Dataset and model outputs for hybrid battery-hydrogen energy storage reliability-cost assessment in Australia's National Electricity Market

This dataset supports the manuscript entitled “From Short-Duration Batteries to Seasonal Hydrogen: Reliability-Cost Trade-offs of Hybrid Energy Storage under High Renewable Penetration in Australia’s National Electricity Market”. The dataset contains processed AEMO regional demand data, CSIRO-AEMO GenCost-based technology cost assumptions, model-ready inputs, full hydrogen cost assumptions, and model output tables used to evaluate battery-only, hydrogen-only and hybrid battery-hydrogen storage systems across Australia’s National Electricity Market regions. The analysis covers New South Wales, Queensland, South Australia, Tasmania and Victoria for the 2024 modelling year under three renewable availability scenarios: VRE_120, VRE_150 and VRE_200. The repository includes final model-ready datasets, expanded-grid model outputs, full hydrogen cost sensitivity results, paper-ready summary tables, code/notebook files and documentation.