Promotion of Hydrogen Production through a Shared Multi Energy System in a Residential Microgrid

The promotion of green hydrogen as a clean and sustainable energy carrier has garnered significant attention in recent years due to its potential to mitigate climate change and reduce dependence on fossil fuels. This paper presents a novel approach to promote hydrogen production through a shared Multi-energy System (MES) within residential microgrids. The proposed system leverages excess rooftop photovoltaic (PV) production to generate hydrogen using an electrolyzer and a Hydrogen Storage System (HSS). By adopting an optimization model, the primary objective is to maximize overall household profit by considering their optimal energy trading with the grid and neighborhood. To promote participation in green hydrogen production, an energy credit mechanism is introduced, allowing households to use credited energy during peak hours to reduce energy costs based on their participation in hydrogen production. This mechanism not only promotes the financial value of rooftop PVs but also incentivizes households to contribute to hydrogen production. Drawing from various studies in smart energy systems, the concept of a MES has been successfully implemented in different contexts. Building on this foundation, our paper introduces a shared MES tailored specifically for residential hydrogen production. In addition to proposing this innovative approach, the paper contributes to the existing literature by introducing the concept of energy credits as a reward mechanism for household contributions to hydrogen production. The results of implementing the proposed model on a case study for 40 houses show that the contribution of households to hydrogen production is significant, while their profit has been increased by benefiting from credited energy.