EU regulators are looking to set a binding target to cut energy use by 30% by 2030.
The new goal has been set in a draft law which is expected to be approved by the EU Commission next month, according to reports.
The draft document also has new targets on cutting emissions, increasing renewable energy use and preventing waste in the next 14 years.
A previous preliminary agreement to cut energy use by at least 27% was made between the EU’s 28 member states in October 2014 but there has been pressure from MEPs and campaigners to increase it.
The EU’s current energy efficiency target is set at 20% by 2020 and it also has a 2030 target to cut emissions by 40%.