Attached files
| file | filename |
|---|---|
| 10-K/A - FORM 10-K/A - TUCSON ELECTRIC POWER CO | c13532e10vkza.htm |
| EX-23 - EX-23 - TUCSON ELECTRIC POWER CO | c13532exv23.htm |
| EX-31.C - EX-31.C - TUCSON ELECTRIC POWER CO | c13532exv31wc.htm |
| EX-31.B - EX-31.B - TUCSON ELECTRIC POWER CO | c13532exv31wb.htm |
| EX-31.D - EX-31.D - TUCSON ELECTRIC POWER CO | c13532exv31wd.htm |
Exhibit 31(a)
CERTIFICATION
Pursuant to Section 302 of the Sarbanes-Oxley Act
Pursuant to Section 302 of the Sarbanes-Oxley Act
I, Paul J. Bonavia, certify that:
| 1. | I have reviewed this annual report on Form 10-K/A for the year ended December 31, 2010, of UniSource Energy Corporation; 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. |
| Date: March 2, 2011 | /s/ Paul J. Bonavia | |||
| Paul J. Bonavia | ||||
| Chairman, President and Chief Executive Officer | ||||