A Wireless Sensor Network (WSN) could be a wireless network consisting of spatially distributed autonomous devices that use sensors for watching and recording the physical conditions of the surroundings and organizing the collected information at a central location. Energy Consumption is a very difficult problem in a WSN because the batteries of wireless sensor nodes have very restricted capacities. Due to this problem, every solution elaborated for these networks should be aimed at minimizing the energy consumption. This paper provides the short overview of the energy consumption techniques and algorithms for calculating energy-efficient topologies for wireless sensor networks.