Recently, the increasing demand for secure communication links in power transmission and the requirement for online monitoring of transmission lines have led to the extensive use of Optical Fiber Composite Overhead Ground Wire (OPGW) in 500 kV transmission systems. Typically, OPGW is grounded at every tower. Electromagnetic induction causes an induced electromotive force on the ground wire, which forms a current loop between the towers, resulting in induced currents and subsequent power losses. This research develops a 500 kV single-circuit transmission line model using standard tower types to examine the distribution of induced currents and ground currents along the OPGW. The study then analyzes the effects of grounding resistance, span, and conductor transposition on the induced current along the OPGW, the current into the earth, and induced power losses. The results indicate that the span and grounding resistance have a minimal impact on the induced power loss of the OPGW, while the OPGW resistance has a significant effect on the induced power loss.