That's whyI like products like the "Kill-a-watt" and recording meters (dataloggers). They let you see exactly where you're using power.
Yes, there is a tremendous saving in using T-5 fluorescents rather than metal halide. There are also very real savings between T-8 and T-12 fluorescents. We're talking about being able to reduce a power bill from $100 to $60-70- and I'm not making any allowance for reduced maintenance or a lesser load on the air conditioning. Nor am I including the increased productivity that comes from having better-quality lighting.
The first step is to identify just where the power is being used. An office uses far more liighting than a machine shop, while the machine shop has more 'power quality' issues.
