Substantial expansion for excise exemption can be shown by overall installed capacity growth, even without uniform departmental expansion.

Substantial expansion under Notification No. 33/99-C.E. was treated as satisfied where the evidence showed an overall installed capacity increase exceeding 40%, even though expansion was not uniform across every department and production had not increased. The Ministry's circular clarified that substantial expansion need not occur in every section of a unit, and the Chartered Engineer's certificate was accepted to compare pre-expansion and post-expansion capacities across departments. The lowest-capacity department was treated as the bottleneck for assessing overall installed capacity. On that basis, the respondent remained entitled to the exemption.

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Issues: Whether the respondent was entitled to exemption under Notification No. 33/99-C.E. on the basis that it had achieved the requisite substantial expansion in installed capacity.

Analysis: The exemption was examined with reference to the terms of the notification and the Ministry's circular. The circular clarified that substantial expansion need not mean expansion in every department and that the exemption could apply even if production did not increase. The respondent produced a Chartered Engineer's certificate showing pre-expansion and post-expansion capacities of the different departments. As the departments had differing capacities, the lowest-capacity department was treated as the bottleneck for determining overall installed capacity. The certificate showed an increase of more than 40%, and the departmental case that the drawing section alone was decisive was not supported by the notification, the circular, or the evidence on record.

Conclusion: The respondent satisfied the requirement of substantial expansion and remained entitled to the exemption.

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