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            

Warm climate EU10 countries (base building B)

Headline facts and figures

• Broadly representative of Cyprus and Malta
• 132,000 dwellings
• 4,500 buildings (theoretical)
• 28% of dwellings in the region
• Energy-saving potential in stock: 25%, equivalent to 1% of region’s final energy demand or 0.06 MtCO2 emissions

Predominant construction and heating features

• In situ concrete walls, flat concrete roof and concrete floor, single-glazed, metal frame windows
• Dwelling based electric systems or appliances

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

2.60

0.48

64.1

37.3%

0.97

1.5

5.5

Roof

3.40

0.43

22.2

12.9%

0.15

0.7

2.5

Floor

3.40

0.48

21.8

12.7%

0.17

0.8

2.9

Windows

4.20

2.71

15.0

8.7%

0.78

5.2

18.9

Package

3.11

0.88

123.1

71.7%

2.08

1.7

6.1

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

64.1

37.3%

4.8

1.5

-3.2

75

-160

Roof

22.2

12.9%

0.7

-4.1

34

-201

Floor

21.8

12.7%

0.8

-4.0

39

-196

Windows

15.0

8.7%

5.2

0.4

257

21

Package

123.1

71.7%

4.8

1.7

-3.1

84

-152

Issues

• Heating demand is the lowest of the regions.
• Malta poses issues not present in any other European country considered, because the government subsidises household energy very heavily – it costs about 0.29c/kWhe. As a consequence, building a financial argument in the same way as for the other base buildings for investment in energy efficiency is not possible.
 

EuroACE, Ave. Louise, 375 BTE-4, BE-1050 Brussels, BELGIUM.
T: +32 (0)2 639 10 10 F: +32 (0)2 639 10 15 E: info at euroace dot org

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