Case Note

Port Tariffs and Expert Adjudication

The Supreme Court examined whether a contractual tariff for use of port facilities can remain unchanged in the face of statutory powers, and emphasised the role of an expert tariff authority in resolving complex tariff disputes.

Case Note 8 min read 12 Aug 2025

Background

Cargo ship berthed beside port cranes at sunset

The appeals arose from a dispute between Paradip Port Trust, now Paradip Port Authority, and Paradeep Phosphates Limited (PPL) regarding the fixation and revision of tariffs for use of a captive “Fertilizer Berth” at Paradip Port.

In 1985, the parties entered into an agreement for construction and exclusive use of the berth. Clause 1 provided that the rates could be enhanced at intervals as might be mutually agreed, while Clause 19 subjected PPL to the laws, rules and regulations of the Port Trust in force from time to time.

In 1993, the Port Trust issued a notification under Sections 48 to 52 of the Major Port Trusts Act, 1963 revising the scale of rates applicable to port facilities, including a separate rate for PPL. PPL challenged the revision, contending that the contractual tariff could not be altered unilaterally.

During the proceedings, 76% of PPL’s shares were transferred by the President of India to Zuari Maroc Phosphates Private Limited in February 2002, following which PPL became a private-sector entity.

The dispute ultimately concerned two tariff periods: October 1993 to 31 March 1999, and subsequent periods for which the Tariff Authority for Major Ports (TAMP) had jurisdiction.

Key Events

1985	Agreement between Paradip Port Trust and PPL for construction and exclusive use of the Fertilizer Berth, with a prescribed tariff.
1993	Port Trust issued notification under Sections 48 to 52 of the 1963 Act revising the scale of rates.
2000–02	Dispute referred to an informal arbitration mechanism. In February 2002, PPL’s shareholding was transferred to a private entity.
2002	Arbitral award directed refund for the period October 1993 to 31 March 1999 and left later periods to TAMP.
2009	Appellate Authority upheld the award.
2023	Orissa High Court dismissed the Port Trust’s challenge.
2025	Supreme Court heard two connected appeals and delivered a common judgment on 12 August 2025.

Proceedings Before the Supreme Court

PPL initially filed a civil suit challenging the revised tariff. In 2001, the parties entered into a supplementary agreement providing for an informal arbitration mechanism, expressly excluding the Arbitration Act, 1940.

The arbitrator, nominated from the Department of Public Enterprises, held that the Port Trust could not unilaterally revise the contractual tariff and directed refund of enhanced amounts for October 1993 to 31 March 1999. For the later period, the parties were directed to approach TAMP.

The Appellate Authority rejected the Port Trust’s appeal in 2009. The Orissa High Court upheld these decisions in January 2023.

The second appeal concerned a TAMP order dated 22 November 2011 relating to tariff proposals for subsequent financial years. The Port Trust challenged this order as well.

The Supreme Court heard both appeals together and delivered a common judgment on 12 August 2025.

Issues Before the Court

The principal questions considered by the Supreme Court were:

Contract and statutory power
Whether the contractual tariff could be revised without mutual consent, and whether the contract could restrict the Port Trust’s statutory powers.
Proper forum for tariff fixation
Whether the disputes should be determined by an expert statutory authority rather than through the informal arbitration mechanism.
Natural justice
Whether TAMP provided an adequate opportunity of hearing.
Basis of tariff revision
Whether TAMP adopted the correct approach in assessing the proposed revision.
Appellate mechanism
Whether a specialised appellate forum is required for technically complex tariff disputes instead of a direct appeal to the Supreme Court.

Submissions Before the Court

The parties made the following submissions:

Paradip Port Authority

The 1985 agreement did not permanently freeze the tariff; Clause 1 permitted enhancement and Clause 19 subjected PPL to the Port Trust’s laws and regulations.
When the parties failed to agree on revised rates, the statutory framework under the 1963 Act applied.
Tariff fixation involved complex financial and technical questions requiring expert consideration by TAMP.
TAMP acted in breach of natural justice by deciding without an adequate hearing despite extensive material.
TAMP adopted an incorrect approach by attempting to reconstruct the basis of the 1985 tariff instead of assessing an appropriate revision from the existing base.

Paradeep Phosphates Limited

The tariff in the 1985 agreement could be increased only through mutual agreement; the Port Trust could not unilaterally alter the agreed terms.
Clause 19 could not be used to override the contractual arrangement.
The arbitrator, Appellate Authority and High Court had reached concurrent findings, which should not be disturbed.
TAMP had considered the material placed before it and the Port Authority had been given sufficient opportunity to establish the basis for its proposed revision.

The Court’s Reasoning

The Supreme Court set aside the decisions of the arbitrator, Appellate Authority, High Court and TAMP, and remitted the matters to the expert tariff authority. The key aspects of its reasoning are summarised below.

Contract and statutory framework
The agreement could not be read as a permanent tariff freeze. Clause 1 contemplated enhancement of rates, while Clause 19 subjected PPL to the Port Trust’s laws and regulations. A contractual arrangement could not override statutory powers under the 1963 Act.
Need for expert adjudication
The informal arbitration mechanism was adopted when both parties were public-sector entities. After PPL became a private entity, the dispute involved technical and financial questions which were more appropriately determined by TAMP, an expert statutory authority. As the Adjudicatory Board under the 2021 Act had not been constituted, TAMP continued to have jurisdiction.
Natural justice
TAMP had decided the later tariff dispute without providing an adequate opportunity of hearing despite the volume and complexity of the financial and technical material placed before it. This amounted to a violation of the principles of natural justice.
Basis for tariff revision
TAMP had erred in attempting to reconstruct the basis of the 1985 tariff. The relevant question was whether, having regard to changes in costs and circumstances, the tariff required revision and, if so, to what extent. Tariff fixation requires consideration of the costs of providing the facilities together with an appropriate return, rather than merely reimbursement of expenditure.
Interconnected periods
The tariff for the earlier period (1993–1999) would form the basis for subsequent calculations. The later TAMP order therefore could not stand independently.
Appellate authority
Tariff disputes involve detailed factual, financial and technical questions. Referring to earlier decisions and other regulatory regimes, the Court observed that appeals from expert tariff bodies should be heard by a specialised appellate body rather than directly by the Supreme Court.

Decision

The Supreme Court disposed of the appeals as follows:

Set aside the arbitral award, Appellate Authority’s order and High Court judgment for the period October 1993 to 31 March 1999.
Remitted the dispute for that period to TAMP for fresh adjudication, including all issues such as limitation.
Set aside the TAMP order and High Court judgment for the subsequent tariff period.
Remitted the later-period dispute to TAMP for fresh determination along with the earlier period.
Directed that both parties be given a proper opportunity of hearing.
Recommended constitution of a specialised appellate body for appeals against orders of TAMP or the Adjudicatory Board.
Directed the Registry to forward a copy of the judgment to the Legislative Department, Ministry of Law and Justice, for examination and appropriate action.

Judgment in Brief

The Supreme Court held that a contractual tariff could not override the statutory framework, and that tariff disputes involving technical and financial questions must be determined by the expert tariff authority. It set aside the earlier decisions, remitted the matters to TAMP and emphasised the need for an opportunity of hearing. The Court also recommended a specialised appellate mechanism for such disputes.

Source Supreme Court of India, Paradip Port Authority v. Paradeep Phosphates Ltd. & Anr., 2025 INSC 971 (12 August 2025).