Another aim is to plan the appointed energy, concerning minimised running costs on one hand and a maximised independence on the other hand. The largest part of the energy saving measures can be achieved by the building construction and is furthermore accomplished in the easiest way. The application of current building technology enables benefit from the regenerative energies, such as the sun, the wind and many others. All savings models and necessary building costs will be calculated in the planning phase and so brought to the point where a decision to continue with the project is made. The necessary investment for such technology is mostly lower than generally expected. The expected saving is mostly higher than generally expected.