Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Performance Analysis of a Diabatic CAES System Fuelled with Green Hydrogen

Version 1 : Received: 18 September 2023 / Approved: 19 September 2023 / Online: 19 September 2023 (04:36:46 CEST)

A peer-reviewed article of this Preprint also exists.

Migliari, L.; Micheletto, D.; Cocco, D. Performance Analysis of a Diabatic Compressed Air Energy Storage System Fueled with Green Hydrogen. Energies 2023, 16, 7023. Migliari, L.; Micheletto, D.; Cocco, D. Performance Analysis of a Diabatic Compressed Air Energy Storage System Fueled with Green Hydrogen. Energies 2023, 16, 7023.

Abstract

The integration of the increasing share of Renewable Energy Sources (RES) requires the availability of suitable energy storage systems to improve the grid flexibility, and Compressed Air Energy Storage (CAES) systems could be a promising option. In this study, a CO2-free Diabatic CAES system is proposed and analysed. The plant configuration is derived from a down-scaled version of the McIntosh diabatic CAES plant, where the natural gas is replaced with green hydrogen, produced on site by a Proton Exchange Membrane electrolyser powered by a Photovoltaic power plant. In this study, the components of the hydrogen production system are sized to maximize the Self-Consumption share of PV energy generation and the effect of the design parameters on the H2-CAES plant performance are analysed on a yearly basis. Moreover, a comparison between the use of natural gas and hydrogen in terms of energy consumption and CO2 emissions is discussed. The results show that the proposed hydrogen fuelled CAES can effectively match the generation profile and the yearly production of the natural gas fuelled plant by using all the PV energy production, while producing zero CO2 emissions.

Keywords

Compressed Air Energy Storage; Hydrogen; Photovoltaic; Energy Storage; Power flexibility; Ancillary services; Renewable; Energy Shift; Energy Independence; Energy Transition

Subject

Engineering, Energy and Fuel Technology

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