**Exhibit 12.1**

 

**CERTIFICATION**

** **

I, Djalma Bastos de Morais, certify that:

 

1. I have reviewed this annual report on Form 20-F of CEMIG;

 

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

 

3. Based on my knowledge, the financial statements, and other financialinformation included in this report, fairly present in all material respectsthe financial condition, results of operations and cash flows of the registrantas of, and for, the periods presented in this report;

 

4. The Company’s other certifying officer and I are responsible forestablishing and maintaining disclosure controls and procedures (as defined inExchange Act Rules 13a-15(e) and 15d-15(e)) and internal control overfinancial reporting (as defined in Exchange Act Rules 13a-15(f) and15d-15(f)) for the Company and have:

 

a. designed suchdisclosure controls and procedures, or caused such disclosure controls andprocedures to be designed under our supervision, to ensure that materialinformation relating to the Company, including its consolidated subsidiaries,is made known to us by others within those entities, particularly during theperiod in which this report is being prepared;

 

b. designed such internalcontrol over financial reporting, or caused such internal control overfinancial reporting to be designed under our supervision, to provide reasonableassurance regarding the reliability of financial reporting and the preparationof financial statements for external purposes in accordance with generallyaccepted accounting principles;

 

c. evaluated theeffectiveness of the Company’s disclosure controls and procedures and presentedin this report our conclusions about the effectiveness of the disclosurecontrols and procedures, as of the end of the period covered by this reportbased on such evaluation; and

 

d. disclosed in thisreport any change in the Company’s internal control over financial reportingthat occurred during the period covered by the annual report that hasmaterially affected, or is reasonably likely to materially affect, the Company’sinternal control over financial reporting; and

 

5. The Company’s other certifying officer and I have disclosed, basedon our most recent evaluation of internal control over financial reporting, tothe Company’s auditors and the audit committee of the Company’s Board ofDirectors (or persons performing the equivalent functions):

 

a. all significantdeficiencies and material weaknesses in the design or operation of internalcontrol over financial reporting which are reasonably likely to adverselyaffect the Company’s ability to record, process, summarize and report financialinformation; and

 

b. any fraud, whether ornot material, that involves management or other employees who have asignificant role in the Company’s internal control over financial reporting.

 
|                      | /s/ Djalma Bastos de Morais     |
|---------------------------|---------------------------------|
|                      | Name: Djalma Bastos de Morais   |
|                      | Title: Chief Executive  Officer |
| Date: June 19,  2009 |                            |

 

A signed original of thiswritten statement required by Section 302 of the Sarbanes-Oxley Act of2002 has been provided to the Company and will be retained by the Company andfurnished to the Securities and Exchange Commission or its staff upon request.

 

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