Vic power bill complaints drop 47 per cent

Complaints to Victoria's Energy and Water Ombudsman have dropped 40 per cent as retailers fix their billing systems.

The Ombudsman had 50,437 cases in 2014-15 - down 40 per cent from the previous year - as complaints about high bills dropped 47 per cent.

"The overall 40 per cent fall in cases represents a major turnaround from 18 months ago, when we were dealing with thousands more billing cases," Ombudsman Cynthia Gebert said on Wednesday.