EXHIBIT 99.6 MIDAMERICAN ENERGY HOLDINGS COMPANY EXCHANGE OFFER TO HOLDERS OF ITS 5.875% SENIOR NOTES DUE 2012 NOTICE OF GUARANTEED DELIVERY As set forth in the Prospectus dated , 200 (the "Prospectus") of MidAmerican Energy Holdings Company ("Company") under "The Exchange Offer - How to Tender" and in the Letter of Transmittal (the "Letter of Transmittal") relating to the offer (the "Exchange Offer") by the Company to exchange up to $500,000,000 in principal amount of its 5.875% Senior Notes due 2012 (the "Exchange Notes") for all of its outstanding 5.875% Senior Notes due 2012, issued and sold in a transaction exempt from registration under the Securities Act of 1933, as amended (the "Original Notes"), this form or one substantially equivalent hereto must be used to accept the Exchange Offer of the Company if: (i) certificates for the Original Notes are not immediately available; or (ii) time will not permit all required documents to reach the Exchange Agent (as defined below) on or prior to the Expiration Date (as defined in the Prospectus) of the Exchange Offer. Such form may be delivered by hand or transmitted by telegram, telex, facsimile transmission, letter or courier to the Exchange Agent. TO: THE BANK OF NEW YORK, (the "Exchange Agent") By Facsimile: (212) 298-1915 Confirm by telephone: (212) 815-5920 By Mail, Hand or Courier: The Bank of New York Corporate Trust Department Reorganization Unit 101 Barclay Street Floor 7 East New York, New York 10286 DELIVERY OF THIS INSTRUMENT TO AN ADDRESS OTHER THAN AS SET FORTH ABOVE OR TRANSMITTAL OF THIS INSTRUMENT TO A FACSIMILE OR TELEX NUMBER OTHER THAN AS SET FORTH ABOVE DOES NOT CONSTITUTE A VALID DELIVERY. Ladies and Gentlemen: The undersigned hereby tenders to the Company, upon the terms and conditions set forth in the Prospectus and the Letter of Transmittal (which together constitute the "Exchange Offer"), receipt of which are hereby acknowledged, the principal amount of Original Notes set forth below pursuant to the guaranteed delivery procedure described in the Prospectus and the Letter of Transmittal. Sign Here Principal Amount of Original Notes Signature(s) ___________________________ Tendered___________________________ ________________________________________ Please Print the Following Information Certificate Nos. (if available)_____________________ Name(s)_________________________________ Address ________________________________ Total Principal Amount ________________________________________ Represented by Original Notes Certificate(s) Area Code and Tel. No(s). ______________ ________________________________________ Account Number ____________________ Dated: __________________, 200 GUARANTEE The undersigned, a member of a recognized signature guarantee medallion program within the meaning of Rule 17Ad-15 under the Securities Exchange Act of 1934, as amended, hereby guarantees that delivery to the Exchange Agent of certificates tendered hereby, in proper form for transfer, or delivery of such certificates pursuant to the procedure for book-entry transfer, in either case with delivery of a properly completed and duly executed Letter of Transmittal (or facsimile thereof) and any other required documents, is being made within three trading days after the date of execution of a Notice of Guaranteed Delivery of the above-named person. Name of Firm______________________________________________________________ Authorized Signature______________________________________________________ Number and Street or P.O. Box_____________________________________________ __________________________________________________________________________ City__________ State_____ Zip Code______________________________________ Area Code and Tel. No.____________________________________________________ Dated: , 200