Around 10% of househoulds connected to the grid do not receive regular bills.Theft is rampant.
A study in 2019 by pwc，an accountancy firm，estimated that distribution companies lose about a fifth of their revenue to theft，meter-tampering and leaks from faulty power lines.
pwc普华永道
PWC普华永道
estimated 估计估算估量
rampant 泛滥的猖獗的疯长的
tempering
meter-tampering 收费干扰器
Meter tampering means doing any act which causes the meter to run slower or not at all and is basically theft of electricity from the company that supplies power.