80 Plus Bronze certified is the second level of 80 Plus ratings which describes how well a computer power supply unit (PSU) converts AC power to DC power. In order to qualify for 80 Plus Bronze certification, a 115V internal non-redundant computer PSU must have an efficiency level of 82% when tested at 100% load.
80 Plus is a voluntary certification program that launched in 2004 and has six levels of certifications. Energy Star added the 80 Plus requirement to their 4.0 computer specifications in 2006. Higher certifications include 80 Plus Silver, 80 Plus Gold, 80 Plus Platinum and 80 Plus Titanium, which was first achieved by Dell and Delta Electronics in 2012.