Integrated optimization of hybrid energy systems for efficient energy generation, carbon capture, and freshwater management

Wei Wei, Honglei Wang, Kui Xu, Chengnuo Wu and Tianlin Li

Energy, 2025, vol. 336, issue C

Abstract: This paper introduces an integrated optimization approach for managing electricity generation, gas production, and freshwater supply in hybrid energy systems, with a focus on minimizing diesel consumption, micro-hydro operation costs, electricity procurement, and optimizing freshwater surplus management and carbon capture efficiency. The system dynamics are modeled using advanced formulations for hydrogen and freshwater storage, accounting for efficiency losses and storage behaviors. Hydrogen production is linked with CO2 capture through the Sabatier reaction, creating a direct relationship between captured carbon and hydrogen supply for methanation. The model addresses uncertainties in renewable energy sources, such as wind and solar power, using stochastic modeling. Wind turbine generation depends on varying wind speeds, while photovoltaic systems are influenced by fluctuations in solar irradiance and temperature. Diesel engine fuel consumption is modeled using piecewise polynomial approximations for accuracy. Additionally, the approach incorporates dynamic water management for micro-hydro plants, considering variations in reservoir volume and hydraulic head to ensure optimal power production without operational fluctuations. The optimization framework enhances the overall efficiency of hybrid energy systems by integrating renewable energy sources, hydrogen production, carbon capture, and freshwater management. Simulation results demonstrate its effectiveness in reducing operational costs and improving sustainability in energy systems.

Keywords: Energy optimization; Hybrid systems; Integrated modeling; Renewable energy; Water management (search for similar items in EconPapers)
Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544225041325
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:336:y:2025:i:c:s0360544225041325

DOI: 10.1016/j.energy.2025.138490

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().