80 Plus does not set efficiency targets for very low load. For instance, generation of standby power may still be relatively inefficient, and may not meet requirements of the One Watt Initiative . Testing of 80 Plus power supplies shows that they vary considerably in standby efficiency. Some consume half a watt  or less in standby with no load, where others consume several times as much at standby,  even though they may meet higher 80 Plus certification requirement levels. Inefficiencies in generating standby power are magnified by the amount of time that computers spend turned off.