Victorian households on the worst electricity deals in the market are paying almost $1000 more each year for the same amount of power as those on the best offers, new research shows.

Geography also has a major impact on the cost of energy for Victorians, with many of the most expensive offers applying in some of the poorest regions of the state.

St Vincent De Paul's Tariff Tracker report found households can save as much as $2675 a year by switching on energy deals. Credit:Michele Mossop

Analysis by the St Vincent De Paul Society released today reveals that households in towns including the Latrobe Valley and Sale in Gippsland, and Seymour, Wangaratta and Wodonga in the state’s central north, face some of the highest-cost energy offers in Victoria.

Meanwhile, households in a cluster of wealthy suburbs in Melbourne’s inner south-east, including Toorak, Armadale, South Yarra, Prahran and Caulfield, can pay the cheapest average rates for energy.