Homes could save over €450 a year on electricty bills if daylight saving is scrapped.
A professor at Queen's University in Belfast Aoife Foley said we are now in "an energy war" and not changing the clocks would dramatically reduce demand at peak times.
There's been multiple cases of politicians looking for daylight saving to be got rid of, with the EU voting in favour of ending the practice years ago.
The clocks will change on October 30th - moving one hour back.
Professor Foley said changing our patterns in the evening would reduce electricity demand by 10%.
She said, "By simply foregoing the winter Daylight Savings Time (DST) in October, we save energy because it is brighter in the evening during winter, so we reduce commercial and residential electrical demand as people leave work earlier, and go home earlier, meaning less lighting and heating is needed.
"We are no longer in an energy crisis in Europe but an energy war and dependent on weather conditions this winter it is very likely we may need to start rationing energy very seriously to avoid bigger energy issues in December and January when gas reserves start to run low.
"There is no doubt that by foregoing the daylight savings in winter we would save a lot of energy, reduce our bills and carbon emissions during this energy war, and especially during a cost of living crisis."
Since 1968, Ireland has put its clocks forward in the spring, and turned them back in the autumn.
