Coal e-auction pricing and linkage policy must satisfy rational classification, fairness, and legitimate expectation requirements.

Coal distribution policy must remain fair, non-arbitrary, and consistent with constitutional and statutory controls when dealing with an essential commodity. The Supreme Court held that linked non-core consumers and traders were not similarly placed for coal e-auction purposes, so subjecting both to the same bidding-based pricing mechanism lacked rational classification and was unconstitutional to that extent. The Court also accepted that genuine linked consumers and certain smokeless fuel or hard coke units could rely on prior governmental assurances and established linkage arrangements, so policy changes could not displace them without a lawful, reasoned, and transparent framework aligned with public interest.

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Issues: (i) Whether the coal e-auction scheme, and the consequential differential treatment between linked non-core consumers, traders, and other categories of buyers, was arbitrary and violative of Article 14 and the statutory control regime. (ii) Whether the linked consumers and smokeless fuel or hard coke units could assert enforceable rights based on promissory estoppel or legitimate expectation against a change in the coal distribution policy.

Issue (i): Whether the coal e-auction scheme, and the consequential differential treatment between linked non-core consumers, traders, and other categories of buyers, was arbitrary and violative of Article 14 and the statutory control regime.

Analysis: Coal was treated as a scarce essential commodity and the coal companies, being State instrumentalities and monopolies, were under a duty to act fairly, reasonably, and consistently with the constitutional mandate under Article 39(b). A policy that made the price of coal variable through bidding, without fixing a known and stable price, was held to affect the ability of genuine consumers to plan production and to place linked non-core units at par with traders, despite their different needs and position. The Court held that traders and consumer-units did not form the same class for this purpose, and that a scheme which allowed trader-controlled bidding to determine supply and price for linked consumers lacked a rational basis.

Conclusion: The e-auction scheme was held to be unconstitutional to the extent it subjected linked non-core consumers to the same bidding process as traders and other consumers without rational classification, and the challenge was accepted on this ground.

Issue (ii): Whether the linked consumers and smokeless fuel or hard coke units could assert enforceable rights based on promissory estoppel or legitimate expectation against a change in the coal distribution policy.

Analysis: The Court accepted that certain smokeless fuel units had been encouraged to establish themselves on the basis of governmental and coal-company assurances regarding coal linkage, and that genuine linked consumers had long operated under an established distribution framework. At the same time, the Court held that policy could be changed for valid reasons, but not in a manner that defeated the public interest or unfairly deprived genuine consumers of the benefit of the existing linkage system. The authorities were required to identify genuine consumers, maintain transparency, and evolve a lawful policy consistent with the constitutional and statutory scheme.

Conclusion: The challenge based on promissory estoppel and legitimate expectation was accepted to the extent that genuine linked consumers could not be displaced without a lawful and reasoned policy, though the State was left free to frame a fresh policy consistent with public interest.

Final Conclusion: The Court upheld the requirement that coal distribution policies must remain fair, non-arbitrary, and aligned with the constitutional duty to distribute a vital resource in the public interest, while permitting the authorities to reformulate the system through a lawful and transparent process.

Ratio Decidendi: A State monopoly dealing in an essential commodity cannot adopt a pricing and distribution mechanism that is irrational or that treats materially different consumer classes as equals; any change in policy must remain consistent with constitutional fairness, public interest, and rational classification.

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