As shown in Fig. 6, the energy consumption for heating in Scenario 1 is slightly higher than the other scenarios. However, this value doesn’t have an obvious decrement with the impact of green vegetation. In the warmer season, from April to October, where heating is not a functional requirement for the building comfort,the energy consumption values of the 3 scenarios are almost the same. The highest difference appears in December and January where 275.98 and 292.24 GJ energy were consumed respectively. In the same months, 0.6 and 2.1% of the average energy savings were achieved by fully covering the roof and walls with green vegetation respectively