Why are the State Electricity Boards (SEBs), which distribute electricity, incurring losses?

Due to transmission and distribution losses

State Electricity Boards (SEBs), which distribute electricity, incur losses exceeding `20,000 crores'. This is due to transmission and distribution losses, wrong pricing of electricity and other inefficiencies. Some scholars also say that the distribution of electricity to farmers is the main reason for the losses; electricity is also stolen in different areas which also adds to the woes of SEBs.