Tata Power Delhi has sent a proposal to the Delhi government to join hands in deployment of electric buses by contributing in setting up charging stations for electric vehicles (EV).
The discom, operating in north Delhi, has written to transport minister Kailash Gahlot expressing its intention to invest for charging stations as part of its capital expenditure — funds used by a company to acquire, upgrade and maintain physical assets. The discom has also requested the government to direct Delhi Electricity Regulatory Commission (DERC) to allow it to pass on the cost in its tariff.
In the initial phase, Tata Power Delhi said, it wants to set up EV charging stations at four bus depots — Bawana, Narela, Burari and Rohini Sector 37— in its licensed area. “The existing electric network will also have to be augmented to meet the demand of new charging stations,” said an official.
The cost of strengthening as well as developing the infrastructure will be around Rs 172 crore, including around Rs 100 crore required for EV chargers and the associated civil and electrical work.
The increase in annual revenue requirement (ARR) due to capex investment will be around Rs 20 crore in the first year after the deployment of the project, which will gradually reduce. “With socialisation of the additional capex over the entire consumer base of Tata Power Delhi, the per unit impact on tariff will be negligible,’’ said a discom official.
According to the discom, its available surplus power can be utilised for charging e-vehicles. “Due to long-term power purchase agreements (PPA) with various power generating stations across India, Tata Power Delhi remains in surplus power situation almost throughout the year,” he added. “The discom sells it off in the short-term market at rates below PPAs. This can now be used for charging electric buses.”
Charging 879 electric buses will require more than 50 MUs of electricity every year. This will also bring down the surplus power loss by Rs 12-15 crore in the first year, which will come down further with more electric buses and optimisation of charging stations.
“The reduction in loss due to utilisation of surplus power will ultimately lead to net reduction in ARR, resulting in lower retail tariff for Delhiites,” said the official.