Delhi will get 1,000 new compressed natural gas (CNG) buses in the next six months. Of these, 170 buses will start plying by December 15. With this, the strength of Delhi Transport Corporation (DTC) bus fleet will go up to 3,141 and the corporation will become the single largest CNG bus operator in the country. The induction of the new CNG buses in the fleet was approved by the DTC board recently. The state government is footing the bill for these buses at the rate of about Rs 14 lakh per bus. "The state government is spending the money from its planned funds," a transport department official said.