Green energy solutions company NexGen Energia plans a Rs 15,000 crore investment to open 5,000 green diesel and compressed biogas (CBG) pumps in the country over the next 10 years. Green energy solutions company NexGen Energia plans a Rs 15,000 crore investment to open 5,000 green diesel and compressed biogas (CBG) pumps in the country over the next 10 years. Zee News :Business