# Blockchain Technology Applied in IoV Demand Response Management: A Systematic Literature Review
###### Abstract
Moreover, blockchain has the potential to give a considerable number of unique solutions in the majority of IoV applications [6]. For that reason, researchers have started developing IoV applications based on blockchain technology [29; 30; 31]. IoV built on blockchain has the capacity to boost a new ecosystem for the transportation and vehicular industries, allowing energy assets to be transferred and managed in a secure, transparent, verifiable and efficient manner [32; 33; 34]. Despite the fact that IoV is a relatively new technology, it is known that decentralized designs and processes are required to manage energy generation and consumption. Based on our research findings presented in [6], instability in energy production may jeopardize the energy supply security, leading to energy overload and a greatly distributed and continuously changing IoV topology. As a result, we concluded that more study into DR management, which uses blockchain technology to balance energy consumption and supply, was required. In this regard, blockchain appears to have the potential to be an innovative paradigm, addressing limitations in IoV, such as variability in energy production, energy overload and lack of incentive mechanisms [6]. Even though there are several studies that investigate the blockchain technology in the energy domain, there is limited information regarding how blockchain could be incorporated in DR management schemes designed for IoV. Therefore, there is a need to collect and critically analyze the existing literature in an attempt to highlight open issues. Thus, in this article, we conduct a SLR, investigating how blockchain technology assists the area of DRM in IoV. We contribute to the body of knowledge by offering a set of observations and research challenges on blockchain-based DRM in IoV, as the outcome of addressing the following SLR Question: \"_How can blockchain technology assist the area of demand response management in IoV-assisted smart grids?_\". To this end, our study makes the following contributions based on a systematic literature review methodology:  
1. Collects and filters the available literature, in an attempt to present current perspectives and research efforts on blockchain-enabled DRM in IoV. 2. Critically analyzes and reports the review's outcomes, in an attempt to discuss the various IoV DRM solutions and scenarios and provide a taxonomy of demand response programs. 3. Focuses on the perspectives and research efforts around the demand response management in the IoV, taking into consideration the application of blockchain technology. 4. Provides a comprehensive list of observations and research challenges of blockchain technology in the IoV DRM. The rest of this article is structured as follows. Section 2 provides a description of the followed research methodology of the current review, describing step by step the three stages of this articles, based on [PERSON]'s approach [PERSON] (1955); [PERSON] (1955), as well as features of the PRISMA methodology [PERSON] (1955). Then, Section 3 presents the main findings and the knowledge extracted during the review around current perspectives and research efforts on blockchain-enabled DRM in IoV, while in Section 4, we critically discuss their findings, providing their main observations, as well as some limitations and research gaps. Finally, Section 5 concludes the paper, highlights its contributions and makes recommendations for further research. Lastly, we would like to mention that we provide a detailed list of abbreviations, in an attempt to ease the understanding of the concepts presented in this article.