Delhi Electricity Regt vs TPDDL Depreciation Limit Set

Supreme Court set aside APTEL order, restoring Commission’s 2019 decision limiting depreciation recovery to six years for Rithala plant.
Capital cost fixed at ₹197.70 crore; depreciation of ₹83.34 crore approved for FY 2010‑18, remaining ₹94.59 crore barred.
Plant, a 108 MW gas‑based unit, operated only until March 2018 and ceased supplying electricity thereafter.
Court held depreciation cannot exceed operational period under PPA and consumer protection under Section 61(d).