National OGRA raises CNG tariff by Rs. 1.02/kg By Hussain - May 4, 2011 0 137 Share Facebook Twitter Pinterest WhatsApp The Oil and Gas Regulatory Authority (OGRA) has increased the price of compressed natural gas (CNG) by Rs. 1.02 per kilogram. According to a private TV channel, a notification has also been issued in this regard by OGRA.