Success Factors of High Energy Efficient Buildings in Germany

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), 03.06.2016

Dr.-Ing. Robert Himmler Sustainable buildings and neighborhoods

Theory… … and Practice!

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

Rainy Season in Thailand Summer in Germany

100 [%]

electricity 80 change consump. – 25 %

60 RE + 60 %

primary energy 40 consump.– 50 %

0 1990 2020 2030 2040 2050

education emotion promotion

Tambourine

laws financial regulations incentives codes standards Stick

Carrot

EPBD EU - Energy Performance of Buildings Directive

EnEG EEWärmeG EEG Energy Saving Law Renewable Energy Law (Heating) Renewable Energy Law

EnEV Building Energy Code

Solarthermal PV

Biomass

Building Envelope Grid Primary Energy

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

EnEV Primary Building energy Building Energy Code envelope

Delict Parties involved Penalty Residential Owner and Building not 2 Mio. THB Consultants according to BEC Non-Residential New Buildings Building not Owner and 2 Mio. THB according to BEC Consultants

No Energy Owner 600.000 THB Passport Energy Passport Seller, Landlord 600.000 THB was not shown Existing Buildings Energy Passport was not handed Seller, Landlord 600.000 THB over

EEWärmeG: Possibilities to fulfil

50 % • Use one of the following renewables: 15 %

solar thermal collector Heat pump 0,04 m2 per m2 floor area SEER > 3,5

30 %

50 %

Wood pellet Add biogas heating or biooil

• Alternatives: 50 %

15%

Undercut BEC Combined heat & power (CHP)

Power Grid

Funding by KfW and on-lending through retail banks

Capital market State liability Institution owned Funding by Federal Republic AAA Rating and federal states Refinancing Loan to loan retail customer Customer bank Interest rate Interest rate Interest Margin for credit subsidy risk and handling

German Promotional Advantages: Government mandate • No distortion of competition • Concentration on core competences or KfW defined by KfW Law • Diversification of risks

payback Efficiency bonus

KfW-Effizienzhaus 40 plus 15 % Interest rate KfW-Effizienzhaus 40 (0,75 % - 1,5 Max. loan 4 Mio. 10,0 % THB per unit %) KfW-Effizienzhaus 55 5 %

• KfW-Effizienzhaus XX: Primary energy demand for heating, cooling and ventilation < XX kWh/m2a • KfW-Effizienzhaus 100: New German single family house, which fulfils requirements of BEC

Public Customer Lobbying Relations Relations

● Internet ● Call center ● Politics ● Press ● Counseling center ● Government ● Trade fairs ● Partner liaison ● Associations etc. ● Print media ● Retail banks

Assistance to Equity Awards Marketing partners holding

KfW Academy Advisor data base

Renewable Energy Generation

Renewable Energy generated onsite and supplied to grid

Renewable Energy generated and consumed onsite

Energy Saving Energy Demand

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

Roof: Back-ventilated Wall: Mineral Wool Roof Mineral Wool (10 cm, U < 0,3 (5 cm, U < 0,6 W/m2K) W/m2K)

External Shading

Window: 2 Glazing: Ug = 1,7 W/m K; g = 0,33; τ = 0,66 2 Frame: Uf = 1,5 W/m K

Household PV Field (5 kW) appliances

Water cooled Public Grid Cold Water Chiller

1000 l Fan Coils Ice Storage (10 kW) Dry Heat Rejection

Bathroom  Energy Costs: 10.000 THB/a Domestic Hot Water Storage

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TH TH 06 07

T T 04 05

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Gropiusplatz 10 Tel. +49 711 99 007 - 5 [email protected] D-70563 Stuttgart Fax +49 711 99 007 - 99 www.egs-int.com