  The increasing global demand for electricity and the imperative of achieving
sustainable and net-zero energy solutions have underscored the importance of
exploring alternative sources. Enhanced Geothermal Systems (EGS) have emerged
as a promising avenue for renewable and sustainable energy production. However,
the development of EGS faces a significant challenge in drilling through hard
rock formations at high temperatures, necessitating specialized drilling
equipment and techniques. This study aims to investigate the current
state-of-the-art technology for drilling in hard rock formations under elevated
temperatures, specifically in the context of super-hot EGS development. It
involves a comprehensive review of previous projects and a meticulous analysis
of existing drilling technologies and techniques. Furthermore, a
techno-economic evaluation will be conducted to assess the feasibility of
super-hot EGS development in hard igneous formations, considering key factors
such as drilling performance, operational challenges, and material costs. The
outcomes of this study will enhance the understanding of the technical
challenges associated with super-hot EGS development and facilitate the design
of efficient and cost-effective drilling technologies for the geothermal energy
industry. By improving the drilling process in EGS development, the full
potential of geothermal energy can be harnessed as a viable and sustainable
energy source to meet the growing global demand for electricity.
