There is an increasing worldwide impetus towards a ‘nil emissions’ industry and energy production. While new technologies and materials have made the concept of renewable energy viable, there are still significant challenges in regards to the transition process in view of balancing the economic, security and environmental aspects. At the same time, the advent of the Internet of (Every)thing/s paradigm and the increasingly dynamic balance of power manifesting itself in various parts of the world have brought about the stringent need to evolve military defence doctrines, starting at the headquarters (command and control) level. As energy and national security clearly display a strong connection, it would be highly advisable to maintain this bond along the life of these two aspects, e.g. by evolving them observing similar principles and in a synchronised manner. This paper describes challenges faced by the two aspects and proposes a way forward that preserves and enhances the symbiosis necessary for a planned energy transition and effective national defence. Thus, while each region and nation will face specific geo-political issues, this paper initiates the process of elaborating a guiding framework (which can then be customised) meant to maintain the above-mentioned critical bond during the various possible transition stages, in a holistic and life cycle-based manner.