Dual-fuel households with average consumption in Bathurst, Orange, Dubbo and Parkes will typically experience a decrease in annual energy costs of $575 from July 2015, the St Vincent de Paul Society's updated report on energy prices shows.

The main reason for the price decreases were the repeal of the carbon tax and the lower regulated network charges, according to the report's key findings.

St Vincent de Paul Society NSW CEO Michael Perusco said the savings were encouraging for families but reported the demand for assistance with energy bills continued to grow.

"The St Vincent de Paul Society is pleased to see that families across the state will begin to see a decrease in their annual energy costs after years of rising costs," he said.

"Any measure by government or industry to reduce energy costs and make the energy landscape fairer is a positive one."

"The savings to be found will range from household to household but it is certainly encouraging to see that the average family will have a little extra cash to cover necessities.

"Despite these savings, the demand on Vinnies for assistance with energy bills continues to grow."

In the 2013/2014 year, the organisation provided about $4 million worth of Energy Accounts Payment Assistance vouchers, covering both energy and gas accounts, the CEO reported.

In addition, the society provided $820,000 in financial assistance to help people pay their utility bills, he said.

"Unfortunately, low income households are required to meet high housing and energy costs and at times cannot do both," he said.

"This can result in families entering into unaffordable payment plans, disconnection of services or eviction from their housing."

Mr Perusco continued a call for the establishment of a concession system for low income earners where concessions were provided as a percentage of a household's energy bill rather than the flat rate currently provided.

"We encourage everyone to shop around for energy providers so that they can make the greatest savings possible," he said.

"Every dollar saved can make a real difference to people experiencing disadvantage."

This week NSW industry, resources and energy minister Anthony Roberts welcomed the fall in prices shown in the St Vincent de Paul Society report.

"The NSW government's removal of retail price regulation from the electricity market is delivering real savings for customers," Mr Roberts said.

Customers can look into the best deal by visiting the Australian Energy Regulator's free and independent price comparison website - www.energymadeeasy.gov.au