Mio. THB 2 Mio. THB No Energy Passport Owner THB Existing Buildings Energy Passport was not shown Energy Passport was not handed over Seller, Landlord Seller, Landlord THB THB 11

12 EEWärmeG - Renewable Energy Law (Heating) EEWärmeG: Possibilities to fulfil Use one of the following renewables: 15 % 50 % solar thermal collector 0,04 m 2 per m 2 floor area Heat pump SEER > 3,5 50 % 30 % Wood pellet heating Add biogas or biooil Alternatives: 15% 50 % Undercut BEC Combined heat & power (CHP) 12

13 Financial Incentives 13

14 EEG Renewable Energy Law (feed-in tariff) PV Power Grid 14

15 Financial Incentives for Energy Efficiency in Buildings Funding by KfW and on-lending through retail banks Capital market State liability Institution owned by Federal Republic and federal states Funding AAA Rating Refinancing loan retail bank Loan to customer Customer Interest rate Interest rate Interest subsidy Margin for credit risk and handling German Government or KfW Promotional mandate defined by KfW Law Advantages: No distortion of competition Concentration on core competences Diversification of risks 15

16 Financial Incentives for Energy Efficiency in Residential Buildings through KfW Efficiency payback bonus KfW-Effizienzhaus 40 plus KfW-Effizienzhaus 40 KfW-Effizienzhaus 55 Interest rate (0,75 % - 1,5 %) Max. loan 4 Mio. THB per unit 15 % 10,0 % 5 % KfW-Effizienzhaus XX: Primary energy demand for heating, cooling and ventilation < XX kwh/m 2 a KfW-Effizienzhaus 100: New German single family house, which fulfils requirements of BEC 16

17 Education, Promotion 17

18 KfW Information Activities Public Relations Customer Relations Lobbying Internet Press Trade fairs Print media Call center Counseling center Partner liaison Retail banks Politics Government Associations etc. Awards Assistance to Marketing partners Equity holding KfW Academy Advisor data base 18

19 Information and Consulting through DENA (German Energy Agency) 19 19

20 Emotion 20

21 Pilot and Demonstration Projects 21

22 Energy Plus Buildings as Demonstration and Pilot Projects Renewable Energy Generation Renewable Energy generated onsite and supplied to grid Renewable Energy generated and consumed onsite Energy Saving Energy Demand 22

23 SMA Solar Academy Kassel, Germany 23

24 Plus Energy Concept 24

25 Single Family House Berghalde, Leonberg, Germany 25

26 Energy Plus Concept 26

27 The Pruksa+ Project in Bangkok Idea: Design of a single family house, which fulfils the highest sustainability and energy requirements. Implementation: 50 % reduction of cooling energy demand by passive measures 50 % of total energy demand (cooling & household appliances) will be covered by solar energy DGNB Gold sustainable building certification anticipated 29

28 Building Physics Roof: Mineral Wool (10 cm, U < 0,3 W/m 2 K) Back-ventilated Roof Wall: Mineral Wool (5 cm, U < 0,6 W/m 2 K) External Shading Window: Glazing: U g = 1,7 W/m 2 K; g = 0,33; τ = 0,66 Frame: U f = 1,5 W/m 2 K 30

29 Energy Supply with 5 kw PV field and a 1000 l ice storage PV Field (5 kw) Household appliances Public Grid Water cooled Cold Water Chiller 1000 l Ice Storage Fan Coils (10 kw) Dry Heat Rejection Energy Costs: THB/a Domestic Hot Water Storage Bathroom 31

30 Measurement and Verification SR TH TH 02 TH 03 TH 04 TH 06 TH 07 T 04 T 05 T 12 T 11 T 10 T 09 T 08 T 01 T 02 T 03 T 06 T 07 TH 05 32

31 Thank you for your Attention! Gropiusplatz 10 D Stuttgart Tel Fax