A new low-energy house built in the last month in Molos Fthiotidas .According to the study KENAK the residence will have final energy consumption (per final use) per year, 4,10 kWh / m² for heating 7,10 kWh / m² for cooling and 3,70 kWh / m² for hot water. This means that the consumption of a specified low energy house of 152m2 time for cooling, heating and hot water is 2.265 kWh. Kwh with a value equal to 0,11 € / kWh (higher price for consumption by 1600 kWh / quarter) the cost of using the whole year will be 249 €.