Bulgaria's BDZ Passengers, a unit of state-owned railways operator BDZ Holding, said on Monday that it has opened a 15.3 million levs ($8.8 million/7.8 million euro) tender for supply of electricity over a one-year period. Lot 1 envisages supply of an estimated 150,207 MWh of electricity, while Lot 2 provides for the supply of 11,170 MWh of medium and low voltage power, BDZ Passengers said in a tender notice. The deadline for submitting offers is February 25.Bids will be ranked solely based on price.