The analysis of the Romanian mountain areas highlights the complexity of the monetary and ecological challenges confronted with the aid of mountain areas, characterized by means of problems in the use of agricultural land due to climatic, geological, and slope situations. Mountain areas are considered deprived, their ecological fragility requires specific improvement measures. The exodus of young human beings and the poverty, related to unsustainable aid exploitation, positioned extra pressure on those communities. The proposed study offers a case look at mountain regions in Romania, with a special cognizance of the European Union structural funds intended for the improvement of those regions between 2014 and 2020. This observation compares the effect of European structural finances on the development of Romania’s mountain regions between 2014 and 2020, specializing in reading PNDR measures mainly carried out within the mountain areas. The unique measures that had been targeted for mountain regions at some point in that period, such as the finances allotted, the projects selected and shrunk, the bills made, and the consequences of those measures are mentioned within the take a look at. Specific examples and relevant character indicators are presented to guide the achievements in the improvement of mountain regions and applicable guidelines. The measures analyzed encompass investments in farms, the modernization of processing and marketing capacities, as well as support for small family farms. The study used monetary and bodily statistics to evaluate the effect of these measures, providing comparative analyses at country-wide and mountain-particular stages.

The European Union’s transition to climate neutrality by 2050 requires measurable reductions in energy consumption and greenhouse gas emissions, especially in territories characterized by geographical constraints, such as mountainous regions. The study analyzes how European funding guidelines are translated into concrete technical interventions for public buildings in mountainous areas of Romania, using a representative case study from Rodna, Bistrița-Năsăud County. The methodology is based on the national energy performance calculation framework (Mc 001/2022), harmonized with Directive 2010/31/EU and aligned with the EN ISO 52016-1 framework, while maintaining compatibility with the quasi-steady-state methodology implemented in MC 001/2022, and includes the assessment of compliance with the “Do No Significant Harm” (DNSH) principle also. The integrated energy rehabilitation of the analyzed building led to reductions in final energy consumption of 30–45%, primary energy consumption of 40–45%, and operational CO₂ emissions of 45–50%. The integration of renewable energy sources increased their share to approximately 35% of the building’s energy mix. The estimated annual reduction of 40–45 tons of CO₂ highlights the direct climate impact of investments financed from European funds. The results confirm that European funding instruments function not only as financial mechanisms, but also as governance instruments capable of steering the transition towards a low-emission construction sector in vulnerable mountain regions.

Sustainable investments in construction are essential for the development of communities and for reducing environmental impacts. This study analyzes two scenarios: rehabilitation of an existing building and construction of a new NZEB-compliant building, based on a life cycle cost–benefit analysis. The results show that both scenarios generate negative Net Present Values (NPVs) due to the social nature of the project, but the new NZEB building presents superior performance (NPV: USD –2.61 million vs. USD –3.05 million for rehabilitation) and lower operational costs (USD 1.49 million vs. USD 1.92 million over 30 years). Key financial indicators (IRR, CBR), sensitivity analysis, and discount rate variation support the conclusion that the NZEB scenario ensures greater economic resilience. This study highlights the relevance of extended LCCBA in guiding sustainable investment decisions in social infrastructure.