Package -3- Design, Supply, and Installation of a 330kV double circuit Nakonde-Kasama 212 km Long Overhead Transmission Line and Associated Line to Tanzania Border. — RETRADE-SA MPA Phase 1: Zambia - Tanzania Interconnector Project

Specific Procurement Notice Request for Bids (RfB) ( Plant ) Design, Supply and Installation (Two-Envelope Bidding Process, Without Pre - qualification) Employer: ZESCO Limited Project: Zambia-Tanzania Interconnector Project Contract title: Package -3- Design, Supply, and Installation for: Double circuit 330 kV Kasama-Nakonde overhead transmission line, 212km length, Double circuit 400 kV overhead transmission line from Nakonde to the Tanzanian border,15km length (charged at 330 kV), and Double circuit 132 kV Isoka-Nakonde (loop in and out of 66 kV Isoka - Nakonde line) overhead transmission line,13km length. Country: Zambia Grant No.: IDA-E3960, TF-D0134 and TF-C8907 RFB No: ZM-ZESCO-495219-CW-RFB Issued on: 1 June 2026 1. ZESCO Limited has applied for financing from the World Bank toward the cost of the Zambia–Tanzania Interconnector Project , and intends to apply part of the proceeds toward payments under the Contract for Package -3- Design, Supply, and Installation for: (i) Double circuit 330 kV Kasama-Nakonde overhead transmission line, 212km length, (ii) Double circuit 400 kV overhead transmission line from Nakonde to the Tanzanian border, 15km length (charged at 330 kV), and (iii) Double circuit 132 kV Isoka-Nakonde (loop in and out of 66 kV Isoka - Nakonde line) overhead transmission line, 13km length. For this contract, the Borrower shall process the payments using the Direct Payment disbursement method, as defined in the World Bank’s Disbursement Guidelines for Investment Project Financing, except for those payments, which the contract provides to be made through letter of credit. 2. ZESCO Limited now invites sealed Bids from eligible Bidders for Design, Supply, and Installation for: (i) Double circuit 330 kV Kasama-Nakonde overhead transmission line, 212km length, (ii) Double circuit 400 kV overhead transmission line from Nakonde to the Tanzanian border, 15km length (charged at 330 kV), and (iii) Double circuit 132 kV Isoka-Nakonde (loop in and out of 66 kV Isoka - Nakonde line) overhead transmission line, 13km length. 3. Bidding will be conducted through international competitive procurement using a Request for Bids (RFB) as specified in the “The World Bank Procurement Regulations for IPF Borrowers: Procurement in Investment Project Financing - Goods, Works, Non- Consulting and Consulting Services - Seventh Edition” (issued September 2025) (the “Procurement Regulations”) and is open to all eligible Bidders as defined in the Procurement Regulations. 4. Bids will be evaluated in accordance with the evaluation process set out in the bidding documents. The following weightings shall apply for Rated Criteria (including technical and non-price factors): 50% and for Bid cost: 50%. 5. Interested eligible Bidders may obtain further information from ZESCO Limited, Attention: Lemmy Nyirenda lnyirenda@zesco.co.zm and inspect the bidding document during office hours 07:30 AM to 5:00 PM, CAT at the address given below . The document will be accessed by downloading from authorized ZESCO Limited website: https://www.zesco.co.zm/tender.php or sent by email on written request. 6. The bidding document in English may be purchased by interested eligible Bidders upon the submission of a written application to the address below and upon payment of a non-refundable fee of USD 300 to be deposited in the ZESCO Limited Bank Account provided below: Bank Name: ABSA BANK ZAMBIA PLC Account Name: ZESCO LIMITED Branch Name: CORPORATE Account Number: 01 - 1031102 SWIFT Code: BARCZMLXXXX Currency: USD The document will be accessed by downloading from authorized ZESCO Limited website: https://www.zesco.co.zm/tender.php or sent by email on written request. 7. Bids must be delivered to the address below on or before 17 July 2026 . Electronic bidding will not be permitted. Late Bids will be rejected. The outer Bid envelopes marked “ORIGINAL BID”, and the inner envelopes marked “TECHNICAL PART” will be publicly opened in the presence of the Bidders’ designated representatives and anyone who chooses to attend, at the address below on 17 July 2026 , at 10:30 AM CAT . All envelopes marked “FINANCIAL PART” shall remain unopened and will be held in safe custody of the Employer until the second public Bid opening. 8. All Bids must be accompanied by a “Bid Securing Declaration ” as per the details in the Request for Bids (RfB). 9. Attention is drawn to the Procurement Regulations requiring the Borrower to disclose information on the successful bidder’s beneficial ownership, as part of the Contract Award Notice, using the Beneficial Ownership Disclosure Form as included in the bidding document. 10. The address(es) referred to above is: Attention: Lemmy Nyirenda Address: Stand No. 6949, Great East Road, P.O. Box 33304 Procurement Offices, LDCC Building City: Lusaka ZIP Code: 10101 Country: Zambia Telephone: +260 211 362 335 Electronic mail address: lnyirenda@zesco.co.zm , copy matthew.ndhlovu@zesco.co.zm