Design, supply and installation of the proposed battery energy storage system (BESS)
Issued by World Bank project · via World Bank — Procurement Notices
- Published
- 28 Aug 2026
- Reference
- TZ-ZECO-380710-CW-RFB
- Location
- Tanzania, China
- Sector
- Construction & Infrastructure
- Type
- works
At a glance
World Bank project in China has published a contract award notice in construction & infrastructure: “Design, supply and installation of the proposed battery energy storage system (BESS)”. The notice does not state a closing date, so confirm the timetable on the official portal. Quote reference TZ-ZECO-380710-CW-RFB in any correspondence with the buyer. FreeTender has recorded 8,489 notices from this buyer since 2026, 8,488 of them currently open. There are 258 open construction & infrastructure notices in China on FreeTender. Bids are submitted to the buyer through World Bank — Procurement Notices, not through FreeTender.
Key requirements
Taken from the notice by FreeTender. The tender document on the official portal is binding — check it, and any corrigendum, before you bid.
- Procurement method
- RFB-Request for Bids
To bid on World Bank-financed
The borrower runs the procurement under the World Bank Procurement Regulations; eligibility and documents are in the borrower's bidding document, not on the World Bank site.
Details
Contract Award
Project: P169561-Zanzibar Energy Sector Transformation and Access Project
Loan/Credit/TF Info: IDA-68970
Bid/Contract Reference No: TZ-ZECO-380710-CW-RFB
Procurement Method: RFB-Request for Bids
Scope of Contract: Design, Supply, Installation, Testing, Commissioning, and Initial Operation of 40 MWh Battery Energy Storage System (BESS) in Mtoni.
Notice Version No: 0
Date Notification of Award Issued (YYYY/MM/DD) 2026/07/14
Duration of Contract
36 Month(s)
Awarded Bidder(s):
Sieyuan Electric Co., Ltd. (339720) No.3399, Huaning Road, Minhang District, Shanghai, CN, 201108
Country: China
Evaluation Scores
Bid Price at Opening USD
Evaluated Bid Price USD 12421500.00
Signed Contract price USD 16506978.99
Beneficial Ownership Details
Sieyuan Electric Co., Ltd. (339720)
Form Date: 03-JUL-26
Summary of Reason le soumissionnaire dclare qu'il n'y a aucun bnficiaire effectif qui remplisse l'une au moins des conditions
Evaluated Bidder(s):
HNAC TECHNOLOGY COMPANY LIMITED (957547) No 609, LuSong Rd, LuGu, Changsha, Hunan Province, P.R. China
Country: China
Evaluation Scores
Bid Price at Opening USD
Evaluated Bid Price USD 12462119.58
CCECC - XNEP (990202) No.4, Beifengwo, Haidian District, Beijing, China
Country: China
Evaluation Scores
Bid Price at Opening USD
Evaluated Bid Price USD 12256546.65
JV EAUXWEL NIGERIA LIMITED AND NIDEC ASI (990115) Eauxwell Nigeria Limited-273A Kofo Abayomi Street, Victoria Island, Lagos Nigeria
Country: Nigeria
Evaluation Scores
Bid Price at Opening USD
Evaluated Bid Price USD 25029162.88
POWER CHINA GUIYANG ENGINEERING CO. LTD (990123) No.16, Xingqian Road, Guanshanhu District, Guiyang City, Guizhou Province, P.R. China
Country: China
Evaluation Scores
Bid Price at Opening USD
Evaluated Bid Price USD 14073175.41
ZHONGTIAN ENERGY STORAGE TECHNOLOGY CO., LTD (ZTT) ZEST (990121) No. 36 Hongxing East Road, Nantong Economic and Technical Development Zone, Nantong City, Jiangsu Province, P.R. China
Country: China
Evaluation Scores
Bid Price at Opening USD
Evaluated Bid Price USD 25823291.92
Rejected Bidder(s):
TONTAN PROJECT TECHNOLOGY COMPANY LIMITED (993288) P.O. Box 10848, Plot 119, Mikocheni Warioba, Dar es Salaam, Tanzania
Country: Tanzania
Evaluation Scores
Bid Price at Opening USD
Evaluated Bid Price USD
Reason for Rejection Non Responsive
NOVAVIS INTERNATIONAL (1001210) 401 Sonterra BLVD San Antonio TX 78258, United States of America
Country: United States
Evaluation Scores
Bid Price at Opening USD
Evaluated Bid Price USD
Reason for Rejection Failure to meet minimum technical score
RIMAL GLOBAL TECHNICAL (990118) Office No-509, 5th Floor,Al-Nahda Tower-2, Azaiba Oman
Country: Oman
Evaluation Scores
Bid Price at Opening USD
Evaluated Bid Price USD
Reason for Rejection Non Responsive
JV AIPEC AND SPOWERESS ENERGY. (990117) AVIC-INTL catic apartment Oysterbay, P.O.BOX 11600 Toure Drive, Dar es Salaam, Tanzania
Country: China
Evaluation Scores
Bid Price at Opening USD
Evaluated Bid Price USD
Reason for Rejection Non Responsive
CHINA HENAN INTERNATIONAL COOPERATION GROUP CO. LTD (CHICO) (365356) Plot No. 9 Ethiopia Drive/Crescent Oysterbay, P.O. Box 75026, Dar es Salaam, TanzaniaMobile: [contact details removed]
Country: China
Evaluation Scores
Bid Price at Opening USD
Evaluated Bid Price USD
Reason for Rejection Non Responsive
BUCKETS TANZANIA LIMITED (990104) P. O. Box 105920 Dar es Salaam info@buckets.co.tz
Country: Tanzania
Evaluation Scores
Bid Price at Opening USD
Evaluated Bid Price USD
Reason for Rejection Non Responsive
GOLDWIND INTERNATIONAL HOLDINGS (990126) Flat/Rm 1701 17/F, Honest Building, 9-11 Leighton Road, Causeway Bay HK
Country: China
Evaluation Scores
Bid Price at Opening USD
Evaluated Bid Price USD
Reason for Rejection Failure to meet minimum technical score
DONGFANG ELECTRIC INTERNATIONAL CORPORATION - DEC (990024) . 18, Xixin Avenue, High Zone West Park, Chengdu, China/Email: [contact details removed]
Country: China
Evaluation Scores
Bid Price at Opening USD
Evaluated Bid Price USD
Reason for Rejection Non Responsive
JV SUMEC & CLOU (990023) 12/F, SUMEC Building, Changjiang Road, City of Nanjing, China
Country: China
Evaluation Scores
Bid Price at Opening USD
Evaluated Bid Price USD
Reason for Rejection Non Responsive
DELTAGEN (PTY) LTD (990111) 308 Renaissance Plaza , 3rd Floor SuiteHaile Selassie Rd , Dar Es Salaam , Tanzania
Country: South Africa
Evaluation Scores
Bid Price at Opening USD
Evaluated Bid Price USD
Reason for Rejection Non Responsive
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Before you bid on this tender
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- Confirm the closing date and submission window on the official portal before you start preparing your bid.
- Read the full notice and every attached document, including the scope, specifications and any bill of quantities or terms of reference.
- Check the eligibility criteria — prior similar experience, annual turnover, certifications and registrations — and make sure you qualify before investing effort.
- Prepare any earnest-money deposit (EMD) or bid security and the required formats early; missing or wrongly-formatted documents are a common cause of rejection.
- Note how bids must be submitted (online or physical), in what format, and whether a digital signature or portal registration is required.
- Watch for corrigenda and clarifications right up to the deadline — requirements and dates can change.
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