The recent World Climate Summit – COP 24 – in Poland has focused on the need to reduce greenhouse gases and discussed strategies to achieve climate targets. One of the possible ‘decarbonising’ options, i.e. reducing CO2 emissions, is a move to electrotechnical solutions. Copper is the material of choice for electrical applications, and for the transition to a sustainable supply. Electrical heating technologies such as induction, resistance, infrared, arc and high frequency as well as microwave heating are already available today. Although promising innovative technologies such as laser, electron beam and plasma arc heating are still in the development phase, they offer forward-looking approaches.