oThe European Alliance of Companies for Energy Efficiency in Buildings
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Overview

Assessing the Situation
• Current potential *
• Wider benefits

Finding a Way Forward
• Opportunities and barriers
• Case studies
• Recommendations

Downloads

Index of links

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High-Rise project >> Assessing the Situation > Current potential >

Refurbishment measures Results      
• For each base building Overall            

Cold climate EU10 countries (base building H)

Headline facts and figures

• Broadly representative of Estonia, Latvia, Lithuania and Poland
• 6.1 million dwellings
• 125,000 buildings (theoretical)
• 41% of dwellings in the region
• Energy-saving potential in stock: 34%, equivalent to 4.4% of region’s final energy demand or 9.3 MtCO2 emissions

Predominant construction and heating features

• Prefabricated concrete panel walls, flat concrete roof and ground floor above an unheated basement, secondary-glazed, plastic frame windows
• District heating, allowing installation of TRVs and balancing valves

Cost effectiveness of energy efficiency investment

Energy savings, investment costs and cost of conserved energy

 

U-value before

U-value after

Energy saved [kWh/m2a]

Annual investment cost [€/m2a]

Cost of conserved energy [€cent/kWh]

Simple payback [a]

Walls

1.00

0.28

62.2

30.9%

0.96

1.5

11.8

Roof

0.90

0.30

9.9

4.9%

0.04

0.4

2.9

Floor

0.90

0.45

7.4

3.7%

0.14

1.9

14.9

Windows

3.00

1.80

34.3

17.0%

0.65

1.9

14.5

Package

1.37

0.59

113.9

56.6%

1.79

1.6

12.1

TRVs

60.4

30.0%

0.15

0.3

1.5

All of the above combined

140.2

69.6%

1.95

1.4

10.5

Energy savings, costs of energy and of CO2 mitigation

 

Energy saved [kWh/m2a]

Cost of supplied energy [€cent/kWh]

Cost of conserved energy [€cent/kWh]

Net cost of conserved energy [€cent/kWh]

Cost of CO2 mitigation [€/tCO2]

Net cost of CO2 mitigation [€/tCO2]

Walls

62.2

30.9%

2.3

1.5

-0.7

63

-29

Roof

9.9

4.9%

0.4

-1.9

15

-77

Floor

7.4

3.7%

1.9

-0.3

79

-13

Windows

34.3

17.0%

1.9

-0.4

77

-15

Package

113.9

56.6%

2.3

1.6

-0.7

64

-28

TRVs

60.4

30.0%

0.3

-2.0

10

-82

All above

140.2

69.6%

1.4

-0.9

57

-36

Issues

• Highest dwelling proportion, second highest energy saving potential and CO2 reductions.
• Fairly homogeneous high-rise stock.
• Low cost-effectiveness of investment due to low energy prices.
 

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T: +32 (0)2 639 10 10 F: +32 (0)2 639 10 15 E: info at euroace dot org

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