RT Journal Article T1 Current trends on green wireless sensor networks A1 López Ardao, José Carlos A1 Rodríguez Rubio, Raúl Fernando A1 Suárez González, Andrés A1 Rodríguez Pérez, Miguel A1 Sousa Vieira, Maria Estrella K1 3322.02 Generación de Energía K1 5312.05 Energía K1 3322.01 Distribución de la Energía AB The issue of energy balancing in Wireless Sensor Networks is a pivotal one, crucial in their deployment. This problem can be subdivided in three areas: (i) energy conservation techniques, usually implying minimizing the cost of communication at the nodes since it is known that the radio is the biggest consumer of the available energy; (ii) energy-harvesting techniques, converting energy from not full-time available environmental sources and usually storing it; and (iii) energy transfer techniques, sharing energy resources from one node (either specialized or not) to another one. In this article, we survey the main contributions in these three areas and identify the main trending topics in recent research. A discussion and some future directions are also included. PB Sensors SN 14248220 YR 2021 FD 2021-06-23 LK http://hdl.handle.net/11093/2550 UL http://hdl.handle.net/11093/2550 LA eng NO Sensors, 21(13): 4281 (2021) NO Ministerio de Ciencia, Innovación y Universidades | Ref. RED2018-102585-T DS Investigo RD 03-oct-2023