New Delhi: In what amounts to an investment commitment of over Rs 7,000 crore under the Jawahar Lal Nehru National Solar Mission (JNNSM), NTPC Vidyut Vyapar Nigam (NVVN) has selected a total of seven bidders, including RPower, to build 479 mw power generation capacity, based on concentrated solar power (CSP) in the first phase of the scheme.