The paper aims to present recent guidelines to improve energetic behaviour and Renewable Energy in rehabilitation works of traditional rural architecture. The guidelines are referred in particular to the G.A.L (Local Actions Groups) of Mongioie and Langhe & Roero sites in North Italy. Those rural areas are involved in the Italian Tentative Lists, submitted for inscription on the Unesco’s World Heritage List. Both Guides can be configured as recommended standard instruments and were drawn up on the basis of study of the construction traditions and characteristics of the landscape in the reference area, which is largely mountainous and hilly. In both cases, the projects were carried out within the Plans for Local Development founded by Regional Rural Development Plan.