Exhibit 99.4

Rule 13a-14(a) or Rule 15d-14(a) Certification - Chief Executive Officer

I, Barry V. Perry, certify that:

1. I have reviewed this amendment no. 1 to the annual report on Form 40-F of Fortis Inc.; and

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report.

/s/ Barry V. Perry    

Barry V. Perry

President and Chief Executive Officer

St. John’s, Canada

April 2, 2020