Hydrogels are three-dimensional networks of polymers with high water absorption capacity. They are formed by physical, ionic or chemical cross-linking of polymer chains. These materials are widely used as bioinks in bioprinting, due to their structural similarity to the native extracellular matrix. They also have applications in the food and cosmetics industry. In this work, the 3D printing of carbonaceous hydrogel electrodes for energy applications is proposed. The aim is to fabricate electrodes with the desired geometry, characterise their properties and evaluate their performance in the fabrication of supercapacitors. The hydrogel and carbon materials will be selected, the electrodes will be designed for 3D printing, the printing parameters will be optimised and the electrodes will be characterised (morphology, mechanical properties, electrical conductivity). Finally, the performance of the electrodes will be evaluated by forming a supercapacitor from a Swagelok cell. 3D printing of carbonaceous hydrogel electrodes opens up new possibilities for the development of more efficient and sustainable energy devices. The main advantages are: ∙ Hydrogels can be functionalised with different chemical groups to improve their conductivity, catalytic activity or energy storage capacity. ∙ Hydrogels can be made from biodegradable and biocompatible materials, making them a sustainable alternative to traditional electrodes. This study has the potential to revolutionise the field of energy technologies by offering a new generation of more efficient, sustainable and versatile electrodes.