High energy standards for both newly constructed and existing buildings and climate-friendly heating, cooling and hot water supply systems are essential, especially in view of the current population growth and the high demand for housing. Here, Vienna is currently on track for attainment of the objectives. However, in view of the long investment and refurbishment cycles of buildings, appropriate courses must be set right now so that the long-term objectives for 2030 and 2050 can be attained.

The per capita energy consumption for heating, cooling and hot water has recently declined – due in part to population growth and the above-average warm climate of recent years. The share of renewables increased in this area from 3.5% in 2005 to 6.1% in 2014, that of district heating from 32.7% to 39.3%. The share of non-climate-friendly energy sources coal and oil has been greatly reduced in recent years, but not for gas. In addition to an intensification of efforts to increase the renovation rates and quality, phasing out of fossil heating systems in new buildings is required.

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