Heating will be turned off in lobbies and corridors and limited to floors on which people are actually working.
Thermostats in public buildings could be set to a maximum of 19 degrees this winter.
Turning down the heat in the likes of civil service offices is one of the measures being considered to tackle the energy crisis.
The three coalition party leaders meet later to sign off on plans to help alleviate possible energy shortages this winter.
It's understood the memo being discussed by Michael Martin, Leo Varadkar and Eamon Ryan today, contains proposals similar to those recently unveiled in France and Germany.
If agreed, it would see office temperatures set at a maximum of 19 degrees with heating turned off in lobbies and corridors and limited only to floors on which people are actually working.
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