This chapter explores the concept of energy exchange as a fundamental aspect of unity interactions. It presents a conceptual framework showing how people use and share material, cognitive, and affective energy within their environments. The chapter introduces key theoretical constructs, including Energy State Tolerance Region (ESTR), Energy State Upgrade Region (ESUR), and Energy State Motivational Envelope (ESME) to explain how needs, desires, and motivations influence energy exchange patterns. A conceptual mathematical expression for Wilful Energising Investment (WENI) is proposed to evaluate how entities purposefully employ their energy for the benefit or detriment of others. The framework also identifies three types of energy actors: sponsors, antagonists, and exchangers, based on their actions and motivations. The chapter acknowledges the complexity of energy exchange dynamics by examining controversial cases where the same energy investment can yield different outcomes across proximal and distant environments. Professionals can use this model to better understand energy exchange, considering the context and timing.