The cost of the additional expenditure will have to be borne by the customers finally, but the energy bill hikes will be "insignificant" given the advantages of such meters, Patel said.
The Rs 500 crore capital expenditure is being done through internal accruals and the company has no plans for any equity infusion, Patel said.
The company, which has been operating for the last four years following the Rs 18,000-crore acquisition of Reliance Energy from Anil Dhirubhai Ambani Group, has been investing up to Rs 1,500 crore per annum in various technology and network improvement initiatives every year, Patel said.