On April 28, 2022, the Ad-Hoc Technical Committee Meeting was held online. Marit Brommer, the TC Chairman of WGC2023, presided over the meeting. Over 20 TC members from the United States, Britain, New Zealand, Indonesia, etc, as well as experts and OC members from China，attended the meeting.

TC members had in-depth discussions on issues including abstract submission statistics, invitation to submit full paper, subdividing the R&D track and non-technical activities.

As of April 14, WGC2023 received more than 1600 abstracts, covering more than 50 topics， in which R&D track contributed the most, with a total of more than 1,000 abstracts. By April 28, 915 abstracts were accepted, 42 were required to be modified, and the remaining 682 abstracts were pending to be reviewed. Although the Call for Abstracts has ended, TC welcomes global geothermal experts to continue to submit high-quality papers to the congress through official TC mailbox (technicalprogramme@wgc2023.com). Next, TC will simultaneously carry out abstract review and invitation to submit full paper.