Chief executive of the group Antoinette McKeown said the savings brought about for customers as a result of the five per cent drop next month will be "negligible".
The new rates are likely to amount to an annual saving of £26 for the average resident - a "disappointing" figure given the 40 per cent fall in wholesale costs over the past year.
Although any reduction was to be welcomed, Ms McKeown said homeowners will not begin to see any real benefits until the pricing system is reformed.
"The Consumer Council believes the system by which electricity is purchased and prices are determined is transparent but flawed - and costs consumers more money," she stated.
In the meantime, Ms McKeown advised residents to be "as energy efficient as possible" in order to save on energy bills.
People could also save money by comparing energy suppliers to find the cheapest rates.
If you want to find out more about how to compare energy suppliers and save up to £378 in minutes, click here.