I found that to be an effective energy-saving buildings will need to be added to the value of watdukrop in the construction of buildings for research, what is the payback period.
To find the building energy efficiency will have to increase in the construction cost of the building by the research have to take into account the payback period.
It was found that if want to building energy efficiency will have to increase the construction cost in terms of material of frame building by the research has considered the payback period.