Exhibit 32.2 – Certification of Chief Financial Officer

(Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002)

In connection with the Annual Report of Graphene & Solar Technologies Limited (the “Company”) on Form 10-K/A for the fiscal year ended September 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, David Halstead, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: March 18, 2026 
By: /s/ David Halstead
Name: David Halstead
Title: Chief Financial Officer and Director