S. 92C: Transfer pricing-Arm’s length price-Avoidance of tax-International transaction-Inter-unit sale of electricity-the enhancement made by the DRP by resorting to weighted average of purchase price of electricity by BEST @ Rs. 5.11 per unit is not tenable-Accordingly, addition made by the AO/TPO in respect of sale of electricity by the eligible units to non-eligible units is not sustainable.