Bihar State Power Generation Company Limited · South Bihar Power Distribution Company Limited · North Bihar Power Distribution Company Limited · Pirpainti Bijlee Company Private Limited · Lakhisarai Bijlee Company Private Limited · Bihar State Power (Holding) Company Limited · Bihar State Road Development Corporation Limited · Bihar Rajya Pul Nirman Nigam Limited · Bihar Grid Company Limited · U31908 Dl2007 Ptc163008 · U31908 Dl2007 Ptc163006 · Bengal Birbhum Coalfields Limited · Bihar State Power Transmission Company Limited · Bihar State Hydro Electric Power Corporation Limited