The European Commission has taken a significant step to address the impact of digital technologies on the energy sector. Digitalisation is an enabler of the energy transition across the whole energy value chain, from generation and transport, to distribution, supply and consumption. Energy-efficient data centers and 5G Standalone networks are essential to achieving a low-carbon energy system. The system-wide digitalisation energy action plan aims to contribute to the EU energy policy objectives by supporting the development of a sustainable, (cyber)secure, transparent and competitive market for digital energy.