Location
Saudi Arabia / Middle East
Project record
Ras Mohaisen Independent Water Project and Marine Intake/Outfall
Ras Mohaisen is a Red Sea reverse-osmosis desalination project at Al-Qunfudhah with 300,000 cubic metres per day of designed production and 600,000 cubic metres of potable-water storage. Sharakat, the Saudi Water Partnership Company, announced financial close in December 2025 at an estimated SAR 2.57 billion. ACWA's year-end 2025 investor report places the full 300,000 cubic metres per day under construction and gives Q4 2029 as expected PCOD. Sharakat's financial-close release instead schedules initial production of 100,000 cubic metres per day in 2028 and full production in 2030. The EPC scope awarded to L&T and Lantania includes intake and outfall facilities, pumping, SWRO process systems, storage, electrical works and solar PV. Lantania separately identifies 3 kilometres of offshore works, while the ESIA identifies seabed trenching, dredging, pipe laying and marine monitoring. Accepted marine geometry, completed pipe installation and operating performance are not published.
Segment
Marine utilities
Status
Project agreements, the L&T-Lantania EPC award and December 2025 financial close are evidenced, and ACWA's 3 March 2026 year-end report classifies the full 300,000 m3/day capacity as under construction; offshore mobilisation, installed intake or outfall geometry, first water and accepted production are not dated / Confirmed
Last checked
15 July 2026
Coverage
Related sectors
Marine utilities is the primary work classification. Related sectors connect this record to adjacent marine delivery and market coverage.
Subject index
Related subjects
These subject pages bring together related projects, technical articles, reports, and evidence methods.
Project anatomy
Contract scope and delivery roles
- Client / authority
- Sharakat (Saudi Water Partnership Company) and Ras Mohaisen First Water Desalination Company
- Delivery parties
- Larsen & Toubro Water & Effluent Treatment, Lantania
- Contract route
- Sharakat procured the project as an independent water project under a 25-year water-purchase structure. Its financial-close release identifies ACWA at 45%, Haji Abdullah Alireza & Co. at 35% and AlKifah Holding at 20% in Ras Mohaisen First Water Desalination Company. ACWA's year-end report records a WPA-BOO-25-year structure, SAR 2.569 billion total investment cost and a 45% effective ACWA share. Sharakat's current portfolio page uses a BOOT label, so the transfer language should be checked against the executed project agreements rather than inferred from website terminology.
- Execution window
- The project agreements were signed on 5 February 2025 and the L&T-Lantania EPC award was announced on 13 March 2025. Financial close followed on 25 December 2025. Sharakat states initial production of 100,000 cubic metres per day in 2028 and full production of 300,000 cubic metres per day in 2030; ACWA's year-end 2025 report gives Q4 2029 as expected PCOD for the full capacity. Lantania's project literature gives a 2025-2029 execution period. All three remain source-specific schedules until a revised contractual baseline and accepted commissioning sequence are published.
- Works package
- The EPC scope comprises design, procurement, construction, testing and commissioning of a 300,000 cubic metre-per-day SWRO plant, intake and outfall facilities, pumping stations, pretreatment, reverse osmosis with energy recovery, post-treatment, automation and instrumentation, four potable-water tanks with 600,000 cubic metres of combined storage, a 132/33 kV substation, approximately 17 kilometres of overhead transmission line and a 30 MW solar PV field. Lantania identifies 3 kilometres of offshore work but does not split that figure into accepted intake and outfall lengths in the reviewed brochure.
- Marine interfaces
- The ESIA identifies excavation, infilling and seabed trenching for intake and outfall pipes, with barges, dredgers and vessels in the construction plant. It requires a dredging environmental management plan, permits before dredging and filling, silt curtains, water and sediment testing, continuous turbidity monitoring, underwater-noise controls and marine buoys at the intake and outfall. Its modelling describes brine and sediment-plume scenarios, but model outputs are design evidence rather than proof that the pipelines, intake headworks, outfall or diffuser have been installed and accepted.
- Commercial evidence boundary
- Financial close and an under-construction classification establish project formation and funded delivery, not water available for offtake. The 300,000 cubic metre-per-day figure is designed gross capacity. The 600,000 cubic metres of storage is physical design scope, not evidence of filled and accepted tanks. The 3-kilometre offshore figure is a contractor scope statement, not as-built pipeline length. Initial production, final PCOD and full production are distinct milestones and should not be collapsed into one opening claim.
Project timeline
Material developments
Dated events that changed scope, counterparties, delivery, commissioning or operating status.
Open this project in the Change LogACWA classified the full design capacity as under construction
The developer's year-end report records 300,000 cubic metres per day under construction, SAR 2.569 billion total investment cost and Q4 2029 expected PCOD. A portfolio construction classification does not prove offshore mobilisation, installed intake or outfall assets, first water, accepted capacity or commercial operation.
SourceSharakat announced financial close
Financial close establishes funded delivery and the 45/35/20 sponsor structure. Sharakat's release gives initial 100,000-cubic-metre-per-day production in 2028 and full 300,000-cubic-metre-per-day production in 2030; those are phased schedule statements rather than first-water, performance or acceptance records.
SourceL&T announced the Ras Mohaisen EPC order
The award covers design, procurement, construction, testing and commissioning of the SWRO plant and associated intake, outfall, pumping, storage, electrical and solar systems. Award evidence defines responsibility and scope but does not establish marine mobilisation, as-built pipeline length, hydraulic acceptance or operating output.
SourceSharakat signed the 25-year project agreements
The agreements moved the IWP from procurement into contracted development and established the sponsor consortium, offtake structure, designed capacity and storage scope. Signing did not establish EPC completion, offshore works, water production or transfer language beyond the reviewed agreement summary.
SourceEvidence gap
What remains unverified
Outstanding evidence
- Executed BOO/BOOT and 25-year water-purchase agreement baseline
- Reconciliation of Sharakat's 2028/2030 sequence with ACWA's Q4 2029 PCOD
- Approved marine design, permits and the allocation of the 3-kilometre offshore scope
- Seabed trenching, dredging, pipe installation, backfill and as-built survey acceptance
- Intake headworks, screens, fish protection, pumping and hydraulic testing
- Outfall, diffuser, brine dispersion, water quality and marine monitoring
- Pretreatment, RO trains, energy recovery, post-treatment and process guarantees
- 600,000 cubic metres of storage, substation, transmission line and solar-PV energisation
- First water, partial production, final PCOD and sustained availability evidence
Sources and related records
Read featured analysis Methodology Submit a correction Project tracker
Source collections
Project sources 8
- Ras Mohaisen project portfolio page Sharakat (Saudi Water Partnership Company), Current page reviewed 14 July 2026
- Project agreements for Ras Mohaisen IWP Sharakat (Saudi Water Partnership Company), 5 February 2025
- Financial close for Ras Mohaisen independent water desalination plant Sharakat (Saudi Water Partnership Company), 25 December 2025
- Investor Report for the twelve-month period ended 31 December 2025 ACWA, 3 March 2026
- L&T secures Ras Mohaisen desalination EPC order Larsen & Toubro, 13 March 2025
- Ras Mohaisen seawater reverse-osmosis desalination project profile Lantania, Current page reviewed 14 July 2026
- Lantania in Water project brochure Lantania, November 2025
- Non-technical summary of the Ras Mohaisen environmental and social impact assessment ACWA, Current disclosure reviewed 14 July 2026