Optimal design for a hybrid microgrid-hydrogen storage facility in Saudi Arabia

Abstract

Background Sustainable development requires access to affordable, reliable, and efficient energy to lift billions of people out of poverty and improve their standard of living. The development of new and renewable forms of energy that emit less CO2 may not materialize quickly enough or at a price point that allows people to attain the standard of living they desire and deserve. As a result, a parallel path to sustainability must be developed that uses both renewable and clean carbon-based methods. Hybrid microgrids are promoted to solve various electrical and energy-related issues that incorporate renewable energy sources such as photovoltaics, wind, diesel generation, or a combination of these sources. Utilizing microgrids in electric power generation has several benefits including clean energy, increased grid stability, and reduced congestion. Despite these advantages, microgrids are not frequently deployed because of economic concerns. To address these financial concerns, it is necessary to explore the ideal configuration of microgrids based on the quantity, quality, and availability of sustainable energy sources used to install the microgrid and the optimal design of microgrid components. These considerations are reflected in net present value and levelized energy cost. Methods HOMER was used to simulate numerous system configurations and select the most feasible solution according to the net present value, levelizied cost of energy and hydrogen, operating cost, and renewable fraction. HOMER performed a repeated algorithm process to determine the most feasible system configuration and parameters with the least economic costs and highest benefits to achieve a practically feasible system configuration. Results This article aimed to construct a cost-effective microgrid system for Saudi Arabia's Yanbu city using five configurations using excess energy to generate hydrogen. The obtained results indicate that the optimal configuration for the specified area is a hybrid photovoltaic/wind/battery/generator/fuel cell/hydrogen electrolyzer microgrid with a net present value and levelized energy cost of $10.6 billion and $0.15/kWh. Conclusion With solar photovoltaic and wind generation costs declining, building electrolyzers in locations with excellent renewable resource conditions, such as Saudi Arabia, could become a low-cost hydrogen supply option, even when accounting for the transmission and distribution costs of transporting hydrogen from renewable resource locations to end-users. The optimum configuration can generate up to 32,132 tons of hydrogen per year (tH2/year), and 380,824 tons per year of CO2 emissions can be avoided.

Optimizing Renewable Energy Integration for Sustainable Fuel Production: A Techno-Economic Assessment of Dimethyl Ether Synthesis via a Hybrid Microgrid-Hydrogen System

“…Conversely, the necessity for short-term electricity storage emerges to manage transient peaks in energy demand and to extend the operational life of fuel cells by ensuring a steady hydrogen supply. This short-term solution is characterized by a smaller storage capacity but benefits from a rapid energy release capability [44].…”

“…indicates that the optimal setup for the specific site involves integrating solar, wind, battery, generator, fuel cell, and hydrogen electrolyzer elements. The ideal configuration has a net present value of USD 10.60 billion and a levelized energy cost of USD 0.15/kWh [44].…”

Renewable-Energy-Based Microgrid Design and Feasibility Analysis for King Saud University Campus, Riyadh

“…The utilization of solely renewable energy resources for energy generation is a better option for most locations in the world; however, the high costs of renewable systems make this option less suitable for places such as the Middle East, where fuel prices are much lower than in other areas and where the use of hybrid systems is a very viable option [10]. However, global warming has generated a considerable increase in temperature throughout the years, altering global climatic conditions.…”