Measures of energy saving at the building of MIRC, in Metsovo are examined in this paper. The main aim of the paper is to highlight the particularly positive impacts of energy saving interventions on buildings found in mountainous settlements.

After estimating the energy efficiency of the building of MIRC, according to the Buildings Energy Efficiency Regulation, a set of energy saving interventions is formed. The technical characteristics of these interventions, as well as their costs are estimated. Moreover, an assessment of the economic performance of them is conducted and their environmental impacts are estimated.

It is proved that the economic and environmental performance of energy saving measures in mountainous areas is greater than in areas at lower altitudes, due to the increased energy demand of mountainous settlements. The use of traditional  structural materials, combined with sufficient insulation compose the basis for high energy performance  of buildings at mountainous settlements. Thus, the requirement for high energy efficiency can be compatible with retaining the vernacular architectural character of mountainous areas.