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en:heated_surface
Building energy performance
The energy performance of a building (or building efficiency) is expressed in kWh/m2. This metric represents the annual average heating demand per unit of inhabited surface. The lower this value; the higher the efficiency of the building (irrespective of its size). In 2011 the Swiss building stock consumed an average of 92 kWh/m2 [1].
The values for the annual average heating demand are taken from the three scenarios presented in PROGNOS 2012 [1] and they define the max and min values for the building efficiency slider.
| Annual average heating demand [kWh/m2] | ||
|---|---|---|
| Scenarios | 2035 | 2050 |
| New energy policies | 41 | 21 |
| Political measures of the Federal Council | 49.5 | 33 |
| Business as usual | 57 | 43 |
Each scenario has a series of assumptions, as mentioned previously, one is the rate of refurbishment for buildings depending on their age.
| Buildings constructed before 2011 that will had been refurbished by 2035 or 2050 [%] | ||
|---|---|---|
| Scenarios | 2035 | 2050 |
| New energy policies | 54 | 87 |
| Political measures of the Federal Council | Not available in the report | |
| Business as usual | 36 | 53 |
The efficiencies of refurbished/new buildings is also scenario dependent.
| Maximum heating demand for new and refurbished buildings in 2035 and 2050* [W/m2] | ||||
|---|---|---|---|---|
| Scenarios | New | Refurbished | ||
| 2035 | 2050 | 2035 | 2050 | |
| New energy policies | 6.6 | 6.3 | 9.9 | 9.4 |
| Political measures of the Federal Council | 6.7 | 6.6 | 12.7 | 10.9 |
| Business as usual | 14.7 | 12.5 | 22.1 | 18.8 |
The reader will find more information about assumptions and parameters for the different scenarios in the chapters 7.4.1.1; 8.4.1.1 and 9.4.1.1 of PROGNOS 2012 [1].
References
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en/heated_surface.txt · Last modified: 2023/11/16 15:21 by 127.0.0.1
