The over 2,500-kilometer line will be constructed in three phases and will also now connect Adani Group's Dhamra LNG import terminal in Odisha, GAIL Chairman and Managing Director B C Tripathi said here.
In the first phase, a trunk pipeline from Phulpur (Allahabad) will be laid to Dobhi (Gaya) in Bihar with spur lines to Barauni and Patna. "The 755-km Phase-1 project will cost Rs 3,200 crore and will be completed by December 2018," he said.
GAIL already has a line up to Phulpur. It is raising capacity of this pipeline by laying a 672-km parallel line from Vijaipur in Madhya Pradesh to Phulpur via Auraiya in Uttar Pradesh at the cost of Rs 4,300 crore.
In the Phase-II, a 1200-km line would be laid from Dobhi to Bokaro/Ranchi in Jharkhand and Angul and Dharma in Odisha at the cost of Rs 5,565 crore, he said, adding that Phase-III will involve laying 583-km line to Haldia at the cost of Rs 3,425 crore.
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The phase-1 project will supply gas to major industries such as the Barauni Refinery and the Barauni fertilizer plant, which is being revived, besides power and steel plants.
It will also help in setting up of City Gas Networks in major cities enroute.
Previously, Jagdishpur-Haldia pipeline was to span over 2,050-km but the length has now been increased with addition of Dharma port connectivity.
The project was revived after BJP government came to power in May 2014 and it was felt that Modi's constituency, Varanasi should be connected to the gas grid at the earliest.
Also, the pipeline was needed for revival the fertiliser units in Barauni in Bihar and Gorakhpur in Uttar Pradesh.
Tripathi said GAIL is also investing Rs 2,000 crore in replacing old pipelines in Cauvery and Krishna Godavari area of Andhra Pradesh and Tamil Nadu as well as in Gujarat.