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            

Moderate climate AS3 countries (base building F)

Headline facts and figures

• Broadly representative of Bulgaria and Romania
• 1.9 million dwellings
• 40,000 buildings (theoretical)
• 22% of dwellings in the region
• Energy-saving potential in stock: 31%, equivalent to 2.2% of region’s final energy demand or 1.1 MtCO2 emissions

Predominant construction and heating features

• Prefabricated concrete panel walls, flat concrete roof and concrete floor, double-glazed, wood 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

1.20

0.30

61.4

33.7%

0.78

1.3

11.0

Roof

2.17

0.24

24.4

13.4%

0.11

0.4

3.8

Floor

1.10

0.45

8.2

4.5%

0.13

1.6

13.7

Windows

2.60

1.80

18.2

10.0%

0.64

3.5

30.6

Package

1.57

0.51

123.7

67.8%

1.66

1.3

11.6

TRVs

54.7

30.0%

0.11

0.2

1.3

All of the above combined

133.4

73.1%

1.77

1.3

11.3

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

61.4

33.7%

2.0

1.3

-0.7

55

-32

Roof

24.4

13.4%

0.4

-1.6

19

-68

Floor

8.2

4.5%

1.6

-0.4

69

-18

Windows

18.2

10.0%

3.5

1.5

154

67

Package

112.3

61.5%

2.0

1.5

-0.5

65

-23

TRVs

54.7

30.0%

0.2

-1.8

8

-79

All above

133.4

73.1%

1.3

-0.7

58

-29

Issues

• Very low fuel prices make investment one of the least cost-effective of all regions.
 

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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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