The Energy Storage Summit Japan is an international trade fair with accompanying congress on the collection and storage of renewable energy, which is an issue that moves scientists and politicians worldwide. The conference is characterized by well-known speakers and participants. Here are discussed the latest developments in energy storage, but are also given critical insights into the market development and technology integration. The accompanying exhibition gives the opportunity to inform themselves about the latest technologies, developments, trends and solutions and also to conclude business transactions. Many companies and research institutions present at the fair their latest products and research results. Synergies can be drawn also from the sharing of best practices and from networking. The 5th edition of the Energy Storage Summit Japan in Tokyo took place on Tue., 08.12.2020.