Solar PV integration to any conventional power grid will impact the existing operational scheme, in some cases the PV integration will impact generation cost. Currently, the generation cost of PV determined by the Levelized Cost of Electricity, which omit the time series impact of intermittent power generation. The needs to calculate the total cost of PV implementation to the grid has been analyze by most of the electric utility company. With high target of PV integration to Jawa-Madura-Bali system, this total cost calculation will be calculated to show the real cost of PV as a whole generation cost. Based on the case study of Jawa-Madura-Bali in 2025 the total cost is 8.44 c$/kWh, which consists of LCOE, Grid Cost, balancing Cost, Backup Cost, and Utilization Effect.