ADVANCED ENERGY INDUSTRIES INC (Form: SC 13G, Received: 02/11/2002 12:58:33)

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No. )*

Advanced Energy Industries, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

007973100

(CUSIP Number)

December 31, 2001

(Date of Event Which Requires Filing of This Statement)

Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:
[X] Rule 13d-1(b)
[ ] Rule 13d-1(c)
[ ] Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP: 007973100                                                Page 1 of 7

 1   NAMES OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
     Capital Research and Management Company
     95-1411037

 2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE
     INSTRUCTIONS)                                                 (a)

                                                                    (b)

 3   SEC USE ONLY




 4   CITIZENSHIP OR PLACE OF ORGANIZATION

     Delaware


              5   SOLE VOTING POWER

                  NONE


              6   SHARED VOTING POWER
 NUMBER OF
   SHARES
                  NONE
BENEFICIALL
 Y OWNED BY
              7   SOLE DISPOSITIVE POWER
    EACH
 REPORTING
                  1,772,000
   PERSON
   WITH:

              8   SHARED DISPOSITIVE POWER

                  NONE


 9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     1,772,000   Beneficial ownership disclaimed pursuant to Rule 13d-4


 10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
     (SEE INSTRUCTIONS)



 11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

     5.6%


 12  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

     IA




CUSIP: 007973100                                                Page 2 of 7

1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
SMALLCAP World Fund, Inc. 95-4253845

2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a)

(b)

3 SEC USE ONLY

4 CITIZENSHIP OR PLACE OF ORGANIZATION

Maryland

5 SOLE VOTING POWER

1,772,000

6 SHARED VOTING POWER NUMBER OF SHARES NONE BENEFICIALL Y OWNED BY
7 SOLE DISPOSITIVE POWER EACH REPORTING NONE PERSON WITH:

8 SHARED DISPOSITIVE POWER

NONE

9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

1,772,000

10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
(SEE INSTRUCTIONS)

11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

5.6%

12 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

CUSIP: 007973100                                                Page 3 of 7

SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549

Schedule 13G
Under the Securities Exchange Act of 1934

Amendment No.

Item 1(a) Name of issuer:
Advanced Energy Industries, Inc.

Item 1(b) Address of issuer's principal executive offices:
1625 Sharp Point Drive
Fort Collins, CO 80525

Item 2(a) Name of person(s) filing:
Capital Research and Management Company and SMALLCAP World Fund, Inc.

Item 2(b) Address or principal business office or, if none, residence:
333 South Hope Street
Los Angeles, CA 90071

Item 2(c) Citizenship: N/A

Item 2(d) Title of class of securities:
Common Stock

Item 2(e) CUSIP No.:
007973100

Item 3 If this statement is filed pursuant to sections 240.13d-1(b) or
240.13d-2(b) or (c), check whether the person filings is a:
(d) [X] Investment Company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).
(e) [X] An investment adviser in accordance with section 240.13d-1(b)(1)(ii)(E).

Item 4 Ownership

Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

See pages 2 and 3

(a) Amount beneficially owned:
(b) Percent of class:
(c) Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
(ii) Shared power to vote or to direct the vote:
(iii) Sole power to dispose or to direct the disposition of:
(iv) Shared power to dispose or to direct the disposition of:

CUSIP: 007973100                                                Page 4 of 7

Capital Research and Management Company, an investment adviser registered under Section 203 of the Investment Advisers Act of 1940 is deemed to be the beneficial owner of 1,772,000 shares or 5.6% of the 31,821,000 shares of Common Stock believed to be outstanding as a result of acting as investment adviser to various investment companies registered under Section 8 of the Investment Company Act of 1940.

SMALLCAP World Fund, Inc., an investment company registered under the Investment Company Act of 1940, which is advised by Capital Research and Management Company, is the beneficial owner of 1,772,000 shares or 5.6% of the 31,821,000 shares of Common Stock believed to be outstanding.

Item 5 Ownership of 5 percent or Less of a Class. If this statement is
being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than 5 percent of the class of securities, check the following: [ ]

Item 6 Ownership of More than 5% on Behalf of Another Person: N/A

Item 7 Identification and Classification of the Subsidiary Which Acquired
the Security Being Reported on By the Parent Holding Company or Control Person.: N/A

Item 8 Identification and Classification of Members of the Group: N/A

Item 9 Notice of Dissolution of Group: N/A

Item 10 Certification

By signing below, I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

Signature

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

        Date:          February 11, 2002


        Signature:     *Paul G. Haaga, Jr.

        Name/Title:    Paul G. Haaga, Jr., Executive Vice
                       President

                       Capital Research and Management Company



CUSIP: 007973100                                                Page 5 of 7

        Date:          February 11, 2002


        Signature:     *Chad L. Norton

        Name/Title:    Chad L. Norton, Secretary

                       SMALLCAP World Fund, Inc.




        *By    /s/ James P. Ryan

               James P. Ryan
               Attorney-in-fact

               Signed pursuant to a Power of Attorney dated January 9, 2002
               included as an Exhibit to Schedule 13G filed with the
               Securities and Exchange Commission by Capital Research and
               Management Company on January 10, 2002 with respect to
               HotJobs.Com, Ltd.





































CUSIP: 007973100                                                Page 6 of 7

                                 AGREEMENT

                              Los Angeles, CA
                             February 11, 2002


  Capital Research and Management Company ("CRMC") and SMALLCAP World
Fund, Inc. ("SCWF") hereby agree to file a joint statement on Schedule 13G
under the Securities Exchange Act of 1934 (the "Act") in connection with
their beneficial ownership of Common Stock issued by Advanced Energy
Industries, Inc.

  CRMC and SCWF state that they are each entitled to individually use
Schedule 13G pursuant to Rule 13d-1(c) of the Act.

  CRMC and SCWF are each responsible for the timely filing of the
statement and any amendments thereto, and for the completeness and accuracy
of the information concerning each of them contained therein but are not
responsible for the completeness or accuracy of the information concerning
the others.



                 CAPITAL RESEARCH AND MANAGEMENT COMPANY

                 BY:              *Paul G. Haaga, Jr.

                                   Paul G. Haaga, Jr., Executive
                                   Vice President
                                   Capital Research and Management
                                   Company


                 SMALLCAP WORLD FUND, INC.

                 BY:              *Chad L. Norton

                                   Chad L. Norton, Secretary
                                   SMALLCAP World Fund, Inc.


*By  /s/ James P. Ryan

     James P. Ryan
     Attorney-in-fact

     Signed pursuant to a Power of Attorney dated January 9, 2002 included
     as an Exhibit to Schedule 13G filed with the Securities and Exchange
     Commission by Capital Research and Management Company on January 10,
     2002 with respect to HotJobs.Com, Ltd.
















CUSIP: 007973100                                                Page 7 of 7