The colder weather could push electricity bills up 20% over the next three months.
So there's no better time to consider changing electricity providers.
Experts say we should shop around in order to save hundreds of dollars.
Apparently if you've been with the same company for a while you're probably paying too much as the best deals and discounts tend to be reserved for new customers.
Research has found the difference between the most expensive and the cheapest provider can be more than $1,000.
SA's average annual bills are the nation's highest at almost $3,000 and that's expected to go up as our heaters get a work out.