UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D. C. 20549







FORM 10-Q/A

Amendment No. 1



|x | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
|- | ------------------------------------------------------------------

| | EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2007
| | ------------------------------------------------------------------

OR



| ̈ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
|- | -------------------------------------------------------------------

| | EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM  TO
| | -------------------------------------------------------







|                       |  |                         |  |                       |  |                                 
|---------------------- |  | ----------------------- |  | --------------------- |  | --------------------------------
|Commission File Number |  | Registrant              |  | State ofIncorporation |  | IRS EmployerIdentificationNumber
|1-7810                 |  | Energen Corporation     |  | Alabama               |  | 63-0757759                      
|2-38960                |  | Alabama Gas Corporation |  | Alabama               |  | 63-0022000                      

605 Richard Arrington Jr. Boulevard North

Birmingham, Alabama 35203-2707

Telephone Number 205/326-2700

http://www.energen.com

Alabama Gas Corporation, a wholly owned subsidiary of Energen Corporation, meets the conditions set forth in General Instruction H(1)(a) and (b) of Form 10-Q and is therefore filing this
Form with reduced disclosure format pursuant to General Instruction H(2).

Indicate by a check mark whether the registrants
(1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities and Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrants were required to file such reports), and
(2) have been subject to such filing requirements for the past 90 days. YES  x    NO   ̈

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer (as defined in Rule 12b-2
of the Act).



|                        |  |                            |  |                      |  |                         
|----------------------- |  | -------------------------- |  | -------------------- |  | ------------------------
|Energen Corporation     |  | Large accelerated filer  x |  | Accelerated filer   ̈ |  | Non-accelerated filer   ̈
|Alabama Gas Corporation |  | Large accelerated filer   ̈ |  | Accelerated filer   ̈ |  | Non-accelerated filer  x

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange
Act).



|                        |  |        |  |      
|----------------------- |  | ------ |  | -----
|Energen Corporation     |  | YES   ̈ |  | NO  x
|Alabama Gas Corporation |  | YES   ̈ |  | NO  x

Indicate the number of shares outstanding of each of the issuers classes of common stock, as of
May 1, 2007



|                        |  |                 |  |                  
|----------------------- |  | --------------- |  | -----------------
|Energen Corporation     |  | $0.01 par value |  | 71,732,070 shares
|Alabama Gas Corporation |  | $0.01 par value |  | 1,972,052 shares 









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This amendment to the Form 10-Q of Energen Corporation and Alabama Gas Corporation (Alagasco) for the
quarterly period ended March 31, 2007 is to provide separate certifications for Energen and Alagasco and to amend certain language with respect to Alagasco to conform to Item 601(b)(31) of Regulation S-K.

PART II. OTHER INFORMATION





|ITEM 6. | EXHIBITS
|------- | --------

31(a)Section 302
Certificate required by Rule 13a-14(a) or Rule 15d-14(a)

31(b)Section 302 Certificate required by Rule 13a-14(a) or Rule 15d-14(a)

31(c)Section 302 Certificate required by Rule 13a-14(a) or Rule 15d-14(a)

31(d)Section 302 Certificate required by Rule 13a-14(a) or Rule 15d-14(a)





---

SIGNATURES

Pursuant to the requirements of the Securities and Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.



|               |  |  |  |                                             |  |                                                  
|-------------- |  |  |  | ------------------------------------------- |  | -------------------------------------------------
|               |  |  |  | ENERGEN CORPORATION ALABAMA GAS CORPORATION
|               |  |  | 
|March 24, 2008 |  |  |  | By                                          |  | /s/ James T. McManus II                          
|               |  |  |  |                                             |  | James T. McManus II                              
|               |  |  |  |                                             |  | Chairman, Chief Executive Officer and            
|               |  |  |  |                                             |  | President of Energen Corporation;                
|               |  |  |  |                                             |  | Chairman and Chief Executive Officer of          
|               |  |  |  |                                             |  | Alabama Gas Corporation                          
|               |  |  | 
|March 24, 2008 |  |  |  | By                                          |  | /s/ Charles W. Porter, Jr.                       
|               |  |  |  |                                             |  | Charles W. Porter, Jr.                           
|               |  |  |  |                                             |  | Vice President, Chief Financial Officer          
|               |  |  |  |                                             |  | and Treasurer of Energen Corporation             
|               |  |  |  |                                             |  | and Alabama Gas Corporation                      
|               |  |  | 
|March 24, 2008 |  |  |  | By                                          |  | /s/ Paula H. Rushing                             
|               |  |  |  |                                             |  | Paula H. Rushing                                 
|               |  |  |  |                                             |  | Vice President-Finance of Alabama Gas Corporation