(As filed June 26, 2003)

                                                            File No. 073-00091




                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   FORM U-57

                 NOTIFICATION OF FOREIGN UTILITY COMPANY STATUS

                        Filed under Section 33(a) of the
             Public Utility Holding Company Act of 1935, as amended

                  Tai An Xin Wen Peak Heat and Power Co., Ltd.
                                  Xintai City
                               Shandong Province
                           People's Republic of China

               -------------------------------------------------
                      (Name of foreign utility companies)

                           Alliant Energy Corporation
                            4902 North Biltmore Lane
                            Madison, Wisconsin 53718
                ------------------------------------------------
                   (Name of filing company if filed on behalf
                         of a foreign utility company)

The  Commission  is requested to mail copies of all  communications  relating to
this Notification to:


       Barbara J. Swan                 William T. Baker, Jr., Esq.
       EVP & General Counsel           Thelen, Reid & Priest LLP
       Alliant Energy Corporation      40 West 57th Street
       4902 North Biltmore Lane        New York, NY 10019
       Madison, Wisconsin 53718







ITEM 1. Name of the  entity(ies) on whose behalf foreign  utility company status
     is claimed,  its (their) business  address(es),  and a brief description of
     the facilities used for the generation,  transmission,  and distribution of
     electric  energy for sale or for the  distribution  at retail of natural or
     manufactured  gas.  Identity of each person that holds five percent (5%) or
     more of any class of voting securities of the foreign utility  company(ies)
     and description of the amount and nature of the interest.

                  Tai An Xin Wen Peak Heat and Power Co., Ltd.
                                  Xintai City
                               Shandong Province
                           People's Republic of China

     Alliant Energy Corporation  ("Alliant Energy"), a Wisconsin corporation and
a registered  holding  company under the Public Utility  Holding  Company Act of
1935 (the "1935 Act"), as amended,  acting on behalf of Tai An Xin Wen Peak Heat
and Power Co., Ltd.  ("Xin Wen"),  hereby  notifies the  Securities and Exchange
Commission  (the  "Commission")  that Xin Wen is, and hereby claims status as, a
foreign  utility  company  ("FUCO") within the meaning of Section 33 of the 1935
Act.

     Grandelight Holding Limited ("Grandelight") is a wholly owned subsidiary of
Alliant Energy International,  Inc., a wholly-owned subsidiary of Alliant Energy
Resources,  Inc.  and an indirect  wholly-owned  subsidiary  of Alliant  Energy.
Grandelight  currently  owns  approximately  93.5%  of  the  outstanding  voting
securities of Peak Pacific Investment Co., Ltd ("Peak"), a Singapore corporation
engaged in the  development,  management  and  operation  of power plants in the
People's   Republic  of  China   ("PRC")   under   Sino-foreign   joint  venture
arrangements.  Peak  participates in nine (9) cooperative  joint ventures in the
PRC with PRC enterprise legal persons.1


     Peak now has entered into a Cooperative  Joint Venture  Agreement  with Xin
Wen Mining Group Company Ltd. ("XWMG") organized to, among other things, develop
and operate co-generation steam and power or stand-alone power facilities and to
enhance  the  economic  efficiency  of the  generation  of energy from the power
plants.  In the future,  Peak may continue to participate in other similar joint
venture enterprises in the PRC.



----------
  1    See Form  U-57  filed  on July 30,  1999 by  Alliant  Energy  in which it
claimed  "foreign  utility  company"  status on  behalf of five (5)  development
projects  of Peak  three  (3) of which  continue  to be  active  Henan  Yongfeng
Electric Power Co. Ltd.,  Henan Anfeng Electric Power Co. Ltd., and Shijiazhuang
Chengfeng  Cogen Co. Ltd.;  Form U-57 filed on March 21, 2001 by Alliant  Energy
claiming "foreign utility company" status on behalf of Hebei Wuan Peak Coal Heat
and Power  Co.,  Ltd.;  Form U-57  filed on  August  1, 2001 by  Alliant  Energy
claiming  "foreign  utility company" status on behalf of Weifang Ocean Peak Heat
and Power Co.,  Ltd. (no longer  active);  Form U-57 filed on August 28, 2001 by
Alliant Energy claiming  "foreign  utility  company" status on behalf of Zouping
Peak CHP Co.,  Ltd.;  Form U-57 filed on  October  30,  2001 by  Alliant  Energy
claiming "foreign utility company" status on behalf of Luannan Peak Heat & Power
Company Ltd. and Luannan Peak Second Heat & Power  Company Ltd;  Form U-57 files
on January 03, 2003 by Alliant Energy claiming  "foreign utility company" status
on behalf of Tai An Hua Feng Heat and Power Company Limited;  and Xin Wen as set
forth in this filing.




      Peak will own an interest in the following operating joint venture:


Tai An Xin Wen Peak Heat and Power Co.,  Ltd.  ("Xin Wen"):  is a joint  venture
between Peak and Xin Wen Mining Group Company Ltd. ("XWMG"), a limited liability
company  established  under  the laws of the  PRC.  Peak  owns 80% of the  joint
venture,  and the remaining 20% is owned by XWMG.  Xin Wen is a 50 MW coal fired
electric and steam  facility in Shandong  Province,  PRC.  Steam from Xin Wen is
primarily  sold to Xin Wen Mining  Group  Company  Ltd.  Power  generated by the
facility is also sold to Xin Wen Mining Group Company Ltd. and the local grid.


ITEM 2.  Name  of  any  domestic  associate   public-utility   company  and,  if
     applicable,  its holding  company,  and a description  of the  relationship
     between the foreign  utility  company and such  company,  and the  purchase
     price  by any  such  domestic  associate  public-utility  company  for  its
     interest in the foreign utility company.

     The following  companies,  each of which is a direct or indirect subsidiary
of Alliant Energy, are domestic public-utility companies and associate companies
of Xin Wen:

                       Interstate Power and Light Company
                       Wisconsin Power and Light Company
                   South Beloit Water, Gas & Electric Company
                              ATC Management, Inc.
                       American Transmission Company LLC
                         Wisconsin River Power Company

     At present, none of the aforementioned  domestic  public-utility  companies
has made an investment in or has any contractual relationship with Xin Wen.


                                   EXHIBIT A
                              State Certification

                                 Inapplicable.






                                   SIGNATURE

     The undersigned  company has duly caused this statement to be signed on its
behalf by the undersigned thereunto duly authorized.


                              Alliant Energy Corporation


                          By: /s/ F. J. Buri
                             --------------------------------------
                              F. J. Buri
                              Corporate Secretary


Date:  June 26, 2003