ISLAMABAD: Pakistan has welcomed the latest ruling by the Court of Arbitration under the Indus Waters Treaty (IWT), describing it as a significant reinforcement of restrictions on India’s use of the Western Rivers and a major boost to Pakistan’s legal position in ongoing hydropower disputes.
In a statement, the Government of Pakistan expressed “utmost satisfaction” over the Court of Arbitration’s Supplemental Award Concerning Maximum Pondage, issued on May 15, 2026, in proceedings related to the Ratle Hydroelectric Plant and the Kishenganga Hydroelectric Project design disputes.
According to the statement, the award validated Pakistan’s long-held position that the Indus Waters Treaty imposes substantive limitations on India’s water-control capabilities on the Western Rivers and that these limitations apply during the planning and design stages of hydropower projects.
The government stated that the ruling clarified that such restrictions are not mere formalities and cannot be fulfilled solely through later assurances of operational restraint. It said pondage for a Run-of-River plant must be justified on the basis of actual project requirements, expected operations, site hydrology, hydraulic conditions, power-system needs, and detailed technical information required under the treaty.
Referring to previous proceedings, the statement noted that the latest ruling builds upon the Court’s General Issues Award issued on August 8, 2025. It said the supplemental award gives practical effect to the requirement that installed capacity and anticipated electricity demand must be realistic, technically sound, and properly supported.
The government maintained that installed capacity must align with expected operational conditions, hydrological and hydraulic data, and treaty obligations, while projected load demand should correspond to actual operational needs and the requirements of the power system intended to be served by the project.
The statement further said the ruling addresses Pakistan’s concerns regarding attempts to justify larger water storage capacity without sufficient technical grounds.
According to the government, the Court made clear that India cannot justify increased pondage through unrealistic capacity projections, artificial load curves, exaggerated peaking assumptions, or simple claims of compliance with Paragraph 15 release limits. It added that while Paragraph 15 remains an operational constraint, it cannot replace evidence-based justification for the water-control capacity being sought.
The statement also said that any alternative operating pattern proposed by India must be supported through specific information and relevant underlying data.
Pakistan further stated that the ruling strengthens its right to review project details and seek full disclosure under treaty provisions. The government said India is required to provide sufficient information and explanations enabling Pakistan to properly assess treaty compliance.
It added that if India fails to provide such information, it would fail to establish that the proposed maximum pondage satisfies Paragraph 8(c) of Annexure D of the treaty.
The government also noted that the Court confirmed any applicable minimum environmental flow obligations must be taken into account while calculating pondage requirements for firm power generation where such obligations exist and are not otherwise fulfilled.
According to the statement, the Court clarified that Paragraph 15 release requirements do not automatically satisfy minimum-flow obligations.
Pakistan further emphasized that the Court had earlier ruled that arbitration awards under the treaty are final, binding, and carry controlling legal effect for subsequent treaty bodies on relevant questions of interpretation.
The government said Pakistan would present these interpretations before the Neutral Expert process in accordance with treaty procedures and applicable confidentiality arrangements.
Reaffirming its broader policy stance, Pakistan said it remains committed to the Indus Waters Treaty, its dispute-resolution mechanisms, and the peaceful settlement of water-related disputes.
The statement added that Pakistan would continue to safeguard its rights under the treaty and pursue all lawful and diplomatic avenues to ensure that hydropower projects on the Western Rivers are designed and operated strictly within treaty limits.
The government concluded by describing the ruling as “a strategic consolidation of Pakistan’s Treaty position,” stressing that maximum pondage must remain realistic, evidence-based, hydrologically grounded, justified by power-system needs, treaty-compliant, and incapable of inflation through artificial assumptions.