Indraprastha Gas will initially supply around 3,000 standard cubic metres of natural gas daily to railway establishments across Delhi, Ghaziabad and Gautam Buddha Nagar. The switch is expected to replace around 500 kg of LPG and 2,500 litres of diesel consumed each day. Indraprastha Gas Ltd (IGL) has partnered with the Delhi Division of Northern Railway to replace LPG and diesel consumption with piped natural gas (PNG) at 22 railway establishments across.