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The DOE has announced new voluntary energy-saving specifications for lighting troffers – rectangular overhead fixtures used in commercial buildings – as well as parking lot and parking structure lighting. The new performance criteria were developed by the DOE's Commercial Building Energy Alliances (CBEAs), which bring together major U.S. companies from a wide range of sectors to identify and implement successful energy efficiency and cost-saving practices. Building operators can voluntarily adopt these specifications for new buildings or building upgrades to reduce their energy bills and carbon emissions.