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Nabha Power Limited (NPL) v. Punjab State Power Corporation Limited (PSPCL) & Anr.

Civil Appeal · 2017 INSC 1008Decided 5 Oct 2017
Civil Appeal No. 179 of 2017
Justice Rohinton Fali Nariman · Justice Sanjay Kishan Kaul

Background

Nabha Power Limited (NPL), a special purpose vehicle set up to run a 1200 MW thermal power plant at Rajpura, Punjab, supplied power to Punjab State Power Corporation Limited (PSPCL) under a 25-year Power Purchase Agreement. A dispute arose over how certain costs, coal-washing charges, road transportation of coal, and which point's calorific (heat) value of coal should be used to calculate the energy tariff, should be treated under the agreement's pricing formula. NPL's claims were rejected by the State Electricity Regulatory Commission and largely rejected again by the Appellate Tribunal for Electricity, prompting this appeal to the Supreme Court.

Decision Breakdown

The Supreme Court held that the PPA's energy-charge formula must be read strictly as written, using ordinary business and grammatical meaning, without importing implied terms unless strictly necessary. On that reading, the Court held that the calorific value of coal must be measured at the project site (not the mine), and that NPL was entitled to recover the washing cost of coal and the transportation cost of coal (including road transport) from the mine to the project site, since these were genuinely part of delivering usable coal to the plant. However, the Court rejected NPL's other claims, transit/handling losses, third-party testing charges, liaising charges, and interest on delayed payment, holding these fell outside the formula's three defined cost elements and had, in any case, not been properly claimed earlier. The appeal was thus only partly allowed, with any amount due to be paid within three months, failing which 12% simple interest would apply.

Lesson Learnt

Courts interpreting long-term commercial contracts (like power purchase agreements) will generally hold parties strictly to the plain, literal wording of the formula or clause they signed, rather than reading in extra costs or benefits that weren't explicitly provided for, so parties negotiating technical, formula-driven contracts should ensure every cost component they expect to recover is expressly spelled out at the drafting stage.

Official source (sci.gov.in)View Judgment (PDF)

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