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Cost of renewable energy subsidy on NI electricity bills 'could treble'

Electricity consumers in Northern Ireland could see a threefold rise in the amount they have to pay to subsidise renewable energy, an official report has warned.

A typical consumer bill currently includes £17.25 a year for renewables support.

The report by the Department of Enterprise says this could increase to more than £50 a year by 2020.

BBC News NI Economics and Business Editor Jon Campbell reports.