Wind-sector operators were previously exempt from the tax, which was set at 6.5% and only applied to companies with an annual turnover of over €25 million. Enel Green Power has estimated the new tax will cost it €25 million a year to 2013.
Simone Togni, chairman of the Italian wind industry association, Anev, said the tax would jeopardise €10 billion worth of investment over the next five years and hit a sector that is crucial for Italy’s development and competitiveness.
Italy’s energy watchdog said the measures would probably have a negative impact on consumers through reduced investments and higher bills.