Eighty per cent of electricity costs in the Italian Alps are supplied by fossil fuels, according to an analysis by the European Commission.
The report, published on Tuesday, is the first from the commission, which monitors energy consumption in the region.
The main source of electricity is coal, followed by gas, renewable energy and hydroelectric power, but the majority of energy consumption is generated by renewable sources.
The study shows that the region is using an average of 730 gigawatts of electricity per year, which is 10 times less than the national average.
It says electricity costs are rising in the area, due to the large number of people living there, and to the recent economic downturn, which led to a drop in the cost of heating.
A recent report from the US National Oceanic and Atmospheric Administration (NOAA) found that the Alpine region has the world’s highest electric demand and most expensive electricity costs, with the average electric bill in Italy running up to 2,000 euros ($2,750) a year.
The region’s demand for electricity is a key issue for Prime Minister Matteo Renzi, who wants to boost renewable energy in the country.
Renzi has said the region will require a major increase in renewable energy, which could include solar and wind energy.
The EU commission has said it has received complaints from residents about rising electricity bills, and wants to make it easier to reduce electricity bills in Italy.