This study explores the perceived social impact of the Tuirial Hydro Electric Project (THEP) on local communities in Mizoram. The Tuirial Hydro Electric Project, a major infrastructure development aimed at meeting the region's power demands, has significant implications for the socio-economic and cultural fabric of the surrounding villages. This study examines various social aspects, including transportation access, education, economic conditions, family and village unity, and social life, as perceived by local residents. The findings reveal a mixed impact of THEP, with positive effects noted in healthcare and infrastructure access, but limited economic improvement and minimal influence on family and village cohesion. The majority of respondents perceived THEP as having little relevance to their daily lives. These results highlight the importance of incorporating local perceptions into social impact assessments and suggest the need for more inclusive development strategies that ensure the equitable distribution of benefits and minimize adverse outcomes for local communities.