Minister for Communications, Energy and Natural Resources, Eamon Ryan warned government departments and agencies that they will have to work to meet the target set earlier this week.
He said: “It behoves all state agencies, the regulator, the sustainable energy office and other departments to row in on a co-ordinated approach to meet those targets.”
Environment Minister John Gormley announced the target, which was raised from 30%, as part of his carbon budget.
He also revealed that carbon emissions had dropped by 1% in 2006 compared to 2007.
Europe has agreed for 20% of electricity to be generated by renewable means.