In hot climates, low'-cost solutions such as reflective roofs and walls, exterior shades, and low'-emissivity window' coatings and films can significantly reduce energy consumption for cooling (IEA, 2013). National and local government institutions, with technical assistance from university and research institutions, could support research on passive cooling designs, and provide vocational training for a new generation of installation technicians and technical assistance for contractors and construction companies. This is crucial to ensure the effectiveness of all the policy instruments. Such a training programme could also can increase job opportunities and promote green growth. Hai Phong is participating in the “Viet Nam Clean Energy Program: Energy Efficiency Promotion in the Building Sector”.