The Georgia Ports Authority (GPA) asked TBA to evaluate their long term strategy. GPA operates the Garden City container terminal in Savannah, North America’s busiest single-terminal container facility. The 1,200 acre terminal with a fleet of 27 Ship to Shore cranes and 116 RTGs, currently handles over 3.0 million TEU per year. TBA has build a simulation model of the entire Garden City Terminal, which has been used as a decision support tool.
During the last two years, the TBA simulation model has been used for a wide range of studies, including a long term capacity analysis, evaluation of improvement measures (yard strategy, equipment deployment, etc.), gate expansions plans and an evaluation of rail operations.
One specific and interesting aspect of the simulation studies focused on the implementation of full electric RTGs (E-RTGs). GPA is the first operator in North America to use E-RTGs, to improve their sustainability and to reduce costs in the long term. After positive evaluation, GPA is expanding the E-RTG fleet to 15 E-RTGs. GPA intends to electrify all RTGs by 2024 to become one of the most sustainable terminals worldwide. The TBA simulation model was used to assess the performance of the E- RTGs, including the time impact of (de)coupling to the conductor bar during E-RTG block and lane changes, compared to the existing fleet. Based on this outcome the simulation was used to determine the long term E-RTG fleet size requirements to support GPA current and future throughput targets with a complete and sustainable E-RTG fleet.