Design, engineering, supply, erection, testing and commissioning of following work on turnkey basis & engineering, supply, erection, testing & commissioning of following transmission line on turnkey basis - 400/220/132/33 kv, 2 x 500 + 2x200 +2x80 mva grid sub-station including construction of control room building & approach road with other civil works at koderma, 400 kv d/c 3 ph qm patratu-koderma transmission line (150 km.), 400/220 kv, 2 x 500 mva grid sub-station including construction of control room building & approach road with other civil works at chandil , 400 kv d/c qm 3 phase chandil - dhanbad gss transmission line (133 km.), 400 kv d/c 3 ph qm patratu-chandil transmission line (135 km.)& 400 kv d/c qm 3 phase chandil-chaibasa (pgcil) transmission line (100 km.). , 220/132/33 kv, 2 x 200 + 2x50 mva grid sub-station at patratu ,, 220 kv d/c ptps link lines at patratu (20 km.), 220 kv d/c 3 ph koderma-giridih transmission line (80 km.) &, 220 kv d/c 3 phase 400/220 chandil gss - chandil transmission line (20 km.).