Energy efficient homes of the future will beearn money for their owners. Although why the "future"? The house that we will show you today is already built and it consumes half as much energy as ordinary houses. At the end of this winter, an active "energy house" was presented in the Minsk region, which almost doubled the overall energy consumption (compared to the current ones in Byelorussia norms) - 52 kW * h / m2. 
For reference. Active at home with a positive energy balance. In other words, such houses themselves produce energy for their own needs. The creation of the project was made by the specialists of Rockwool. In addition to consulting on the conduct of heat and sound protection measures, the company also acted as a supplier of stone wool - one of the most energy-efficient thermal insulation materials. 
As an external insulation of the housematerial thickness of 2.5 cm was used, for the roof the thickness of the layer was increased to 3 cm. In addition, the internal floors and floors were subjected to additional heat and sound insulation. As a result, rock wool from Rockwool helped reduce heat loss to a minimum, to provide almost complete sound insulation and comfortable indoor microclimate. 
The total area of the house is rather big - almost 190 sq. m.However, truly impressive parameters were achieved not only with the help of stone wool and high-quality thermal insulation - the ultra-modern energy-saving Velux windows also played a role. Thanks to a special film coating that reflects infrared radiation, double-glazed windows literally receive energy from nature (after all, as you know, infrared radiation "carries away" heat). 
Another effective development that allowsto draw energy from the environment, became a heat pump, which gives a magical opportunity to receive up to four kilowatts of heat from each invested kilowatt of electricity. 
And, of course, this project was not without, thanks to which the owners of advanced housing will be able to generate up to 5,000 kWh of electricity every year. Completely free, of course. 
What to do with the surplus of electricity? The company Rockwool offers to sell it to a common network, with the prospect, after some time, to fully pay back the cost of the house. Incidentally, this very value of the house is only 15% higher than the price of a conventional suburban building. And this is already with the finish! In general, not a house, but a dream!
Anti-crisis house: energy efficient cottage in Belarus
