Blockchains or distributed ledgers are an emerging technology that has drawn considerable interest from energy supply firms, startups, technology developers, financial institutions, national governments and the aca. Energy systems are undergoing rapid changes to accommodate the. 2.1. Definition and overview of fundamental principlesA blockchain is a digital data structure, a shared and distributed database that contains a contin. Energy sector decision-makers and utility companies have asserted that blockchains could possibly offer solutions to challenges in the energy industry. The German Energy. Industry stakeholders, utility companies and energy decision-makers have taken great interest in blockchain technologies. In this section, we provide a general overview on current use of blo. The blockchain projects and research initiatives reviewed in this work show that blockchains are a promising technology for a wide area of services and use cases in the energy sector.