Webinar – Assessing geothermal uncertainty with reverse enthalpy methodology, 7 November 2025
Focus on Geothermal webinar - The Reverse Enthalpy Method for Understanding Risk and Uncertainty in Geothermal Projects
Carlo Cariaga
3 Nov 2025
Join us on 7 November 2025 for a webinar on the Reverse Enthalpy Methodology, an innovative approach for assessing risk and uncertainty of geothermal projects.
As part of the regular Focus on Geothermal Webinar series – a partnership of Enerchange and ThinkGeoEnergy, we are proud to host Roberto Gambini of the University of Chieri-Pescara for a webinar on “The Reverse Enthalpy Method for Understanding Risk and Uncertainty in Geothermal Projects.” Further details are as follows:
Date: 7 November 2025
Time: 14:00 CET / 08:00 ET
Registration: Click here to register
Speaker: Roberto Gambini, Visiting Professor, University of Chieti-Pescara
A robust and transparent methodology for assessing risk and uncertainty is essential to guide sound investment and development decisions in geothermal projects. In this webinar, we present an innovative approach inspired by best practices from the hydrocarbon industry and specifically tailored to the complex realities of geothermal exploration and development. This methodology provides a consistent, auditable framework for quantifying uncertainty and evaluating the probability of success at each project stage, from early exploration to commercial operation.
The approach distinguishes three fundamental components of geothermal project risk:
- The geological probability of success assesses the reliability of the geological model and the presence of the key geological elements.
- The temperature threshold probability measures the likelihood that the reservoir fluid attains or exceeds the temperature required for the intended use of the resource.
- Finally, the commercial probability of success – calculated through the innovative Reverse Enthalpy Methodology (REM) – links subsurface performance to economic outcomes, estimating the probability of achieving a positive Net Present Value (NPV).
Roberto Gambini is a highly experienced technical and commercial manager with almost four decades of international experience in the geothermal and upstream energy sectors. Throughout his career, he has held senior leadership roles in major energy companies, including Enel Green Power (EGP), Enterprise Oil, Shell, OMV, and ENI. He currently serves as Co-CEO of GEN and as Visiting Professor of Geology of Energy Transition at the G. d’Annunzio University of Chieti-Pescara, Italy.
During his years at Enel Green Power, he was Head of the Global Geothermal Technological Line, responsible for Enel’s worldwide geothermal portfolio. In this role, he gained extensive expertise across all stages of geothermal project development and contributed to advancing technological and strategic innovation within the sector.
Earlier in his career, he served as Vice President for Exploration, Development, and Operations (EDO) in Enel’s Upstream Gas Division, as CEO and later Chairman of Enel Longanesi Development Srl, and as Enel Trade’s Country Manager in Algeria.
