Water
Ras Mohaisen's three published schedules still need reconciliation
Ras Mohaisen has a dated chain from project-agreement signing through EPC award, financial close and ACWA's under-construction classification, but Sharakat's 2028 partial-production and 2030 full-production sequence, ACWA's Q4 2029 PCOD and Lantania's 2025-2029 execution period are not the same milestone. The 3-kilometre offshore scope still needs evidence from marine design through first water and sustained production.
What changed
Sharakat's February 2025 release establishes project-agreement signing and its December release establishes financial close, initial production of 100,000 cubic metres per day in 2028 and full 300,000-cubic-metre-per-day production in 2030. L&T establishes the March 2025 EPC award. ACWA's year-end report classifies all 300,000 cubic metres per day as under construction and gives Q4 2029 as expected PCOD. Lantania gives a 2025-2029 execution period and 3 kilometres of offshore work; the ESIA establishes the intake-outfall and seabed-work interfaces. None of those sources publishes accepted marine as-builts, completed hydraulic testing, first-water certification or sustained operating results.
Why it matters
This is the kind of water project that disappears from a marine-works monitor when coverage stops at the desalination headline. L&T's scope includes intake and outfall facilities; Lantania identifies 3 kilometres of offshore work; the ESIA identifies seabed trenching, dredging, pipe laying, turbidity controls, brine modelling and marine monitoring. Yet financial close, modelled impacts and an under-construction portfolio label do not establish installed pipelines, accepted hydraulics or water available to the offtaker. The three published schedules also refer to different delivery states and need an explicit contractual reconciliation.
Decision read
What remains open
The immediate issue is schedule control. Public statements point to 2028, Q4 2029 and 2030, while the commercial structure is described as both BOO and BOOT. Those differences need an owner-confirmed baseline before progress can be judged. Marine reporting should then follow the approved alignments, seabed works, intake and outfall tests and brine-plume compliance alongside plant commissioning. First water, any retained 100,000-cubic-metre-per-day tranche and sustained 300,000-cubic-metre-per-day availability are separate operating milestones, not consequences of financial close.
Next watchpoints
- Executed BOO/BOOT language and the 25-year offtake baseline
- Definition and reconciliation of the 2028, Q4 2029 and 2030 milestones
- Marine permits, approved alignments and allocation of the 3-kilometre offshore scope
- Trenching, dredging, pipe laying, joints, backfill and as-built hydrography
- Intake screens, fish protection, pumps, electrical and hydraulic acceptance
- Outfall and diffuser integrity, brine dispersion and marine-water monitoring
- SWRO process guarantees, storage, grid connection, solar PV and controls
- First water, partial-capacity certificate, final PCOD and sustained availability
Knowledge context
Related knowledge topics
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Sources used 6
- 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
- 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
Corrections and methodology
Facts are dated to the source record above. IMWO updates the brief when procurement, award, delivery, or scope evidence materially changes.
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