Indraprastha Gas Ltd, IGL, has increased the price of Compressed Natural Gas, CNG, in Delhi, Noida, Greater Noida and Ghaziabad by 20 paise per kilogram. The CNG will now cost 30 rupees per kg in Delhi and 33.60 rupees per kg in Noida, Greater Noida and Ghaziabad. The new price came into effect midnight on Monday.