Energy star is the start of the show:

“Buy ENERGY STAR® qualified products for your building, including:

Computers

Printers

Copiers

Televisions

Fans

Other appliances and equipment”

https://www.nationalgridus.com/Long-Island-NY-Business/Energy-Saving-Tips/Office-Engagement-and-Equipment-Tips?fbclid=IwAR3IP4AtH2avaRoKGWx5n72Z1daOKRHXsJ64Ef7z7Kz29VANmgchNPlnhGk