ar Mission. Inn's flagship solar pcocy program The counterpart,/ to the PPA is NTPC Vicett Vyanr Ngam Limited, or 'NVVN,' a wholly owned ntedary of NTPC Lented, wrath Is tre largest stale-owned energy producer in India with 41 GW of power plants located Woughout Inn NVVN has a long-term credit ratirg of AAy