For minimal energy consumption
Sustainable homes must carry the Energy Efficiency First principle as the principle is essential for homes to perform well on both sustainability and energy. Energy demand criteria must consider cost optimality as defined in the Energy Performance of Buildings Directive for both the homeowner and society.
- Energy requirements should primarily address the energy performance of the whole building.
- The home must have a low dependency on electrical air conditioning and complex building installations to increase robustness in periods of extreme weather, e.g. high temperatures.
- The energy supply must consider the local context and use of renewables at a cost optimal level.
- The Energy Efficiency First principle should always be applied. Efficiency in the energy supply is important to achieve sustainable energy supply.
- There should be an upper limit for how much energy efficiency of the building can be substituted by renewable energy to ensure the Energy Efficiency First principle.