## 5 Conclusions
impact their disposal in the environment. It is worth mentioning that the impacts that this technology may have on battery life are not yet clear (discussed in item 5) [22; 27]. Regarding the social dimension, further studies are still required to better understand how the technology can impact society and, thus, its advantages and disadvantages [7; 8; 9; 10; 16; 17; 18; 19; 20; 21; 22; 27; 28; 29]. Social barriers to the penetration of V2G become an important aspect; problems such as high cost, connection to the power grid and problems with cybersecurity are points that require greater attention in future research. Finally, regarding the political dimension, it can be considered that there is still little material covering regulation of the technology. The implementation of regulation in a market that contemplates the distribution, transmission and generation of electricity is a highly complex activity to be carried out in a short time. The creation of norms of responsibility for the use and interconnection of this technology with the electricity network becomes essential for the penetration of V2G in the electricity market. The regulations and standards that should be created to characterize the use of energy storage must be considered an integral part of the regulation and standardization for the use and introduction of V2G technology in society. Although the adoption of these new technologies is initially challenging, they bring evolution to society and to the country. Investments, job creation, specialized labor, environmental improvements, etc., are points that culminate in the development of the HDI, making it an important variable in the growth of social and governmental actions. Having Santos as a pilot city, the insertion of this type of technology can be considered to have a long way to go. There is a high initial price to be paid due to the \"technological novelty\" issue and the necessary adaptations in all areas of society, but it will be extremely important and rewarding in the future of energy sustainability, considering technical, social, political, and environmental development. Regarding electric vehicles, they are estimated to account for at least 40% of new worldwide sales by 2040, if this high percentage is reached mainly due to the quest (through environmental laws and regulations) for stabilizing the concentration of greenhouse gases at 450 ppm [30]. With the increase in the circulation of electric vehicles, the growing electricity demand is inevitable; therefore, technologies that can store and redistribute electricity will be inevitable for the future [31]. In conclusion, this paper addressed most of the impacts of V2G in different areas. Currently, environmental and technical-economic dimension data are less complicated to obtain and/or to estimate. Regarding the social and political dimensions, further research in these two areas is still needed, especially regarding laws, technical and market regulations, considering the role of consumers and energy companies in the negotiations for the purchase and sale of electricity inserted into the distribution network with this technology; there should also be an increase in the benefits and losses for society. However, this lack of accurate information in these areas is completely understandable and acceptable given the novelty of the V2G technology. [PERSON], [PERSON], [PERSON] and [PERSON] contributed to the whole article. All authors have read and agreed to the published version of the manuscript. This research received no external funding. **Institutional Review Board Statement**: Not applicable. **Informed Consent Statement**: Not applicable. **Data Availability Statement**: Not applicable. **Conflicts of Interest**: The authors declare no conflict of interest.