Mr Goyal, who took over as the rail minister after a Cabinet reshuffle in August, said he was trying to give the national transporter a "new direction".
"During the next five years, the Railways alone will be looking at an investment of upwards of USD 150 billion. And when I translate that into jobs, I see a million jobs being created only through investments in the railway sector," he said.
The Railways can play an important role in "aggressively pursuing" government agenda to provide safe, secure, comfortable travel, he said addressing an awards function organised by the business daily Economic Times in Mumbai last night.
A focus on infrastructure could also help increase local manufacturing, he said.
Mr Goyal said his ministry was also compressing the time taken for complete electrification of rail lines to four years from the earlier plan of 10 years, which would help cut costs by around 30 per cent for the loss-making Railways.
Earlier this month, Mr Goyal had said the Railways would create one million jobs within the next 12 months.
In 2015, his predecessor Suresh Prabhu had said the Railways needed investments of Rs 8.5 trillion over the next five years, and invited overseas investors for the same.
Mr Prabhu had also secured a debt funding worth Rs 1.5 trillion from Life Insurance Corporation to fund various projects.
It is not clear whether Mr Goyal's USD 150 billion is part of Mr Prabhu's Rs 8.5 trillion investments.