The element of energy harvesting in the wireless network is popular nowadays due to its effectiveness in terms of performance. The effectiveness can be seen in the way it can prolong the battery life as well as increase the performance of the network. In order to have a better understanding of how energy harvesting happens in a wireless network, this paper will present different algorithms and methods used for energy harvesting on the wireless network. The algorithms such as EHWA, SSPCA, NEEC, ANCAEE, QL-SEP and PSO are discussed and reviewed. The methods discussed and reviewed in this paper are spectrum and energy-harvesting technique, Fair Packet Ratio Distributed Computation Method, Power Feedback Control MPPT, TEH technique and Electric Field Energy Harvesting technique. The review on energy harvesting will also include simulation approaches, methods and the result of the different energy harvesting simulations. By conducting this paper review, it will help researchers to see the energy harvesting in different aspects of algorithms and methods.