Another Rs 91,353 crore will be spent for projects "under award/tender/planning", with a total capacity of 15,100 MW, according to the company's latest analysts and investors presentation.
Together, the capital expenditure would be Rs 1,38,522 crore for establishing 27,528 MW additional capacity.
Out of the total capex amount, Rs 96,965 would be funded through debt.
The upcoming projects include Mauda II, Vindhyachal IV and V (all have 1,000 MW capacity), 800 MW Kudgi, 1,320 MW Barh-I, 500 MW Rihand-III and 800 MW Koldam.
The utility has said that the major issues being faced by it include fuel linkages for new capacities, financial health of power distribution companies and acquisition of land for various projects.
For the April-June quarter, the company declared 2,320 MW of new commercial generation capacity.
NTPC said it will have a capex of Rs 12,751.13 crore this current fiscal.
NTPC aims to have an additional capacity of 14,038 MW in the current Five Year Plan (2012-17). And out of the projected total, 2,160 MW has already been commissioned till July 31.
By 2032, the company expects to have an installed capacity of 1,28,000 MW. Presently, the NTPC Group has a total installed capacity of 39,174 MW.
Meanwhile, eight northern States will discuss on Monday with Union Power Minister Veerapa Moily the issues they face in electricity transmission and distribution.
Moily had last week called a meeting of Chief Ministers of Punjab, Haryana, Uttar Pradesh, Uttarakhand, Himachal Pradesh, J&K, Rajasthan and Delhi.