Contrary to some perceptions in the marketplace, the use of
electronic ballasts results in less harmonics generated based
on the power draw of the ballast and lamp combination. On a power
reduction from 81 watts for 2-34 watt T12 lamps to 59 watts for
2-32 watt T8 lamps, the result will be a reduction in harmonics.
In this case, the harmonics level will be 75% or less than the
original installation. When retrofitting from 4 lamps to 2, the
resultant harmonics is further reduced and may result in harmonics
being 30% or less than the original system.