New research shows that the cost of domestic electricity and gas in Europe fluctuates wildly from state to state.
The study, carried out by think-tank VassaETT and the Austrian Energy Regulator, showed that energy prices varied by as much as 300 per cent.
The Household Electricity Price Index for Europe points out that residents in Copenhagen pay the most for their electricity at 30.88 (£27) per kilowatt hour.
People in Athens pay the least, according to the study, parting with just 11.43 per kilowatt hour.
For gas, customers in Stockholm were charged the most at 13.72 per kilowatt hour, compared with the cheapest place in Europe, London, where residents using gas pay 9.46 less.
The study also revealed that gas and electricity prices across Europe have fallen since January 2009.
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