This amount earmarked is lesser than Rs 20,995 crore for 2012-13.
The company's capital expenditure would be funded through internal accruals, according to company documents.
As on December 31, 2012 the authorised share capital of the company stood at Rs 10,000 crore and paid up capital at Rs 8,245.50 crore.
NTPC has installed capacity of about 40,000 MW and plans to enhance it to about 70,000 MW by March, 2017.
Meanwhile, the Finance Ministry has also kept a provision for compensating the company after its proposed hydro plant in Uttarakhand was scrapped in 2010.
"As per the recommendation of the government and claim settlement committee, a provision has been kept for compensating NTPC towards reimbursement for construction of the Loharinag Pala project due to closure," the documents said.
A Group of Ministers (GoM) in 2010 had scrapped the NTPC's controversial 600-MW Loharinag Pala hydel project on Bhagirathi river in Uttarakhand.
Recently, Board of Directors of the company accorded investment approval for the Chatti-Bariatu coal mining project, having production capacity of 7 MTPA (million tonnes per annum) in Jharkhand at an appraised current estimated cost of Rs 1,314.57 crore.