The Taoiseach Micheál Martin says fuel and food rationing in Ireland is not an immediate concern.
However, he says the war in Ukraine could still destabilise supplies further.
He was speaking following a two-day informal European Union summit in France.
But he says rationing is not something that can be ruled out.
"I don't see at this stage, but this war could get worse and that has wider implications then.
"The main challenges at the moment are in the energy area, food and commodities.
"And that could affect our broader economic issue".
And he says the EU is indirectly funding the war in Ukraine, by continuing to buy Russian fuel.
"I mean there is concern with the energy dependency and the rise in fuels essentially, indirectly, Russia's being financed through EU spending on energy.
"And that's a challenge".
From here Mr Martin will travel to the UK meet the British Prime Minister Boris Johnson as part of his St Patrick's Day trip.
Micheál Martin is going to be watching Ireland - England tomorrow with Boris Johnson in a box in Twickenham.
“I’d say there will be a few elbows” he says. You can take the man out of Turner’s Cross… pic.twitter.com/akoKhfGeHb
— Seán Defoe (@SeanDefoe) March 11, 2022
The two leaders are expected to discuss Brexit, the war in Ukraine and the response of both countries to the refugee crisis it has created.