RVNL emerges as L1 bidder for upgradation of electric traction system for Daund-Solapur rail section in Maharashtra November 7, 2025 | Awarded, Civil, Electrification, Project Updates Rail Vikas Nigam Limited (RVNL) has emerged as the lowest (L1) bidder for design, supply, erection, testing and commissioning of 220/132/55 kV traction substation…. This content is restricted.