( 1 ) M/s. Nava Bharat Ferro Alloys Limited, which is the petitioner in W. P. Nos. 9081 of 1991 and 13453 of 1993 and M/s. Raasi cements Limited, which is the petitioner in w. P. No. 234 of 1994, have assailed the validity of the impugned action of the A. P. State Electricity Board (the Board, for short) and its authorities, the respondents herein, demanding additional charges also known as surcharge for late payment and interest on delayed payment of the outstanding dues under Clause 32. 2. 1 and Clause 34 of the terms and Conditions of Supply (the TCS, for short) framed by the Board in exercise of the power conferred by Section 49 of the electricity (Supply) Act, 1948 (Central Act no. 54/48,) (hereinafter referred to as the supply Act , for brevity), as illegal and unauthorised and without jurisdiction. They have also sought for consequential directions to the respondents to refrain from demanding additional charges and interest from the petitioners in respect of the delayed payments of the amounts adjudicated to be due from them.

( 2 ) IT is appropriate that the relief soughtin each of these writ petitions be noted first. In W. P. No. 9081 of 1991, the followi