VIJAYAWADA: A day after the AP Electricity Regulatory Commission’s (APERC) missive to the state government over power procurement from markets surfaced, the energy department claimed that the commission has “erred” in calculating the “hypothetical loss” by taking normally available energy instead of the actual energy available from the approved sources. In fact, the distribution companies (Discoms) accrued a monetary saving of Rs 22 crore between December 17, 2020, and January 15, 2021, the period in which the commission analysed the sales, as against the Rs 48 crore loss observed by the APERC, it said.