Abstract: The Great Britain exiting the European Union in 2020 through a referendum made significant impressions on geopolitical integration and partnerships. Brexit fueled heated discussions over the future of both the remaining Union members and the United Kingdom as well; the question of energy sustainability remains unsettled. The focus of common market policies have shifted from the shared economic advantages of open trade policies to geopolitical considerations, which represents the numerous influences of Brexit. An essential part of the study is the external environment influencing corporate operations between the United Kingdom and the European Union under the new geopolitical environment. Few studies, however, have focused on an in depth research on Brexit, considering both the internal and external energy sustainability of the European Union. The data gathered revealed the tremendous influences of geopolitical frictions after Brexit on numerous areas of green energy co-operations. The paper identified key areas which have suffered significant impact from Brexit and is a great concern for policy and decision makers. The study revealed events and some trends that needed fundamental inter-connectedness between the UK and the EU for mutual economic progress and stability.Abstract: The Great Britain exiting the European Union in 2020 through a referendum made significant impressions on geopolitical integration and partnerships. Brexit fueled heated discussions over the future of both the remaining Union members and the United Kingdom as well; the question of energy sustainability remains unsettled. The focus of common market ...Show More