- In recent years, traditional fossil fuels such as coal, oil, and natural gas have historically dominated various applications, but there has been a growing shift towards cleaner alternatives. Among these alternatives, hydrogen (H2) stands out as a highly promising substitute for all other conventional fuels. Today, hydrogen (H2) is actively taking on a significant role in displacing traditional fuel sources. The utilization of hydrogen in gas turbine (GT) power generation offers a significant advantage in terms of lower greenhouse gas emissions. The performance of hydrogen-based gas turbines is influenced by a range of variables, including ambient conditions (temperature and pressure), component efficiency, operational parameters, and other factors. Additionally, incorporating an intercooler into the gas turbine system yields several advantages, such as reducing compression work and maintaining power and efficiency. Many scholars and researchers have conducted comprehensive investigations into the components mentioned above within context of gas turbines (GTs). This study provides an extensive examination of the research conducted on hydrogen-powered gas turbine and intercooler with employed different methods and techniques, with a specific emphasis on the different case studies of a hydrogen gas turbine and intercooler. Moreover, this study not only examined the current state of research on hydrogen-powered gas turbine and intercooler but also covered its influence by offering the effective recommendations and insightful for guiding for future research in this field. © 2024 The Author(s)