The proposal to provide the subsidy was cleared by a meeting of Delhi Cabinet presided over by Chief Minister Sheila Dikshit.
Dikshit had announced the subsidy on July 26 when Delhi Electricity Regulatory Commission had announced a hike of five per cent for domestic consumers.
Considering the subsidy, a domestic consumer will be charged Rs 2.70 per unit for first 200 units of power instead of Rs 3.90 as announced by Delhi Electricity Regulatory Commission last month.
Earlier, the per unit rate for consumption upto 200 units was Rs 3.70 and government used to give a subsidy of Rs 1 per unit which had brought down the rate to Rs 2.70.
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The per unit rate will be Rs 5 against earlier rate Rs 5.50 for consumption between 201 and 400 units as the government decided to give a subsidy of Rs 80 paisa per unit for the slab.
"For the second slab of 201 to 400 units subsidy will be Rs 0.80 per unit. As a result the tariff will come down to Rs 5 which is lower than the current rate of Rs 5.50 per unit," said the officials.
The BJP has been attacking the Delhi Government for a "series of hike" in power tariff in the last two years and promised to cut it by 30 per cent if it comes to power in the assembly polls slated for November.
Rejecting BJP's criticism, Dikshit has accused BJP of "misleading" the people to gain political mileage.
"Power tariff will not be an issue as power bills are going to come down," said a senior Minister.