EU CoC Tier 2 Version 5 AC to DC External Power Supply Efficiency Standards

[Kiriakos GR]

Studies on European energy use of switching power supplies indicate that reducing off-load power consumption and improving product efficiency will save nearly 10TWh of power each year.

Code of Conduct (CoC) Tier 2 Version 5, originally set to get activated at 2018.
(efficiency specifications for low-voltage power adapters)

The quick explanation is that power supply with name plate of 1~49 Watt, they should now consume at no load condition  0.075 Watt.
Additionally a nameplate rating between 49 W and 250 W, they should now consume at no load condition  0.150 Watt.

Consumers might be unaware, of new changes, but PSU these made according new Efficiency Standards they are all ready at our home.
An good example this is PSU supplied by Vodafone with their ZTE ADSL router (year 2023).
RD1202000-C55-154OG Product webpage clearly inform that this is an 0.07 Watt product at no-load. 


Energy measurement professionals they have new challenges to deal with.
Their AC power meter / power analyzer, this it should have necessary sensitivity so this equipment to deliver measurements that you can trust down to 0.07 Watt / 75mW.
And in conclusion, several older AC power meter / power analyzer,  they will have to be retired and or replaced by new. 


EU also increased required steps of testing about power Efficiency, 10% this added too with expected power efficiency close to 80%.
CoC Tier 2 V5 = Testing steps at Loads of: 10% , 25%, 50%, 75%, 100%