Several routing protocols have been proposed to maximize the sensor networks lifetime. However, most of these solutions try to find an energy efficient path and don't account for energy consumption balancing in sensor network. This usually leads to network partitioning. The aim of this paper is to evaluate, analyze and compare three routing protocols (EAR, FEAR and BEER) that balance energy consumption, through a mathematical model and simulations. Obtained results show that FEAR enables fair energy efficient use and enhances the sensor network lifetime more than EAR. BEER outperforms the two protocols and balances energy consumption between sensor nodes better than FEAR and EAR.