ISTANBUL Türkiye's energy future could be fundamentally transformed through stronger efficiency measures — if existing policies are strengthened and expanded, domestic sources could supply 90 percent of energy by 2053, yielding a cumulative economic benefit of $2.1 trillion, a new report says. According to the "Türkiye Energy Efficiency Outlook 2025" report prepared by Sabancı University's Istanbul International Center for Energy and Climate ( IICEC ), the "Efficient Growth Scenario" is based