Blending physics, and metaphor, with this age old adage (I can’t resist throwing in some physics), power implies transformation. It is a function of using energy to do work. My point is that energy monitors aren’t worth squat unless we change our behavior based on what they tell us. In fact, since you plug them in, they use electricity, they don’t save it.
Local utilities are offering energy data with things like the green button which we’ve written about in the past. Changing light bulbs to CFLs or LEDs can make a big impact with electric loads. When you use electricity—for A/C or to heat water for example—more efficient systems can make a difference; and so can improving the home in other ways. The gains in insulating and air sealing, proper shading, and good windows can really make an impact on your energy usage as well as your comfort.
I wonder if the adage “A little knowledge is a dangerous thing” is relevant? Don’t get me wrong, it’s good to keep an eye on your electrical usage, but don’t get caught watching and not acting. Or maybe, “a fool and his money will soon part” fits too.