Performance record

Hassyan IWP Block A marine-system commissioning evidence

Block A's 60 MIGD commissioning is the first public operating milestone for Hassyan's 180 MIGD Phase 1, but the available evidence is insufficient to establish full-plant reliability or post-handover performance. This record separates the confirmed entry into service and documented intake-outfall design basis from the remaining acceptance, uptime, water-quality, and diffuser-monitoring evidence.

Evidence boundary: the cited sources establish a defined milestone or observation, not certification or a post-handover performance conclusion.

Aerial view of the Hassyan IWP construction site showing the large reverse-osmosis process units and supporting plant infrastructure

Dubai Media Office / DEWA

Verified record

Block A commissioned; sustained operation and full-plant acceptance not established in UAE

Available sources confirm the dated milestone and define the asset scope shown below. Acceptance, availability, condition, and lifecycle outcomes are included only where separately documented.

Evidence level Corroborated Sources reviewed 5

Location

UAE / Middle East

Milestone or operating state

Block A commissioned; sustained operation and full-plant acceptance not established

Evidence conclusion

Block A commissioning evidence

Last updated

13 July 2026

Scope and limits

Evidence scope and limits

Owner statements available on 13 July 2026 confirm Block A commissioning and the published delivery schedule. The project structure and ESIA also define the marine design basis. No independent records establish uptime, product-water compliance, outfall performance, environmental monitoring results, final completion or acceptance of the remaining blocks.

Confirmed

Supported findings

  • DEWA reported that the first 60 MIGD block had been commissioned in its Q1 2026 results published on 12 May 2026.
  • DEWA reported that a further 120 MIGD was expected during 2026, while its January progress update placed full Phase 1 completion in Q1 2027.
  • ACWA Power identifies seawater intake and outfall systems within the 180 MIGD facility and names the SIDEM-SEPCO III EPC consortium.
  • The project ESIA documents intake and outfall pipelines, provision for a planned additional 60 MIGD, and diffuser placement beside the adjacent power-plant outfall following marine dispersion review.

Still unverified

Unverified outcomes

  • Continuous Block A availability, unplanned outage history, and operating reliability over a representative period.
  • Independent product-water quality results and confirmation of sustained compliance under changing feed-water conditions.
  • Operating marine water-quality, brine-dispersion, and diffuser-monitoring results after Block A entered service.
  • Final acceptance of the intake-outfall system and commissioning of the remaining two 60 MIGD blocks.

Metric observations

Measurements and reporting gaps

Evidence pending

Service reliability

Entry into service is confirmed for Block A, but public uptime, availability, outage, and maintenance evidence remains insufficient for a reliability conclusion.

Partially evidenced

Delivery quality

The first commissioning milestone and the remaining delivery sequence are public; final completion, acceptance, and defect-closeout evidence remain outstanding.

Design basis confirmed

Environmental performance

The ESIA establishes the intake-outfall and diffuser design basis, but post-commissioning marine monitoring results remain unavailable publicly.

Subject index

Related subjects

These subject pages bring together related projects, technical articles, reports, and evidence methods.

Related project evidence

The project record provides delivery scope and participants. The related brief provides dated project context and unresolved technical questions.

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Sources used

Source collections

Record limitations

The record is limited to the cited public evidence and does not confer certification, ranking, warranty, safety or environmental approval, recognition, or procurement endorsement.

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