The step comes with power distribution companies and New Delhi Municipal Council (NDMC)'s submission that they were finding it very difficult to purchase power from the National Grid and other states and are incurring losses.
The new power tariff is expected from June 1.
"In order to complete the process of tariff determination, DERC is required to invite comments/objections/suggestions from all stakeholders and public at large through a public notice and also hold public hearing sessions, thereby giving opportunity to all stakeholders to submit their views on Aggregate Revenue Requirement/truce up petitions.
Chief nodal officer Ankur Garg said power tariff hike would be permitted only after the election results are announced on May 16.
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Reliance-owned BSES Rajdhani Power Limited (BRPL) has in its petition stated an ARR of Rs 9,361 crore for the coming year.
BSES Yamuna Power Limited (BYPL) has shown an ARR of Rs 5,527 crore whereas Tata Power Delhi Distribution Limited (TPDDL) has estimated its revenue requirement for the same period at Rs 6,079 crore.
NDMC has proposed fixed charge to be increased by flat 60 percent and energy charges by 15-38 percent for different consumers.
For the single delivery system, it has proposed Rs 3.90 per unit up to 200 unit; Rs 5 for between 201-400 unit; Rs 6.20 for up to 401-800 unit and Rs 9 for above 800 units.