The Dáil will this morning debate a motion calling for a moratorium on new data centres in Ireland.
They currently use about 10 per cent of the country's electricity output.
And it's claimed that could rise to 70 per cent by 2030, if all planning permissions for new centres go ahead.
The Social Democrats is bringing forward today's motion - and its co-leader, Roisin Shortall, says no more data centres should be allowed.
"There has been a proliferation of data centres.
"There's now about 70 of them nationally, and 54 of them are in Dublin - that makes Dublin the largest data centre hub in Europe, incredibly.
"What's happened as a result of this is that our electricity supply, which is already very insecure, is going to be threatened even further.