EXHIBIT 99.1

                            CERTIFICATION PURSUANT TO
                               SECTION 906 OF THE
                           SARBANES-OXLEY ACT OF 2002

I, Jack L. Alexander,  Senior Vice President of MidAmerican  Energy Company (the
"Company"),  certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002,
18 U.S.C. Section 1350, that to the best of my knowledge:

     (1) the  Quarterly  Report on Form 10-Q of the  Company  for the  quarterly
     period  ended  March  31,  2003  (the  "Report")  fully  complies  with the
     requirements  of Section 13(a) or 15(d) of the  Securities  Exchange Act of
     1934 (15 U.S.C. 78m or 78o(d)); and

     (2)  the  information  contained  in the  Report  fairly  presents,  in all
     material respects,  the financial condition and result of operations of the
     Company.


Dated:   May 12, 2003




                              /s/ Jack L. Alexander
                              ----------------------------
                              Jack L. Alexander
                              Senior Vice President
                              (co-chief executive officer)


A signed  original of this  written  statement  required by Section 906 has been
provided to  MidAmerican  Energy  Company  and will be  retained by  MidAmerican
Energy Company and furnished to the  Securities  and Exchange  Commission or its
staff upon request.