Project scope
600,000 m³/day SWRO desalination plant, PWSF tank facility with 1,200,000 m³ capacity, and PV capacity of 6.804 MWp.
Reported status and procurement
- Reported development
- Not established
- Procurement availability
- Unknown / not established
A source report alone does not establish current progress or an open buying window.
Project summary
Rabigh 4 IWP is a water desalination project in Saudi Arabia. ACWA Power’s project-page title says “Rabigh 4 IPP,” while its body heading and description identify it as “Rabigh 4 IWP.” The page places the project next to the existing Rabigh 3 IWP Plant but gives no more specific site location. (ACWA Power project page, title, project description and location; observed 17 October 2026.)
ACWA describes the project scope as a 600,000 m³/day SWRO desalination plant, a PWSF tank facility with 1,200,000 m³ capacity, and 6.804 MWp of PV capacity. It reports a project cost of US$675 million and consortium ownership of ACWA Power (45%), Haji Ali Reza (HAACO, 35%) and Al Moayyed (20%). These are figures and roles reported by ACWA. (ACWA Power project page, project description and key facts; observed 17 October 2026.)
The project page records commissioning as scheduled by 31 March 2026 and lists commercial operations in Q1 2026; these are schedule entries, not confirmation that the milestones occurred. (ACWA Power project page, project description and key facts; observed 17 October 2026.) ACWA’s investor report for the three- and six-month periods ended 30 June 2026 lists Rabigh 4 in its March 2026 table of projects that achieved an ICOD or PCOD and began contributing to ACWA’s results. The row reports 600,000 m³/day incremental capacity, 600,000 m³/day online capacity and a dash under remaining capacity. ACWA defines online capacity as capacity in operation at the stated ICOD/PCOD date. (ACWA Power Investor Report, p. 8.)
The report appendix places Rabigh 4 under “FULLY OPERATIONAL ASSETS CONTD.” and lists SWRO, 600,000 m³/day operational capacity and Q1 2026 in a column headed “PCOD (Actual / Expected)/Status.” That entry does not give an exact full-COD date. A general page 8 footnote says some projects may not have reached full operational capacity and obtained an official certificate of full commercial operations from the off-taker; it does not identify Rabigh 4 specifically. These portfolio entries report capacity and milestones, not sustained measured output. (ACWA Power Investor Report, pp. 8, 24.)
Reading-scope note: The investor-report review covered extracted text on pages 6, 8 and 24 of the 34-page report. Other pages and graphical content were not interpreted, and OCR was not commissioned.
Evidence limits and unknowns
Whether Rabigh 4 has an official certificate of full commercial operations from the off-taker, and its effective date, are not established by the report’s general footnote. The exact full-COD date is also not established by the combined ICOD/PCOD table or the appendix’s actual/expected/status column. (ACWA Power Investor Report, pp. 8, 24.)
The reported online and operational capacities do not establish sustained measured output or current operating performance. (ACWA Power Investor Report, pp. 8, 24.)
ACWA’s project page gives no site location more specific than next to the existing Rabigh 3 IWP Plant. (ACWA Power project page, project description; observed 17 October 2026.)
Current procurement status and an open supplier opportunity are not established by the reviewed project-page and investor-report material; no buying window is inferred. (ACWA Power project page, project description and key facts; Investor Report, pp. 8, 24.)
