The Board of Directors of the Asian Infrastructure Investment Bank (AIIB) approved $45 million in non-sovereign financing on 8 October for a seawater reverse osmosis desalination plant on the Caspian coast of Azerbaijan, located in the industrial zone of Sumgayit, according to reporting published on 9 October by Trend News Agency and Report.az.
Key takeaways
- AIIB approved $45 million in non-sovereign financing for Azerbaijan's first large-scale seawater desalination plant, with the board decision announced on 8 October, per Trend News Agency.
- The plant is sized to produce approximately 300,000 cubic metres of drinking water per day from the Caspian Sea, per Report.az.
- The site will be inside the existing Sumgayit industrial zone and will be the first public-private partnership project in Azerbaijan's water sector, per Trend News Agency.
- A 25-year PPP agreement has been signed between ACWA Power and the State Water Resources Agency of Azerbaijan, with the Ministry of Finance providing a payment guarantee during operation, per Trend News Agency.
- The project is classified AIIB Category B for environmental and social risk, with brine discharge, offshore construction and legacy industrial contamination identified as the primary risks, per Trend News Agency.
What happened
The AIIB board approved $45 million in non-sovereign financing for the design, construction and operation of what will be Azerbaijan's first large-scale seawater reverse osmosis (SWRO) plant, according to Trend News Agency. The project is sized at approximately 300,000 cubic metres per day, drawing raw water from the Caspian Sea, the same outlet reported by Report.az in its 9 October summary of the bank notice.
The plant will be built on the Caspian coast within the industrial zone of Sumgayit, where the AIIB notes that an existing industrial area will host the project, avoiding the need for land acquisition, per Trend News Agency. ACWA Power is the sole sponsor, and a separate project company, Caspian Sea Azerbaijan Project Company, has been incorporated in Azerbaijan to act as the borrower under the financing framework, per Report.az.
A public-private partnership agreement has been signed for a 25-year term between ACWA Power and the State Water Resources Agency of Azerbaijan, with the Ministry of Finance providing a guarantee mechanism for payment obligations during the operational period, per Trend News Agency. The bank describes this as the first PPP project in Azerbaijan's water sector, a point also confirmed by Report.az.
Site, scale and environmental envelope
The AIIB has classified the project as Category B for environmental and social risk, with the primary risks tied to offshore construction, seawater intake, the discharge of saline water back into the Caspian, and legacy contamination from previous activity on the Sumgayit industrial site, per Trend News Agency. About 2 kilometres of new pipeline will be installed for seawater intake and wastewater discharge during construction, and the operating discharge system is designed to disperse brine several hundred metres offshore, the bank says. Long-term monitoring of marine biodiversity and water quality will be carried out, and AIIB assessments indicate the project is not expected to cause significant or irreversible harm to biodiversity, including the Caspian seal, per Trend News Agency.
Specification read
The headline scale is a designed output of approximately 300,000 m³/day of drinking water, equivalent to 300 MLD, per Report.az. The supplied sources report only a daily output figure; they do not publish a population-equivalent load, a peak hourly flow, or influent salinity values, so any further sizing for the buyer side has to wait on the tender documents. By process class, this is a seawater reverse osmosis plant on a Caspian industrial-zone site, and the engineering substance reported is the desalination train itself plus the marine intake and brine outfall, not a municipal wastewater treatment train.
For a procurement or plant-engineering reader, the recognition case is straightforward: if you are scoping a large-scale (≈300 MLD) SWRO drinking-water project on an industrial coastal site with a 25-year off-take contract, a sovereign payment guarantee and a Category B environmental classification, this is the project profile to benchmark against, from intake screening and low-lift pumping through cartridge filtration, high-pressure RO, energy recovery, post-stabilisation and disinfection, to an offshore brine diffuser, per Trend News Agency. Hydropure buyers working in similar coastal industrial-zone water supply and the wastewater handling around it can compare the train and outfall design choices in our Water Purification hub and review the Municipal process context, and for the wastewater side of an industrial-zone water balance, our Best Technology to Remove COD BOD From Industrial Wastewater (2026 Buyer Guide) sets out the biological-stage options buyers typically compare.
FAQ
How big is the Sumgayit SWRO plant?
It is sized to produce approximately 300,000 cubic metres of drinking water per day from Caspian Sea water, per Report.az. The supplied sources do not report a population-equivalent figure or a peak hourly flow.
Who is the off-taker and how is payment guaranteed?
The off-taker is the State Water Resources Agency of Azerbaijan under a 25-year PPP agreement with ACWA Power, and the Ministry of Finance is providing a guarantee mechanism for payment obligations during operation, per Trend News Agency.
What is the main environmental risk on this site?
According to the AIIB's assessment, the primary environmental risk during operation is the discharge of saline water and other wastewater into the Caspian, alongside offshore construction and legacy industrial contamination; the project is classified Category B and is not expected to cause significant or irreversible harm to biodiversity, per Trend News Agency.
What is the procurement model and who is the sponsor?
ACWA Power is the sole project sponsor and a separate project company, Caspian Sea Azerbaijan Project Company, will act as the borrower under the AIIB financing, per Report.az. The supplied sources do not name the EPC contractor or report a tender timeline.
