» Preheating of ventilation air in metallic roof, air solar collector (Ran nilla) with 13 ms PV modules covering ventilation and lighting demand from solar energy.

* Wooden airtight housing construction with papergranulate-insulation and no cold bridges. ( U-value; 0.15 — 0.18 Wlnf’C)

• Low-energy windows. Veluxf Velfac.

■ A "house-without-heating system" concept

Developed by: Cenergia, Nielsen&Rubow architects and Sorry Henriksen

FIGURE 4.

Energy labellingof 1. A "Green Cataloque’2. Enviromental 3. building projects conserning Energy Oriented Building according to EU Saving Design Principles. Energy Performance and Enviromental -Qualities Directive forbuildings Quality measures for A, B,C, D,E………. (EPD) building pr ojects. E. g. A, B,C, D,E………. ,M. using best available

Certification 4. tools

technolog ies (BAT1 s) Examples of measure packages which live up to certain energy and enviroment quality levels. IncL inspiration material for architechts ,1 Performance requirements and check systems for best available technologies — ( BAT’s) and whole building projects

Performance Optimisation (PO) by maintenance, lifecycle and Total Economic Optimisation

Certification tool for enviromental quality of building projects

Principles for Influence on 7. financing ofbuilding project. Procurement strategy

FIGURE 5. ILLUSTRATION OF THE SO-CALLED, GREEN QUALITY BUILDING PROCESS WHICH HAS BEEN DEVELOPED IN CONNECTION TO THE EUROPEAN GREEN CITIES NETWORK COOPERATION, SEE ALSO WWW. EUROPEANGREENCITIES. COM.

Quality stamps. 6. Based on cetain Energy and Enviromental Quality levels. For buildings and larger urban areas о о о о о Т

5.

Energy and enviromental point systems. Like Green Build and Austrian Energy and Ecological Point System.

Principles for follow up and evaluation

SHAPE * MERGEFORMAT

Example of an A and B quality labelling system for housing which has been suggested as basis for an European Green Cities “Ecobuilding” certificate. QUALITY GRADE A Investment Savings Maintenance Quality B Heating DKK/housing unit kWh/m2 DKK/year Passive solar heat design x 6.000 6,9 0 x Heat savings through ventilation x 10.000 16,4 250 x (I = 5000) Airtightness x 2.500 9,7 0 x Energy savings through water saving x 0 2,3 0 x Energy savings in view of tenant behaviour x 1.000 7,7 x Super low-energy windows U-value=1,1 x 5.500 10,0 0 x (U=1.4) Cold bridges, 50% improvement x 3.000 5,5 0 x Additional insulation x 6.500 6,3 0 x Active solar heating x 10.000 9,4 200 Sum of chosen initiatives 44.500 56 450 Water kr. % General water saving initiatives x 1.500 15 % 0 x Water saving through tenant behaviour x 1.000 5 % 0 x Collection of rainwater x 10.000 32 % 30 Local bypass of rainwater x 2.000 0 10 x (I=1000) Sum of chosen initiatives 14.500 52 % 40 Electricity % Low-energy lighting x 2.000 5 % 0 x Electricity savings through ventilation x 5.000 10 % 0 Electricity savings through tenant behaviour x 1.000 5 % 0 x Hard white goods — Grade A x 1.000 3 % 0 x Roofed clothe drying areas x 3.000 5 % 0 Daylight optimisation x 1.000 2 % 0 x Preparation for PV x 1.000 0 0 Sum of chosen initiatives 14.000 30 % 0 Tenant behaviour Visible displays x 2.000 Mentioned under heating, water and electricity 0 x “Urban ecological guidance” x 500 0 x Green accounting x 500 0 x Further initiatives on health and environment Environmentally acceptable paint x 2.000 0 0 x PVC free building x 3.000 0 0 Exclusive “self impregnated” wood x 1.000 0 0 x Alternative insulation materials x 4.000 0 0 Indoor climate labelled surface materials x 2.000 0 0 x Waste handling x 2.500 200 0 x Composting x 1.000 0 0 Initiatives for acquiring green areas etc. x 2.000 0 0 x Securing of project quality Control through independent consultant x 5.000 0 0 25.500 Total 95.500 Total extra costs when new building regulations are in operation in January 2006 68.000 28.000

FIGURE 6. HERE IS SHOWN CONTENT AND THE EXTRA INVESTMENT COSTS FOR IMPROVED QUALITIES A AND B FOR HOUSING PROJECTS IN DENMARK. WHEN THE NEW DEMANDS IN RELATION TO THE EU ENERGY PERFORMANCE DIRECTIVE FOR BUILDINGS IS INTRODUCED IN 2006, THE EXTRA COSTS RELATED TO THIS WILL NOT BE VERY HIGH.

Additional investment

The calculated example for Denmark of a grade A building shows that an additional investment per dwelling is estimated at DKK 95.500,- shared out on DKK 44.500,- on heating measures, DKK 14.500,- on water measures, DKK 14.000,- on electrical measures, DKK 17.500,- on other measures covering health and environment, and finally DKK 5.000,- to secure the project quality. This equals DKK 995,-/m2 calculating with dwellings of 96 m2. If we assume a standard investment of DKK 10.000,-/m2 an additional investment of 9,95% is necessary as compared to a standard building.(and only 5.7% in extra costs for B)). When the new building regulations based on the EU-Energy Performance Directive for Buildings are in operation by January 2006 these extra costs will be reduced to 6.8% and 2.8% respectively.

For this additional investment a building with a considerable effort on improving of health and environment is obtained. For such a building a clear reduction of the consumption of heat, water and electricity can be expected.

Heating consumption reduced by 61% from 92 kWh/irF/year to 36 kWh/irF/year. (A) and (B): 34%, reduced to 61 kWh/mF year.

Water consumption reduced by 52% from 45 m3/person/year to 22 m3/person/year. And (B): 20%, reduced to 35 mF/persons, year.

Electricity-consumption reduced by 30% from 1300 kWh/person/year to 915 kWh/person/year. And (B): 15%, reduced to 1100 kWh person/year

This totals a CO2 reduction of 45% for (A) and 24% for (B).