Article: Energy, exergy, environmental and economic investigation of a SOFC-based hybrid power generation system Journal: International Journal of Exergy (IJEX) 2026 Vol.50 No.2 pp.133 - 146 Abstract: This work simultaneously employs the three contemporary power generation technologies in a single power generation system. The current study created a hybrid power plant that concurrently uses a gas turbine (GT), solid oxide fuel cell (SOFC), and transcritical CO2 cycle. Exergy, energy, environmental and economic (4E) analysis was performed numerically. The results showed that the proposed hybrid plant performed 7.50% better thermodynamically than that of the traditional SOFC-GT system. However, there was a 6.95% decrease in CO2 emissions per MWh of power output and overall cost of the hybrid plant went up by 6.20% in proposed plant. Inderscience Publishers - linking academia, business and industry through research

Title: Energy, exergy, environmental and economic investigation of a SOFC-based hybrid power generation system

Authors: Yunis Khan; Aftab Anjum; Shashi Gandhar; Abhishek Gandhar; P.M.G. Bashir Asdaque; Sukritindra Soni; Rohit Kumar Singh Gautam

Addresses: Department of Mechanical Engineering, Indian Institute of Technology (ISM), Dhanbad, Jharkhand, India ' Mechanical Engineering Department, Kameshwar Narayan Singh Government Polytechnic Samastipur, Bihar, India ' Electrical and Electronics Engineering Department, Bharati Vidyapeeth College of Engineering, New Delhi, India ' Electrical and Electronics Engineering Department, Bharati Vidyapeeth College of Engineering, New Delhi, India ' Department of Mechanical Engineering, Dayananda Sagar University, Banglore, India ' Department of Mechanical Engineering, G.H. Patel College of Engineering and Technology, Gujarat, India ' Department of Mechanical Engineering, Teerthanker Mahaveer University, Moradabad, 244001, India

Abstract: This work simultaneously employs the three contemporary power generation technologies in a single power generation system. The current study created a hybrid power plant that concurrently uses a gas turbine (GT), solid oxide fuel cell (SOFC), and transcritical CO₂ cycle. Exergy, energy, environmental and economic (4E) analysis was performed numerically. The results showed that the proposed hybrid plant performed 7.50% better thermodynamically than that of the traditional SOFC-GT system. However, there was a 6.95% decrease in CO₂ emissions per MWh of power output and overall cost of the hybrid plant went up by 6.20% in proposed plant.

Keywords: solid oxide fuel cell; SOFC; transcritical CO₂ cycle; hybrid energy system; environmental analysis; thermo-economic analysis; gas turbine; GT.

DOI: 10.1504/IJEX.2026.154495

International Journal of Exergy, 2026 Vol.50 No.2, pp.133 - 146

Received: 31 Oct 2025
Accepted: 01 Feb 2026
Published online: 30 Jun 2026 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article

Title: Energy, exergy, environmental and economic investigation of a SOFC-based hybrid power generation system

Keep up-to-date