Limited Power of Attorney for Factorial Energy Inc.

This filing is an exhibit of a Limited Power of Attorney granted by Dr. Uwe Keller, a director of Factorial Energy Inc., to Siyu Huang, Richard Wei, and Jason Duva. The attorneys-in-fact are authorized to execute and file various SEC forms, including Forms 3, 4, and 5, as well as Schedules 13D and 13G, on behalf of Dr. Keller. This authorization pertains to his capacity as an officer, director, and/or securityholder of the Company. The power of attorney also grants the attorneys-in-fact the authority to perform any necessary acts to complete and file these forms, and to take any other actions they deem beneficial or legally required. The document clarifies that the attorneys-in-fact and the Company are not assuming Dr. Keller's responsibilities for compliance with Section 16 or Regulation 13D-G. Dr. Keller agrees to indemnify the attorneys-in-fact and the Company against any claims arising from false or misleading information he provides. The power of attorney remains in effect until Dr. Keller is no longer required to file such forms, or until earlier revoked.