Gavin Dufty, unit manager social policy of St. Vincent de Paul, said the report made clear how the deregulation of the energy market had caused considerable price differences for the same essential service.
"There are encouraging signs of the energy bill for households in Queensland," Mr. Dufty said.
"After a few years of considerable price increases, electricity prices fall and the gas price has not changed.
"But do not be fooled, these prizes are not returned to you magically.
"In order to collect the savings, households will have put pressure on their energy company or are actively looking around.
"People who have not shopped, or have called their retailer to renew their energy deals, are paying hundreds of dollars more than they need."
About 20 percent of households in southeastern Queensland, according to the report, make the worst deals.
Rate 11 customers pay the same price for each unit of electricity used, regardless of the time of day, plus a daily supply tax. Because the retail tariffs are no longer regulated, the delivery burden varies between retailers.
The rate tracking report of St Vincent de Paul revealed that Q Energy, Mojo, Energy Locals, Dodo and Red Energy applied higher delivery costs to their outstanding offers.
Since January, energy prices have declined due to a fall in wholesale costs and unprecedented pressure from national and federal governments on energy companies to offer consumers a better deal.
For customers with the & # 39; time of use & # 39; rate (rate 12), the annual bill has dropped by $ 60 (or 2%) since July 2016.
This rate has higher operating costs during peak hours, such as weekdays in the summer months, with lower costs for the rest of the time plus a daily supply tax.
Queensland households with an installed 3kW solar system paid an average of $ 1420 per year, while households with a smaller 1.5kW system paid $ 1835 per year.
Compared to last year, the average market supply for solar customers with 3 kW systems dropped by $ 160 or about 10%.
Mr. Dufty also warned Queensland customers to pay attention to the pitfalls of some deals.
"If you regularly pay late, you can not only lose your discount on timely payments, but also be hijacked by late fees, which cost you hundreds of dollars a year," Dufty said.
"Solar households have also seen a decrease in their annual costs, and we are looking for this downward price trend to continue if the federal government implements the recommendations from the ACCC report."
Customers who are considering switching can compare energy plans with the Australian Government's Energy Made Easy website.