Technical - economic comparative analysis of energy storage systems equipped with a hydrogen generation installation

This paper presents the results of a technical-economic comparative analysis of two energy storage systems integrated with a wind farm: Power-to-Gas-to-Gas Grid (Case A) and Power-to-Gas-to-Power (Case B). The aim of the technical analysiswhich was to determine the power characteristics of particular installations forming the storage systems and to assess the impact of the nominal power of hydrogen generators on basic technical indicators, which can influence investment decision-making. The economic analysis included factors such as the impact of grants, the sale price of the product and the purchase price of electricity on the NPVR (Net Present Value Ratio), depending on the nominal power of hydrogen generators. The break-even unit investment costs were determined for both cases with nominal power of the hydrogen generators of 5 MW depending on the purchase price of electricity and the sale price of the main product.