A comprehensive review of vehicle-to-grid integration in electric vehicles: Powering the future

[Display omitted] •A comprehensive bibliometric review of 16,457 V2G articles from 1970 to 2023.•Analysis of leading countries, institutions, and global research collaborations.•Thematic evolution from “secondary batteries” to “smart grid” and “greenhouse gases.”•Identification of knowledge gaps and emerging research directions in V2G.•Strategic insights for researchers, policymakers, and industry stakeholders on V2G integration. The studies have focused on a bibliometric review of electric vehicle (EV) integration with the grid. It follows a methodical procedure using a pre-established search strategy to examine and analyze previous work on vehicle-to-grid (V2G). There were 21,535 articles found initially focusing on green urban transit. Following the last cleaning, editing, and refining round, 16,457 articles remained for evaluation. The literature written in English is one of the constraints that has been acknowledged. The review looks at data from 1970 to 2023, revealing that the number of research articles about V2G has increased significantly, especially after 2000. The collaborative landscape is shown by a network that includes the top ten organizations in the world. Citation analysis of nations indicates that the United States and China are the leading countries in research on V2G technology. Notable publications and organizations are highlighted in the evaluations of institutions and journals. China showcases its numerous connections through country collaboration networks. Research subjects have evolved, shifting from older ones like “secondary batteries” and “electric vehicles” to newer ones like “charging (batteries),” “smart grid,” and “greenhouse gases.” This shift is evident when one looks at the keyword data thematically. The comprehensive overview of V2G research trends and collaborations, identification of gaps, suggestion of future paths, and overall value as a resource will be an indispensable tool for EV integration researchers, legislators, and industry stakeholders and its contribution to infrastructure.